Synthetoceras tricornatus poster Mammut Koolasuchus was a giant brachyopoid

Koolasuchus was a giant brachyopoid temnospondyl from the Early Cretaceous of Australia

The single Epidexipteryx fossil contains the earliest known example of display feathers and Mongolarachne is the largest known fossil spider

By Andrey Atuchin

By Chris Masnaghetti

Governor Doug Ducey signed the bill into law which made this brachiosaur Arizona's official dino

Synthetoceras tricornatus poster Mammut Koolasuchus was a giant brachyopoidThe males of this extinct ungulate were armed with a distinctive Y shaped horns that grew above its snout. Such a strange forked structure could have helped them intimidate each other to settle territorial disputes.