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Evidence for extinctions caused by the Deccan Traps includes the reduction in diversity of marine life when the climate near the K–Pg boundary increased in temperature. The temperature increased about three to four degrees very rapidly between 65.4 and 65.2 million years ago, which is very near the time of the extinction event.
Alligators and caimans split in North America during the early Tertiary or late Cretaceous (about 53 million [8] to about 65 million years ago [7]) and the latter reached South America by the Paleogene, before the closure of the Isthmus of Panama during the Neogene period.
Late Devonian: 375 million years ago, 75% of species lost, including most trilobites; End Permian, The Great Dying: 251 million years ago, 96% of species lost, including tabulate corals, and most trees and synapsids; End Triassic: 200 million years ago, 80% of species lost, including all conodonts
An alligator nest at Everglades National Park, Florida, United States Alligator olseni forelimb Alligator prenasalis fossil. The superfamily Alligatoroidea is thought to have split from the crocodile-gharial lineage in the late Cretaceous, about 80 million years ago, but possibly as early as 100 million years ago based on molecular phylogenetics.
A crocodile-like creature bit the neck of a flying dinosaur some 76 million years ago – and scientists have proof. Archaeologists found the fossilized neck bone of the young pterosaur in Canada ...
Alligators and caimans split in North America during the early Tertiary or late Cretaceous (about 53 million to 65 million years ago). [4] [5] The Chinese alligator split from the American alligator about 33 million years ago [4] and probably descended from a lineage that crossed the Bering land bridge during the Neogene.
Parvosuchus, which lived about 237 million years ago, walked on four legs and was about three feet (one meter) long, preying on smaller reptiles. The fossils were unearthed in southern Brazil.
Fossils identical to modern specimens have been dated at over 100 million years old. Modern Queensland lungfish have existed as a species for almost 30 million years. [ 30 ] The contemporary nurse shark has existed for more than 112 million years, making this species one of the oldest, if not actually the oldest extant vertebrate species.