Fig. 1 | Localities of Sinemurian basal sauropodomorph eggs/eggshells, stratigraphic section of the Zhangjiawa Member (Lufeng Formation, Dawa Dinosaur Mountain), and the rock containing Mutabilisoolithus dawaensis and associated embryonic skeletons.
Creationism thrives on gaps because it is easy to fool scientifically illiterate people looking for confirmation for their pre-exiting bias with a god of gaps and a false dichotomy fallacy. But one massive gap they invariably ignore is the gap between the real start of the history of life on Earth some 3.8 billion years ago and the mythical 'Creation Week' 6,000-10,000 years ago, as the Bible narrative claims. This means it's easy to refute creationist beliefs simply by discovering evidence from the long pre-'Creation Week' history.
Other gaps creationists crave are the ones that transitional fossils fill, hence creationists insistence that such transitional fossils are missing, despite them regularly being found by palaeontologists, as reported in this blog and the scientific journals. This article then will have creationists performing all manner of intellectual gymnastics to try to minimise it or ignore it altogether.
Some 195 million years ago, in what is now Yunnan, China, an early dinosaur laid eggs with a revealing combination of features: a thick organic membrane and a thin mineralised layer that had not formed a rigid, interlocking shell. These eggs pre-date the supposed creation of the Universe in the conventional young-Earth biblical chronology by almost their entire existence. They also preserve something creationists repeatedly insist is missing from the fossil record: an intermediate condition illuminating an evolutionary transition.
The fossil eggshell, named Mutabilisoolithus dawaensis, is described by Zhiyong Di and colleagues in a paper published in Nature Communications. Associated with an early-diverging sauropodomorph dinosaur, it combines flexibility with a limited degree of biomineralisation — the biological deposition of minerals. Its thin calcareous layer consists of shell units that do not interlock, while its underlying membrane is exceptionally thick. This is a soft eggshell, but “soft” does not mean entirely devoid of mineral reinforcement.









































