Ultrasaurus
In the Mesozoic era
dinosaur
The Mesozoic
The Mesozoic
Mesozoic
The first stage in dinosaur times (the Mesozoic Era) was the Triassic.
Carnotaurus lived in the Cretaceous period of the Mesozoic era.
Yes, the Cambrian Period was before the Mesozoic Era
Mesozoic era
The Age of Reptiles was the Mesozoic Era. The three periods were the Triassic, Jurassic, and Cretaceous.
All non-avian dinosaurs lived during the Mesozoic era. Every dinosaur you can think of, from Tyrannosaurus rex, Triceratops, and Ankylosaurus to Stegosaurus, Apatosaurus, and Velociraptor, lived during the Mesozoic era. Many birds, however, which are a subgroup of dinosaurs, lived after the Mesozoic era.
Dinosaurs first appeared around 230 million years ago, during the Triassic period. This was part of the Mesozoic era, which covered almost all of dinosaur existence.