Religion, Creationism, evolution, science and politics from a centre-left atheist humanist. The blog religious frauds tell lies about.
Sunday, 4 January 2026
Refuting Creationism - Now It's Evidence of Bipedalism in a Hominin From 7 Million Years Ago
Anthropologists Offer New Evidence of Bipedalism in Long-Debated Fossil Discovery
We are only three days into 2026 and already creationism is facing an avalanche of new evidence against it and in favour of evolution on an ancient Earth in a vastly older Universe — directly contradicting the Bronze Age origin myths that creationists cling to with the desperation of a drunk clutching a lamppost.
The latest blow comes from the New York University Department of Anthropology, where a team of researchers led by Associate Professor Scott Williams, working with colleagues from the University of Washington, Chaffey College, and the University of Chicago, have carried out a detailed re-examination of fossil remains attributed to Sahelanthropus tchadensis. Their analysis provides strong evidence that this species was bipedal and shared several key skeletal characteristics with later bipedal hominins, including the australopithecines and members of the genus Homo.
Sahelanthropus tchadensis was discovered in the early 2000s, and its place in human evolution has been debated ever since. Some researchers argued it might represent an extinct ape rather than a stem hominin. Evidence for habitual bipedalism, however, strongly favours the latter interpretation, making S. tchadensis the earliest known human ancestor currently identified in the fossil record.
As such, it becomes yet another example of the transitional species that creationists continue to insist do not exist, often under the mistaken belief that Charles Darwin — whom they treat as the final authority on all matters evolutionary — admitted that the absence of transitional forms was a serious problem for his theory. In reality, Darwin explicitly predicted that such fossils would eventually be found, and the subsequent century and a half of palaeontology has repeatedly confirmed that prediction.
The discovery is of a point of attachment on the femur of a ligament only found in bipedal hominins. The importance of bipedalism in human evolution cannot be overstated. Habitual upright walking is one of the defining characteristics that separates hominins from other apes, reflecting a fundamental shift in anatomy, locomotion, and behaviour. It requires extensive reorganisation of the skeleton, including changes to the position of the foramen magnum, the curvature of the spine, the shape of the pelvis, the proportions of the limbs, and the structure of the feet. Because these adaptations are complex, interdependent, and leave clear signatures in fossilised bones, bipedalism is not a trivial or ambiguous trait. Evidence for it in Sahelanthropus tchadensis therefore places this species firmly on the human lineage and pushes the origin of upright walking — and with it the human evolutionary trajectory — back far earlier than creationist models allow.
Scott Williams’ team have now published their findings, open access, in Science Advances.
Thursday, 1 January 2026
Creationism Refuted - A Terrible End to a Bad Year for Creationism - a 37-Million-Year-Old Transitional Fossil Snake
2026 is shaping up to be yet another dreadful year for the creationist cult, as palaeontology, archaeology, geochronology, and genetics continue to uncover facts that do not merely show creationism to be a divinely inspired allegory or metaphor, but demonstrate that it is simply and unequivocally wrong at every level.
At times it seems like an unfair contest between myths invented by Bronze Age pastoralists—without the slightest benefit of scientific understanding—and the cumulative output of modern science. It is rather like a chess match between a pigeon and a powerful computer, in which the pigeon’s concept of chess is to knock the pieces over, then strut about on the board declaring victory. This tactic is known in creationist circles as “debate”, and everywhere else as “pigeon chess”.
As usual, the closing months of the year have brought yet more palaeontological evidence that creationism cannot accommodate. This latest find dates to around 37 million years before creationists believe Earth was magicked into existence, bears the unmistakable fingerprints of one of those supposedly “non-existent” transitional forms, and displays the familiar mosaic of archaic and modern features that are commonplace in the fossil record. It also fits precisely into the established timeline of reptilian evolution and was discovered in southern England, in deposits that align exactly with the known geological and climatological history of the region.
The fossil was discovered in 1981 at Hordle Cliff, England, and donated to the Natural History Museum in London, where it has now been identified as a new species. The identification was made by Professor Georgios L. Georgalis of the Institute of Systematics and Evolution of Animals at the Polish Academy of Sciences in Kraków, currently a visiting researcher at the Natural History Museum. His paper, co-authored with Dr Marc E. H. Jones, curator of fossil reptiles and amphibians, has recently been published open access in Comptes Rendus Palevol.
Hordle Cliff, Geology. Hordle Cliff is one of the most important and intensively studied fossil-bearing coastal exposures in southern England. Its significance lies in the exceptional sequence of Eocene marine sediments exposed by continual coastal erosion along the western Solent.The discovery and its broader significance were explained in a recent Natural History Museum news item by James Ashworth.
Geological setting
Hordle Cliff lies on the coast of Hampshire, west of Milford-on-Sea, forming part of the Hampshire Basin, a large sedimentary basin that accumulated marine and marginal-marine deposits during the early Cenozoic. The strata exposed here date mainly to the Late Eocene, approximately 41–34 million years ago, a time when southern England lay beneath a warm, shallow sea.
