Pterosaurs were close cousins of dinosaurs that lived between 253 to 66 million years ago, during the Mesozoic era. These animals were the first vertebrates to evolve flight – tens of millions of ...
g. the Brontothere and Elm Leaf of the Cenozoic Era are shown against the yellow background, the Triceratops Skull and Ammonite of the Mesozoic Era are shown against the green background, etc.). The ...
The largest extinction events define a change in era. The end of the Paleozoic and beginning of the Mesozoic 251 million years ago marks the largest mass extinction in the history of the planet, which ...