Bicharracosaurus dionidei
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Landscape view from the excavation site.
Photo: Amalia Villafañe
SNSB – Staatliche Naturwissenschaftliche Sammlungen Bayerns » Palaeontologists Discover New Long-Necked Dinosaur in Patagonia
A German-Argentine team of palaeontologists led by dinosaur expert Oliver Rauhut of the Staatliche Naturwissenschaftliche Sammlungen Bayerns (SNSB — the Bavarian State Natural History Collections) has discovered a new long-necked dinosaur,
Bicharracosaurus dionidei, from the Late Jurassic of Argentina, dating to about 155 million years before creationism's mythical 'Creation Week'. The team's findings have recently been
published in PeerJ.
Dinosaurs are such a problem for creationists, and the evidence for their existence is so overwhelming, that they cannot get away with the usual denial of inconvenient facts. Besides, children find them fascinating and these are exactly the people creationists need to recruit into their cult before they acquire the knowledge and wisdom that are the effective antidotes to creationist brainwashing.
Their problem is simple. According to the childish mythology they are required to defend, nothing died until Eve's 'sin', when their supposedly omnipotent god somehow lost control of its creation and things began to go wrong. That means they must pretend that dinosaurs and humans coexisted, and that dinosaurs either survived the mythical global flood or were all exterminated in it. But that merely raises more questions. Why would a creator god go to the trouble of creating dinosaurs only to destroy them for something in which they played no part? And why are there no human fossils, artefacts or footprints in the same undisturbed geological strata as non-avian dinosaurs?
But creationism is not about following evidence or answering awkward questions of the kind, “if that is true, why do we find this?” It is about believing what one is told to believe, or being threatened with hellfire and eternal torture for asking the wrong questions.
The result of this hopeless muddle is that creationists are forced into ever more desperate claims. They must persuade their followers that dinosaurs were alive only a few thousand years ago, by presenting the Paluxy River “human footprints” as evidence, despite their having long since collapsed into misidentified dinosaur tracks, erosional marks and dubious carvings. They also repeat the claim that scientists found fresh blood and soft tissue in dinosaur fossils, or that dinosaur remains have been “carbon dated” to only a few thousand years old — claims that depend on misrepresentation, contamination, or the simple fact that radiocarbon dating is the wrong tool for fossils tens of millions of years old.
But the inconvenient facts remain.
And the facts are that all non-avian dinosaurs died out in the Cretaceous-Palaeogene mass extinction about 66 million years ago, tens of millions of years before humans existed. The avian dinosaurs survived as birds, but the great terrestrial dinosaur lineages disappeared. Meanwhile, palaeontologists continue to dig up new fossils which confirm that dinosaurs were a highly diverse group of reptiles and the dominant large land animals for vastly longer than humans, or even placental mammals, have existed.
Needless to say, there were no human footprints, stone tools, fresh blood, or conveniently misplaced creationist anachronisms associated with the remains of
Bicharracosaurus dionidei. What the researchers found was something far more useful: the partial skeleton of an adult sauropod from the Late Jurassic Cañadón Calcáreo Formation in Patagonia, including more than 30 vertebrae from the neck, back and tail, together with ribs and part of the pelvis.
At an estimated length of about 20 metres,
B. dionidei was smaller than the very largest sauropods, some of which reached around 40 metres. But its scientific importance lies not in record-breaking size, but in where it fits in the sauropod family tree. The animal appears to have combined features seen in both brachiosaurids and diplodocids, and phylogenetic analyses suggest it was a macronarian sauropod with possible brachiosaurid affinities. If that interpretation is confirmed, it would make
B. dionidei the first known Jurassic brachiosaurid from South America.
It lived on the southern supercontinent Gondwana, before South America and Africa had fully separated, and it helps fill a significant gap in the fossil record of Late Jurassic sauropods from the Southern Hemisphere. Much of what palaeontologists know about these animals has come from North America, Europe and the famous Tendaguru beds of Tanzania, so a new Patagonian form provides important evidence for how these giant herbivores evolved and dispersed across the ancient southern continents.