アメリカ自然史博物館のインスタグラム(amnh) - 3月5日 03時16分

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Although Prestosuchus chiniquensis was a large animal with big claws and a huge head with sharp-toothed jaws, it was not a dinosaur. This creature belongs to a larger group called Pseudosuchians, which also includes modern day crocodilians.
Today, these creatures are only represented by a couple dozen species, but back in the Triassic, they were extremely diverse, and in direct competition with early dinosaurs. Late in the Triassic, multiple extinction events led to the demise of many major Pseudosuchian lineages, opening up niches for dinosaurs to take advantage of. Thus, the rest of the Mesozoic became the age of dinosaurs.
This specimen is a reconstructed composite of several Prestosuchus specimens collected in Brazil and dating from the Late Triassic, about 210 million years ago.
AMNH/D.Finnin

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