Stratigraphy
The cliff exposes a classic succession of Eocene formations, including:
- Barton Group (upper Eocene)
- Dominated by clays, silts, and fine sands
- Deposited in shallow marine conditions
- Exceptionally fossil-rich
- Barton Clay Formation
- The most famous unit at Hordle Cliff
- Known for abundant molluscs, sharks’ teeth, rays, fish remains, turtles, crocodilians, birds, and reptiles (including snakes)
- Indicates warm, subtropical seas with nearby coastal and estuarine environments
These sediments accumulated gradually, layer upon layer, in calm marine settings—exactly the opposite of the chaotic, high-energy deposition required by flood-geology models.
Depositional environment
During the Late Eocene, this region experienced:
- **Warm greenhouse climates
- High sea levels
- Low-energy marine sedimentation
Fine-grained clays settled slowly out of suspension, allowing delicate fossils to be preserved intact. Many beds show bioturbation, shell beds, and orderly fossil assemblages—clear evidence of stable ecosystems persisting over long periods.
Fossil significance
Hordle Cliff is internationally important because it preserves:
- Highly diverse faunas spanning multiple ecological niches
- Mosaic evolutionary forms, including transitional reptiles
- Fossils preserved in situ, not reworked or mixed from different ages
This makes the site particularly valuable for reconstructing Eocene ecosystems and tracing evolutionary change through time.
Structural and erosional features
The cliffs themselves are relatively soft and unstable:
- Frequent slumping and landslips continually expose fresh material
- Ongoing erosion has made Hordle Cliff productive for over two centuries
- The geology is simple and undisturbed, with gently dipping strata—no folding, overturning, or tectonic chaos
Why this matters for creationist claims
The geology of Hordle Cliff presents multiple, independent problems for young-Earth creationism:
- The sediments record millions of years of gradual deposition
- Fossils are ordered, local, and ecological, not globally mixed
- Climatic signals match global Eocene warming trends
- The strata fit seamlessly into the wider regional and global geological record
There is no evidence whatsoever of rapid, catastrophic deposition, let alone a single global flood. Instead, Hordle Cliff is a textbook example of slow geological processes operating exactly as modern geology predicts.
“Weird” new species of ancient fossil snake discovered in southern England
An extinct snake has slithered its way out of obscurity over four decades after its discovery.
The newly described species of reptile, Paradoxophidion richardoweni, is offering new clues in the search for the origin of ‘advanced’ snakes.
In 1981, the backbones of an ancient snake were uncovered at Hordle Cliff on England’s south coast. They’ve now been revealed as the remnants of a previously unknown species.
Research published in the journal Comptes Rendus Palevol has identified that the vertebrae belong to a new species named Paradoxophidion richardoweni. This animal would have lived around 37 million years ago, when England was home to a much wider range of snakes than it is now.
While little is known about this animal’s life, it could shed light on the early evolution of biggest group of modern snakes. This is because Paradoxophidion represents an early-branching member of the caenophidians, the group containing the vast majority of living snakes.
The new species is so early in the evolution of the caenophidians that it has a peculiar mix of characteristics now found in different snakes throughout this group. This mosaic of features is summed up in its genus name, with Paradoxophidion meaning ‘paradox snake’ in Greek.
Its species name, meanwhile, honours Sir Richard Owen. Not only did he name the first fossil snakes found at Hordle Cliff, but this scientist was also instrumental in establishing what’s now the Natural History Museum where the fossils are cared for, giving the name multiple layers of meaning.
Lead author Dr Georgios Georgalis, from the Institute of Systematics and Evolution of Animals of the Polish Academy of Sciences in Krakow, says that being able to describe a new species from our collections was ‘a dream come true’.
It was my childhood dream to be able to visit the Natural History Museum, let alone do research there, so, when I saw these very weird vertebrae in the collection and knew that they were something new, it was a fantastic feeling. It’s especially exciting to have described an early diverging caenophidian snake, as there’s not that much evidence about how they emerged. Paradoxophidion brings us closer to understanding how this happened.
Dr Georgios Georgalis, lead author
Institute of Systematics and Evolution of Animals
Polish Academy of Sciences
Krakow, Poland.
The most commonly found bones of fossil snakes are their vertebrae, which contain traits that scientists can use to identify the species.© Georgalis and Jones.
What’s been discovered at Hordle Cliff?
Hordle Cliff, near Christchurch on England’s south coast, provides a window into a period of Earth’s history known as the Eocene that lasted from around 56 to 34 million years ago.
Dr Marc Jones, our curator of fossil reptiles and amphibians who co-authored the research, says that this epoch saw dramatic climatic changes around the world.
Around 37 million years ago, England was much warmer than it is now, though the Sun was very slightly dimmer, levels of atmospheric carbon dioxide were much higher. England was also slightly closer to the equator, meaning that it received more heat from the Sun year round.
