What was alive 250 million years ago?

Answer 1

250 million years ago Earth was at the very beginning of the Triassic Period and was just starting to recover from the Permian-Triassic extinction event, the worst of Earth's five great extinctions. Various lizard-like reptiles were around at this time, some of which would become the ancestors of crocodiles and dinosaurs, which had not yet evolved. A few reptiles-like animals called synapsids, most of which disappeared in the extinction, were still clinging on as well. Mammals would later evolve from these animals. Insects were also present, though not all of the groups we know had evolved. There were no grasses or flowering plants and it is entirely possible that all of the trees of the previous area were extinct, such was the devastation. New species of tree would have to evolve from smaller plants. A variety of fish, including sharks swam the one ocean that existed at this time and were accompanied by shelled cephalopods.

Answer 2

back then some animals were not around that are around now.Also back then it used to be more field and way back was dinosaurs.An interesting fact is that sea turtles lived way back even before dinosaurs lived.

HOPE THAT HELPED

Answer 3

Dinosaurs were alive 250 million years ago during the Mesozoic Era. They dominated the Earth during this time period.