Latest Incertae sedis Stories
The radula sounds like something from a horror movie – a conveyor belt lined with hundreds of rows of interlocking teeth.
Beginning around 542 million years ago, a profusion of animals with shells and skeletons began to appear in the fossil record.
Two paleontologists studying ancient fossils they excavated in the South Australian outback argue that Earthâ€™s ecosystem has been complex for hundreds of millions of years â€“ at least since around 565 million years ago, which is included in a period in Earthâ€™s history called the Neoproterozoic era.
By Shen, Bing Xiao, Shuhai; Dong, Lin; Zhou, Chuanming; Liu, Jianbo ABSTRACT- Upper Neoproterozoic successions in the North China and nearby Chaidam blocks are poorly documented. North China successions typically consist of a diamictite unit overlain by siltstone, sandstone, or slate.
Scientists at the University of Chicago and the National Museum of Natural History in Washington, D.C., have produced new evidence to finally resolve the mysterious identity of what they regard as one of the weirdest organisms that ever lived.
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.