Dr Marc E.H. Jones, co-author
Curator of fossil reptiles and amphibians.
Natural History Museum
London, UK.
Fossils were first uncovered at Hordle Cliff around 200 years ago. In the early 1800s Barbara Rawdon-Hastings, the fossil-hunting Marchioness of Hastings, collected the skulls of crocodile relatives from the site, one of which Richard Owen would later name after her.
Since then, a variety of fossil turtles, lizards and mammals have also been uncovered at Hordle Cliff. There are also abundant snake fossils, including some particularly important species.
The fossil snakes found at Hordle Cliff were some of the first to be recognised when Richard Owen studied them in the mid-nineteenth century. They include Paleryx, the first named constrictor snake in the fossil record. Smaller snakes from this site, however, haven’t been as well investigated. Paradoxophidion’s vertebrae are just a few millimetres long, so historically they’ve not had a lot of attention.
Dr Georgios Georgalis.
To get a better look at these fossils, Marc and Georgios took CT scans of the bones. In total, they identified 31 vertebrae from different parts of the spine of Paradoxophidion.
We used these CT scans to make three dimensional models of the fossils. These provide a digital record of the specimen which we’ve shared online so that they can be studied by anyone, not just people who can come to the museum and use our microscopes.
Dr Marc E.H. Jones.
The scans show that the fossils are all slightly different shapes and sizes, as the snake’s spine bones gradually taper from head to tail. However, they share some features that show they all belong to one species.
Georgios estimates that Paradoxophidion would have been less than a metre long, but other details about this animal’s life are hard to say. The lack of a skull makes it difficult to know what it ate, while the vertebrae don’t have any sign of being adapted for a specialised lifestyle, such as burrowing.
A living link to the past?
Though the vertebrae don’t give much away about Paradoxophidion’s lifestyle, they are strikingly similar to a group of snakes known as the Acrochordids. These reptiles are known as elephant trunk snakes due to their unusually baggy skin.
Today, only a few species of these snakes can be found living in southeast Asia and northern Australia. But they’re among the earliest branches of the caenophidian family tree, with a fossil record extending back over 20 million years.
As Paradoxophidion is really similar to the acrochordids, it’s possible that this snake could be the oldest known member of this family. If it was, then it could mean that it was an aquatic species, as all Acrochordids are aquatic. On the other hand, it might belong to a completely different group of caenophidians. There’s just not enough evidence at the moment to prove how this snake might have lived, or which family it belongs to.
Dr Georgios Georgalis.
Finding out more about Paradoxophidion and the early evolution of the caenophidians means that more fossils will need to be studied. Georgios hopes to continue his work in our fossil reptile collections in the near future, where he believes more new species might be waiting.I’m planning to study a variety of snake fossils in the collection, including those originally studied by Richard Owen. These include the remains of the giant aquatic snake Palaeophis, which were first found in England in the nineteenth century. There are also several bones with differing morphology that haven’t been investigated before that I’m interested in looking at. These might represent new taxa and offer additional clues about snake evolution.
Dr Georgios Georgalis.
Publication:
A novel caenophidian serpent (Serpentes) peculiar to early divergence from the late Eocene of Hordle Cliff, EnglandTaken together, the geology of Hordle Cliff leaves no room for creationist evasions. The sediments accumulated slowly in warm, shallow Eocene seas, preserving stable marine ecosystems over millions of years. The fossils are local, ordered, and ecologically coherent, embedded within undisturbed strata that fit seamlessly into the wider geological history of southern England and the global Eocene record. None of this resembles the chaotic aftermath of a recent global catastrophe; all of it is exactly what conventional geology predicts.
We describe here a new genus and species of snake, based on several trunk and caudal vertebrae, from the late Eocene (MP 17a) of Hordle Cliff, England. We studied the fossil material using both visual microscopy and computed tomography (μCT), focusing on its intracolumnar variation and comparing it extensively with other Paleogene snake taxa from England and continental Europe. The new small taxon is characterized by a set of bizarre and distinctive vertebral features that may differentiate it from all other snakes. Its morphology is somewhat similar to that of russellophiids; however, some of its anatomical features are radically different from those seen in the latter group and thus defy such placement at the family level. Furthermore, the new English taxon bears a striking resemblance to extant acrochordids, particularly the species Acrochordus granulatus (Schneider, 1799). Consequently, we consider the new taxon to most likely represent an early divergent caenophid, possibly even a member of the Acrochordidae Bonaparte, 1831, well outside the stratigraphic and geographic distribution known to date for the latter group. It further adds to the astonishing diversity of vertebral morphologies in European Paleogene snakes.
Appendix 1. — Flythrough video of the μCT of the holotype trunk vertebra NHMUK PV R 10795.
Appendix 2. — Flythrough video of the μCT of the caudal vertebra NHMUK PV R 10796.
Georgalis G.L. & Jines M.E.H. (2025).
