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Hexaprotodon sivalensis is an extinct species of hippo from the Pliocene of south Asia.
(Credit: WillemSvdMerwe)
Elephantosaurus was a dicynodont from the Triassic period.
(Credit: Dmitry Bogdanov)
Chlamydoselachus goliath was a large frilled shark that lived during the Late Cretaceous in Angola's southern Benguela Basin.
(Credit: Hodari Nundu)
Lotosaurus, a sail-backed toothless quadruped crocodile-line archosaur from the Middle Triassic (about 240 Mya).
S. fatalis fighting dire wolves over a Columbian mammoth carcass in the La Brea Tar Pits.
(Credit: Robert Bruce Horsfall)
Meiolania were a genus of turtle relatives that sported horns and a spiked tail.
(Credit: Nix Draws Stuff)
The American zebra or Hagerman horse was an equid from North America that lived during the Pliocene epoch.
(Credit: InkArt)
The fearsomely-fanged amphibian Cacops catching the small reptile Captorhinus.
(Credit: University of Toronto)