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It has been thought that megalodon became extinct around the end of the Pliocene, about 2.6 Mya; [21] [22] claims of Pleistocene megalodon teeth, younger than 2.6 million years old, are considered unreliable. [22] A 2019 assessment moves the extinction date back to earlier in the Pliocene, 3.6 Mya. [23]
Brachysuchus (meaning "wide crocodile") is an extinct genus of phytosaur known from the late Triassic period (Carnian stage) of Dockum Group in Texas, United States.It is known from the holotype UMMP 10336 [1] is composed of a skull, lower jaws and partial postcranium and from the associated paratype UMMP 14366, nearly complete skull, recovered from the 'Pre-Tecovas Horizon' in the Dockum Group.
The mastodon became the subject of a Michigan political campaign in 2000 when Washtenaw Community College geology instructor David P. Thomas Sr. aimed to make it the state fossil of Michigan. He, assisted by the Slauson Middle School science teacher Jeffrey Bradley, was sponsored by the state senator Thaddeus McCotter , arranged petition drives ...
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Despite the world's last captive thylacine dying in 1936, the secretive animal wasn't declared extinct until 1986. More recently in 2007 the Baiji dolphin , a rare river dolphin native to China ...
†Brachysuchus megalodon – type locality for species †Bravoceratops – type locality for genus †Bravoceratops polyphemus – type locality for species; Fossil of the sauropod dinosaur footprint ichnogenus Brontopodus †Brontopodus – type locality for genus; Busycon – tentative report; Cadulus; Caestocorbula †Caestocorbula crassaplica
[4] [8] Overall, during the Late Pleistocene about 65% of all megafaunal species worldwide became extinct, [9] rising to 72% in North America, 83% in South America and 88% in Australia, [10] with all mammals over 1,000 kilograms (2,200 lb) becoming extinct in Australia and the Americas, [1] and around 80% globally. [11]