A new peculiar early diverging caenophidian snake (Serpentes) from the late Eocene of Hordle Cliff, England, in Georgalis G.L., Zaher H. & Laurin M. (eds) Snakes from the Cenozoic of Europe – towards a macroevolutionary and palaeobiogeographic synthesis.
Comptes Rendus Palevol 24 (25): 505-530. https://doi.org/10.5852/cr-palevol2025v24a25
Copyright: © 2025 The authors.
Published by [publisher]. Open access.
Reprinted under a Creative Commons Attribution 4.0 International license (CC BY 4.0)
The newly identified fossil from this site simply adds to the embarrassment. It is neither out of place nor out of time, but sits precisely where evolutionary theory says it should—both stratigraphically and anatomically—displaying the familiar mosaic of ancestral and derived features that creationists insist do not exist. Hordle Cliff has been yielding such transitional forms for over two centuries, and every one of them tells the same story.
For creationism, this presents a recurring and insoluble problem. Each new discovery must be dismissed, distorted, or ignored, not because it is anomalous, but because it fits too well. Hordle Cliff is not an exception to the rule; it is the rule itself—one more quietly devastating reminder that the natural world records its own history with remarkable consistency, and that history bears no resemblance whatsoever to a Bronze Age flood myth.
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Saturday, 27 December 2025
Creationism Refuted - A Rich Collection of Dinosaur Fossils from 72 Million Years Before 'Creation Week'
Paleontoligists have discovered an exceptionally rich dinosaur site in Transylvania.
Normally, creationists seize on any concentration of animal fossils that can be attributed to flooding as supposed “evidence” for their favourite Bronze Age myth of a global genocide. On that basis, they should be delighted by recent news from Romania describing a rich deposit of dinosaur fossils that appears to have accumulated as a result of flooding in the Hațeg Basin.
There is, however, a serious snag. These fossils occur in deposits dated to around 72 million years ago — tens of millions of years before creationists believe the Earth even existed — and the evidence points clearly to repeated local flooding events, not a single global catastrophe.
The discovery of the fossil site is reported in the journal PLOS ONE by the Valiora Dinosaur Research Group, a collaboration of Hungarian and Romanian palaeontologists co-led by Gábor Botfalvai and Zoltán Csiki-Sava of the Institute of Geography and Earth Sciences, Department of Palaeontology, ELTE Eötvös Loránd University, Budapest, Hungary.
Saturday, 20 December 2025
Creationism Refuted - A Massive Evolutionary Arms Race 130 Million Years Before 'Creation Week'
Two researchers at McGill University, Montréal, Québec, Canada, have uncovered evidence of an ecosystem teeming with giant marine predators some 130 million years ago. The largest of these predators could, quite literally, have eaten something the size of a modern orca as little more than a snack. This will make depressing reading for creationists, not only because it all happened deep in the long pre-“Creation Week” history of life on Earth, but because the evolutionary arms races that led to these giants are precisely what the theory of evolution by natural selection predicts.
The two researchers, Dirley Cortés and Professor Hans C. E. Larsson, have just published their findings, open access, in the Zoological Journal of the Linnean Society.
It doesn’t get any easier for creationists. Just because it’s Christmas week doesn’t mean the awkward facts are going to go away, or that scientists are going to stop uncovering more of them. No matter what they post on social media; no matter how loudly they shout; or how fervently they gather on Sundays to collectively drown out their doubts, Santa is not going to deliver evidence that the Bronze Age creation myths in the Bible contain even a grain of historical truth. The problem is that truth remains true whether a creationist believes it or not, and regardless of whether their parents believed it. No amount of looking the other way or pretending the facts aren’t there will ever change that.
The palaeontologists reached their conclusions by reconstructing an ecosystem network for all known animal fossils from the Paja Formation in central Colombia. They used body sizes, feeding adaptations, and comparisons with modern animals, and then validated the results against one of the most detailed present-day marine ecosystem networks available: the living Caribbean ecosystem, which they used as a reference. The Paja ecosystem thrived with plesiosaurs, ichthyosaurs, and abundant invertebrates, giving rise to one of the most intricate marine food webs known. This complexity emerged as sea levels rose and Earth’s climate warmed during the Mesozoic era, including the Cretaceous, triggering an explosion of marine biodiversity.
Thursday, 18 December 2025
Creationism Refuted - Transitional Evolution of Homo Erectus
Scans provided by National Museum of Ethiopia,
National Museums of Kenya and Georgian National Museum.
Palaeontologists at the College of Graduate Studies, Glendale Campus of Midwestern University in Arizona, have reconstructed the head and face of an early Homo erectus specimen, DAN5, from Gona in the Afar region of Ethiopia on the Horn of Africa. In doing so, they have uncovered several unexpected features that should trouble any creationist who understands their significance. The research has just been published open access in Nature Communications.
