Fossil Friday: Dilophosaurus



Species: Dilophosaurus wetherilli (dih-lohf-oh-saw-rus weh-the-rill-eye)

What it means: Two-crested lizard

Where I live: Arizona in the U.S.A.- The Kayenta formation

When to find me: The Early Jurassic period, about 196 million years ago.

My favorite food: Meat! I’m a carnivore.


dry floodplains_flat
During the dry season only the toughest cycads stay green
wet floodplains
During the wet season ferns and horsetails come to life

My neighborhood: The Kayenta formation used to be a tropical floodplain, a bit like African savannah today- but no grass or flowers. Ferns cover the open plains, dotted with islands of spiky cycad groves. Rivers crisscross the land with lush tree ferns, ginkgo trees, and conifers. Every year during the wet season the plains turn into a flooded marsh, but the hottest months bring no rain, and the rivers shrink until the plains are almost as dry as the great desert that lies to the north.


A few of my neighbors: Sarahsaurus (an early sauropod) and Scelidosaurus (armored dinosaur) are some tough neighbors. We don’t talk much. But if I’m lucky, little Scutellosaurus (small armored dinosaur) might join me for lunch. Coelophysis (smaller meat-eater) scurry around everywhere and are happy to take a few leftovers, or join me on a quick chase after frogs, turtles, or a crocodile cousin or two. They like to stay close to the rivers. A long-tailed pterosaur patrols the skies for insects like beetles, dragonflies, an ancient cousin of the moth, and something called a snakefly.

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