Late Cretaceous
Synonyms
Examples
An early occurrence of Pteranodon sternbergi from the Smoky Hill Member (Late Cretaceous) of the Niobrara Chalk in western Kansas.
However, during the Late Cretaceous to the Paleocene (65-55 million years ago), the seaway had begun to recede, leaving behind thick marine deposits and a relatively flat terrain which the seaway had once occupied.
"Cranial remains of Quetzalcoatlus (Pterosauria, Azhdarchidae) from Late Cretaceous sediments of Big Bend National Park, Texas."
Fossilized snake remains are known from early Late Cretaceous marine sediments, which is consistent with this hypothesis; particularly so, as they are older than the terrestrial Najash rionegrina.
Late Cretaceous fossils of marine vertebrates are known from East Timor deposits.
Maastrichtian record of neornithine birds in Antarctica: comments on a Late Cretaceous radiation However, more complete remains of undisputed charadriiforms are known only from the mid- Paleogene onwards.