Creationism requires its adherents to imagine that there are no intermediate fossils showing a transition from the common Homo/Pan ancestor to modern Homo sapiens, whom they claim were created as a single couple just a few thousand years ago with a flawless genome designed by an omniscient, omnipotent creator. The descendants of such a couple would, of course, show no genetic variation, because both the perfect genome and its replication machinery would operate flawlessly. No gene variants could ever arise.
The reality, however, is very different. Not only are there vast numbers of fossils documenting a continuum from the common Homo/Pan ancestor of around six million years ago, but there is also so much variation among them that it has become increasingly difficult to force them into a simple, linear sequence. Instead, human evolution is beginning to resemble a tangled bush rather than a neat progression.
The newly reconstructed face of the Ethiopian Homo erectus is no exception. It displays a mosaic of more primitive facial traits alongside features characteristic of the H. erectus populations believed to have spread out of Africa in the first of several waves of hominin migration into Eurasia. The most plausible explanation is that the Ethiopian population descended from an earlier expansion within Africa, became isolated in the Afar region, and retained its primitive characteristics while other populations continued to evolve towards the more derived Eurasian form.
The broader picture that has emerged in recent years—particularly since it became clear that H. sapiens, Neanderthals, and Denisovans formed an interbreeding complex that contributed to modern non-African humans—is one of repeated expansion into new environments, evolution in isolation, and subsequent genetic remixing as populations came back into contact. DAN5 represents just one of these populations, which appears to have evolved in isolation for some 300,000 years.
Not only is this timescale utterly incompatible with the idea of the special creation of H. sapiens 6,000–10,000 years ago, but the sheer existence of this degree of variation is also irreconcilable with the notion of a flawless, designed human genome. Even allowing for old-earth creationist claims that a biblical “day” may represent an elastic number of millions of years, the problem remains: a highly variable genome must still be explained as the product of perfect design. A flawless genome created by an omniscient, omnipotent creator should, moreover, have been robust enough to withstand interference following “the Fall” — an event such a creator would necessarily have foreseen, particularly if it also created the conditions for that fall and the other creative agency involved (Isaiah 45:7).
As usual, creationists seem to prefer the conclusion that their supposed intelligent creator was incompetent—either unaware of the future, indifferent to it, or powerless to prevent it—rather than accept the far more parsimonious explanation: that modern Homo sapiens are the product of a long, complex evolutionary history from more primitive beginnings, in which no divine intervention is required.
Origins of Homo erectus Homo erectus appears in the fossil record around 1.9–2.0 million years ago, emerging from earlier African Homo populations, most likely derived from Homo habilis–like ancestors. Many researchers distinguish early African forms as Homo ergaster, reserving H. erectus sensu stricto for later Asian populations, although this is a taxonomic preference rather than a settled fact.The work of the Midwestern University researchers is summarised in a press release published by EurekAlert!
Key features of early H. erectus include:
- A substantial increase in brain size (typically 600–900 cm³ initially, later exceeding 1,000 cm³)
- A long, low cranial vault with pronounced brow ridges
- A modern human–like body plan, with long legs and shorter arms
- Clear association with Acheulean stone tools and likely habitual fire use (by ~1 million years ago)
Crucially, H. erectus was the first hominin to disperse widely beyond Africa, reaching:
- The Caucasus (Dmanisi) by ~1.8 Ma
- Southeast Asia (Java) by ~1.6 Ma
- China (Zhoukoudian) by ~0.8–0.7 Ma
This makes H. erectus not a single, static species, but a long-lived, geographically structured lineage.
Homo erectus as a population complex
Rather than a uniform species, H. erectus is best understood as a metapopulation:
- African populations
- Western Eurasian populations
- East and Southeast Asian populations
These groups experienced repeated range expansions, isolation, local adaptation, and partial gene flow, producing the mosaic anatomy seen in fossils such as DAN5.
This population structure is critical for understanding later human evolution.
Relationship to later Homo species From H. erectus to H. heidelbergensis
By around 700–600 thousand years ago, some H. erectus-derived populations—probably in Africa—had evolved into forms often grouped as Homo heidelbergensis (or H. rhodesiensis for African material).
These hominins had:
- Larger brains (1,100–1,300 cm³)
- Reduced facial prognathism
- Continued Acheulean and early Middle Stone Age technologies
They represent a transitional grade, not a sharp speciation event.
