dinosaur
I think they became extinct at the end of the Mesozoic era
the first type of life form that appeared in the mesozoic era was a fish! the second type of life form that appeared in the mesozoic era was the reptile! and the third was a reptile bird!!!!!!!!!!!!!!!!
Mesozoic era
mesozoic era (obvious =p)
Pterosaurs
The tyrannosaurus was a reptile. All dinosaurs were reptiles. The word "Dinosaur" means "Terrible Lizard".
The non-avian dinosaurs did not survive the mass extinction event at the end of the Mesozoic era, known as the Cretaceous-Paleogene extinction event. These reptiles went extinct, paving the way for the rise of mammals and birds.
The dinosaurs lived in the Mesozoic Era, which includes the Triassic, Jurassic, and Cretaceous periods. The first dinosaurs appeared in the late Triassic and went extinct at the end of the Cretaceous.
Trilobites became extinct about 250 million years ago, in the Mesozoic Era.
The Mesozoic era.
Some dinosaurs were in Antarctica in Mesozoic era.
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