Risultati di ricerca
4 giorni fa · On the basis of fossil remains from at least four individuals, including one with a large skull and a nearly complete backbone (Fig. 1), the evidence suggests that Gaiasia had an overall body ...
3 giorni fa · Fossil, remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in Earth’s crust. The complex of data recorded in fossils worldwide—known as the fossil record—is the primary source of information about the history of life on Earth.
- The Editors of Encyclopaedia Britannica
28 giu 2024 · Their hard, calcified exoskeleton is frequently well preserved in the fossil record, making trilobites some of the best studied fossil marine animals. Palaeontologists have been able to figure out a lot about trilobites from their exoskeletal ‘shell’, but their understanding has been limited by the relative scarcity of soft tissue preservation, including of the arthropods’ legs ...
4 giorni fa · An ancient aquatic predator resembling a giant salamander turned up in an African fossil deposit, suggesting unwritten chapters of how animals moved onto land.
11 giu 2024 · Scientists Turn a Famous Fossil on Its Head. Researchers have long assumed that a tube in the famous Pikaia fossil ran along the animal’s back. But a new study turned the fossil upside down.
1 giorno fa · Together, the fossil pieces tell the story of a creature that defied all expectations based on the evolutionary paths of better-known animals from the time, which mostly lived closer to the equator.
24 giu 2024 · An extinct ribbonlike sea creature about the size of a human hand was one of the earliest animals to evolve a precursor of a backbone. Scientists recently identified the animal’s nerve cord by ...