Divergence of Neanderthals, Denisovans, and modern humans
Genetic and fossil evidence indicates the following broad pattern:
- ~550–600 ka: A heidelbergensis-like population splits
- African branch → modern Homo sapiens
- Eurasian branch → Neanderthals and Denisovans
Neanderthals
- Evolved primarily in western Eurasia
- Adapted to cold climates
- Distinctive cranial morphology
- Contributed ~1–2% of DNA to all non-African modern humans
Denisovans
- Known mostly from genetic data, with sparse fossils (Denisova Cave)
- Closely related to Neanderthals but genetically distinct
- Contributed genes to Melanesians, Aboriginal Australians, and parts of East and Southeast Asia, including variants affecting altitude adaptation (e.g. EPAS1)
Modern Homo sapiens
- Emerged in Africa by ~300 ka
- Retained genetic continuity with earlier African populations
- Dispersed out of Africa multiple times, beginning ~70–60 ka
- Interbred repeatedly with Neanderthals and Denisovans
The key point: no clean branching tree
Human evolution is reticulate, not linear:
- Species boundaries were porous
- Gene flow occurred repeatedly
- Populations diverged, adapted, re-merged, and diverged again
Homo erectus is not a side branch that “went extinct”, but a foundational grade from which multiple later lineages emerged. DAN5 fits neatly into this framework: a locally isolated erectus population retaining ancestral traits while others continued evolving elsewhere.
Why this matters
This picture:
- Explains mosaic anatomy in fossils
- Accounts for genetic admixture in living humans
- Makes sense of long timescales and geographic diversity
- Is incompatible with any model of recent, perfect, single-pair creation
Instead, it shows that our species is the outcome of millions of years of population dynamics, not a single moment of design.
A new fossil face sheds light on early migrations of ancient human ancestor
A New Fossil Face Sheds Light on Early Migrations of Ancient Human Ancestor
A 1.5-million-year-old fossil from Gona, Ethiopia reveals new details about the first hominin species to disperse from Africa. Summary: Virtual reassembly of teeth and fossil bone fragments reveals a beautifully preserved face of a 1.5-million-year-old human ancestor—the first complete Early Pleistocene hominin cranium from the Horn of Africa. This fossil, from Gona, Ethiopia, hints at a surprisingly archaic face in the earliest human ancestors to migrate out of Africa.
A team of international scientists, led by Dr. Karen Baab, a paleoanthropologist at the College of Graduate Studies, Glendale Campus of Midwestern University in Arizona, produced a virtual reconstruction of the face of early Homo erectus. The 1.5 to 1.6 million-year-old fossil, called DAN5, was found at the site of Gona, in the Afar region of Ethiopia. This surprisingly archaic face yields new insights into the first species to spread across Africa and Eurasia. The team’s findings are being published in Nature Communications.
We already knew that the DAN5 fossil had a small brain, but this new reconstruction shows that the face is also more primitive than classic African Homo erectus of the same antiquity. One explanation is that the Gona population retained the anatomy of the population that originally migrated out of Africa approximately 300,000 years earlier.
Dr. Karen L. Baab, lead author
Department of Anatomy
Midwestern University
Glendale, AZ, USA.
Gona, Ethiopia
The Gona Paleoanthropological Research Project in the Afar of Ethiopia is co-directed by Dr. Sileshi Semaw (Centro Nacional de Investigación sobre la Evolución Humana, Spain) and Dr. Michael Rogers (Southern Connecticut State University). Gona has yielded hominin fossils that are older than 6.3 million years ago, and stone tools spanning the last 2.6 million years of human evolution. The newly presented hominin reconstruction includes a fossil brain case (previously described in 2020) and smaller fragments of the face belonging to a single individual called DAN5 dated to between 1.6 and 1.5 million years ago. The face fragments (and teeth) have now been reassembled using virtual techniques to generate the most complete skull of a fossil human from the Horn of Africa in this time period. The DAN5 fossil is assigned to Homo erectus, a long-lived species found throughout Africa, Asia, and Europe after approximately 1.8 million years ago.
How did the scientists reconstruct the DAN5 fossil?
The researchers used high-resolution micro-CT scans of the four major fragments of the face, which were recovered during the 2000 fieldwork at Gona. 3D models of the fragments were generated from the CT scans. The face fragments were then re-pieced together on a computer screen, and the teeth were fit into the upper jaw where possible. The final step was “attaching” the face to the braincase to produce a mostly complete cranium. This reconstruction took about a year and went through several iterations before arriving at the final version.
Dr. Baab, who was responsible for the reconstruction, described this as “a very complicated 3D puzzle, and one where you do not know the exact outcome in advance. Fortunately, we do know how faces fit together in general, so we were not starting from scratch.”
What did scientists conclude?
This new study shows that the Gona population 1.5 million years ago had a mix of typical Homo erectus characters concentrated in its braincase, but more ancestral features of the face and teeth normally only seen in earlier species. For example, the bridge of the nose is quite flat, and the molars are large. Scientists determined this by comparing the size and shape of the DAN5 face and teeth with other fossils of the same geological age, as well as older and younger ones. A similar combination of traits was documented previously in Eurasia, but this is the first fossil to show this combination of traits inside Africa, challenging the idea that Homo erectus evolved outside of the continent.
I'll never forget the shock I felt when Dr. Baab first showed me the reconstructed face and jaw. The oldest fossils belonging to Homo erectus are from Africa, and the new fossil reconstruction shows that transitional fossils also existed there, so it makes sense that this species emerged on the African continent,” says Dr. Baab. “But the DAN5 fossil postdates the initial exit from Africa, so other interpretations are possible.
