Texas Junior Naturalists

Meet the Texas Dinosaurs and Their Friends

Torosaurus skeleton

The Mesozoic Era is called "The Age of Reptiles" because that was the era (225-65 million years ago) when the dinosaurs lived and were the dominant life form. The Mesozoic is divided into 3 periods, the Triassic, Jurassic and the Cretaceous. The Cretaceous Period was the most productive of the Mesozoic in deposition of fossils found in Texas. Each period featured different dinosaurs that lived during that time. Dinosaurs are a special group of reptiles that lived on land. They did not fly or swim.

Triassic Shuvosaurus
Technosaurus
Jurassic*
There is very little evidence of Jurassic Dinosaurs in Texas
Early Cretaceous Acrocanthosaurus
Deinonychus
Hypsilophodont
Iguanodon
Pawpawsaurus
Pleurocoelus
Protohadros
Tenontosaurus
Late Cretaceous Alamosaurus
Chasmosaurus
Edmontosaurus
Euoplocephalus
Kritosaurus
Ornithomimus
Panoplosaurus
Stegoceras
Torosaurus
Tyrannosaurus
Non-Dinosaur Prehistoric Animals Archaeopteryx
Dimetrodon
Edaphosaurus
Mammoth
Mosasaur
Quetzalcoatlus

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