Dr. Yousuke Kaifu, co-author
The University Museum
The University of Tokyo
Bunkyo-ku, Tokyo, Japa.
This newly reconstructed cranium further emphasizes the anatomical diversity seen in early members of our genus, which is only likely to increase with future discoveries.
Dr. Michael J. Rogers, co-author.
Department of Anthropology
Southern Connecticut State University
New Haven, CT, USA.
It is remarkable that the DAN5 Homo erectus was making both simple Oldowan stone tools and early Acheulian handaxes, among the earliest evidence for the two stone tool traditions to be found directly associated with a hominin fossil.
Dr. Sileshi Semaw, co-author
Centro Nacional de Investigación sobre la Evolución Humana (CENIEH)
Burgos, Spain.
Future Research
The researchers are hoping to compare this fossil to the earliest human fossils from Europe, including fossils assigned to Homo erectus but also a distinct species, Homo antecessor, both dated to approximately one million years ago.
Comparing DAN5 to these fossils will not only deepen our understanding of facial variability within Homo erectus but also shed light on how the species adapted and evolved.
Dr. Sarah E. Freidline, co-author
Department of Anthropology
University of Central Florida
Orlando, FL, USA.
There is also potential to test alternative evolutionary scenarios, such as genetic admixture between two species, as seen in later human evolution among Neanderthals, modern humans and “Denisovans.” For example, maybe DAN5 represents the result of admixture between classic African Homo erectus and the earlier Homo habilis species.
We’re going to need several more fossils dated between one to two million years ago to sort this out.
Dr. Michael J. Rogers.
Publication:
Abstract
The African Early Pleistocene is a time of evolutionary change and techno-behavioral innovation in human prehistory that sees the advent of our own genus, Homo, from earlier australopithecine ancestors by 2.8-2.3 million years ago. This was followed by the origin and dispersal of Homo erectus sensu lato across Africa and Eurasia between ~ 2.0 and 1.1 Ma and the emergence of both large-brained (e.g., Bodo, Kabwe) and small-brained (e.g., H. naledi) lineages in the Middle Pleistocene of Africa. Here we present a newly reconstructed face of the DAN5/P1 cranium from Gona, Ethiopia (1.6-1.5 Ma) that, in conjunction with the cranial vault, is a mostly complete Early Pleistocene Homo cranium from the Horn of Africa. Morphometric analyses demonstrate a combination of H. erectus-like cranial traits and basal Homo-like facial and dental features combined with a small brain size in DAN5/P1. The presence of such a morphological mosaic contemporaneous with or postdating the emergence of the indisputable H. erectus craniodental complex around 1.6 Ma implies an intricate evolutionary transition from early Homo to H. erectus. This finding also supports a long persistence of small-brained, plesiomorphic Homo group(s) alongside other Homo groups that experienced continued encephalization through the Early to Middle Pleistocene of Africa.
Introduction
The oldest fossils assigned to our genus are ~2.8 million years old (Myr) from Ethiopia and signal a long history of Homo evolution in the Rift Valley1,2,3. There is evidence of multiple Homo lineages in Africa by 2.0–1.9 million years ago (Ma) and an archaeological and paleontological record of expansion to more temperate habitats in the Caucasus and Asia between 2.0 and 1.8 Ma4 (Fig. 1). The last appearance datum for the more archaicHomo habilis species (or “1813 group”) is ~1.67 (OH 13) or ~1.44 Ma, if KNM-ER 42703 is correctly attributed to H. habilis5, which is uncertain6. The archetypal early African Homo erectus fossils from Kenya (i.e., KNM-ER 3733, 3883; and the adolescent KNM-WT 15000) already present a suite of traits that distinguish them from early Homo taxa by 1.6–1.5 Ma, including larger brains and bodies, smaller postcanine dentition, more pronounced cranial superstructures (e.g., projecting and tall brow ridges), a relatively wide midface and nasal aperture, deep palate, and projecting nasal bridge1,6,7,8,9,10,11. The only evidence for H. erectus sensu lato in Africa before 1.8 Ma are fragmentary or juvenile fossils12,13,14, while fossils expressing both ancestral H. habilis and more derived H. erectus s.l. morphological traits are only known from Dmanisi, Georgia at 1.77 Ma15,16. Thus, H. erectus emerged from basal Homo between 2.0 and 1.6 million years ago, but when, where (Africa or Eurasia), and how it occurred remain unclear. An expanded fossil record also documents significant variation in endocranial 17,18 and craniofacial6,8 and dentognathic morphology19,20 throughout the Early Pleistocene, which extends to the Middle Pleistocene with the addition of small-brained Homo lineages to the human tree.The initial announcement of DAN5/P1 assigned it to H. erectus on the basis of derived neurocranial traits21. Subsequent analyses of neurocranial shape and endocranial morphology confirmed affinity with H. erectus but also noted similarities to early (pre-erectus) Homo fossils such as KNM-ER 181317,18. Only limited information about the partial maxilla and dentition was presented in the original description21. Yet, facial and dental traits are increasingly important in early Homo systematics, given overlap in brain size among closely related hominins6,8,22. The DAN5/P1 fossil is a rare opportunity to evaluate neurocranial, facial, and dental anatomy in a single Early Pleistocene Homo fossil and thus has significant implications for this discussion.Fig. 1: Early Homo and Homo erectus timeline between 2.0 and 1.0 Ma and map of key sites in Africa and southern Eurasia.
The solid bars of the timeline indicate well-established first and last appearance data; the horizontal stripes indicate possible extensions of the time range based on fragmentary or juvenile fossils. Diagonal lines signal earlier archaeological presence in those regions. The question mark indicates a possible date of <1.49 Ma for the Mojokerto, Indonesia site cf.22,23,24,25. The horizontal gray bar represents the time range associated with DAN5/P1. Colors on the map indicate presence of fossils matching taxa or geographic groups of H. erectus as indicated in the timeline. Surface renderings of the best-preserved regional representatives of archaic or small-brained Homo fossils (beginning at top and continuing clockwise): D2700, KNM-ER 1813, KNM-ER 1470, KNM-ER 3733, SK 847, OH 24, KNM-WT 15000, and DAN5/P1. All surface renderings visualized at FOV 0° (parallel). Map was generated in “rnaturalearth” package68 for R.
Here we present a new cranial reconstruction of the 1.6–1.5 Myr DAN5/P1 fossil from Gona, Ethiopia. This study demonstrates that the small-brained adult DAN5/P1 fossil (598 cm3 21) presents a previously undocumented combination of early Homo and H. erectus features in an African fossil.
Baab, K.L., Kaifu, Y., Freidline, S.E. et al.
New reconstruction of DAN5 cranium (Gona, Ethiopia) supports complex emergence of Homo erectus.
Nat Commun 16, 10878 (2025). https://doi.org/10.1038/s41467-025-66381-9
Copyright: © 2025 The authors.
Published by Springer Nature Ltd. Open access.
Reprinted under a Creative Commons Attribution 4.0 International license (CC BY 4.0)
Taken together, the evidence leaves little room for the idea that Homo erectus was a dead-end curiosity, neatly replaced by something entirely new. Instead, it represents a long-lived, widely dispersed, and internally diverse population complex that provided the evolutionary substrate from which later human lineages emerged. Its descendants were not produced by sudden leaps or special creation events, but by the ordinary, observable processes of population divergence, isolation, and adaptation acting over deep time.
Modern Homo sapiens, Neanderthals, and Denisovans did not arise as separate “kinds”, nor did they follow clean, branching paths. They represent regional outcomes of this erectus-derived heritage, shaped by geography, climate, and repeated episodes of contact and interbreeding. The genetic legacy of those interactions is still present in living humans today, providing independent confirmation of what the fossil record has long been indicating.
What emerges is not a ladder of progress but a dynamic, reticulated history: populations spreading, fragmenting, evolving in isolation, and reconnecting again. Fossils such as DAN5 are not anomalies to be explained away; they are exactly what we should expect from evolution operating on structured populations across continents and hundreds of thousands of years.
For creationism, this is deeply inconvenient. For evolutionary biology, it is precisely the kind of rich, internally consistent picture that arises when multiple independent lines of evidence converge on the same conclusion: humanity is the product of a long, complex evolutionary history, not a recent act of design.
Saturday, 13 December 2025
Refuting Creationism - Holy Sea Cow! A 20-Million-Year-Old Fossil Dugong From Arabia!
Scientists from the Smithsonian’s National Museum of Natural History, together with collaborators at Qatar Museums, have just announced the discovery of 20-million-year-old fossils of a sea cow that was a miniature version of living dugongs, and which almost certainly lived in the same seagrass meadows as modern dugongs.
The scientists have published their findings in the journal PeerJ.
If there is one thing that has creationists scraping the bottom of their barrel for reasons to dismiss evidence, it is news of fossils that are tens of millions of years older than they believe the universe is — simply because Bronze Age authors of their favourite source book, the Bible, said so.
In their determination to show the world that nothing can make them change their belief in the demonstrably absurd, creationists will resort to false accusations of lying against scientists, claim they are incompetent, or insist that they used dating methods they claim (incorrectly) to have been proven false, all in an attempt to preserve their beliefs. It is as though they imagine the entire global scientific community, and all the research institutions within it, exist solely to disprove the Bible in order to make creationists change their minds.
For rational people without such an egocentric view of the world, however, discoveries such as these miniature dugongs help to paint a fascinating picture of how species — and the ecosystems of which they are a part — have evolved over time. The fossils were found about 10 miles from a bay of seagrass that is prime habitat for modern dugongs.






















