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Description
112 million years ago in what is now Oklahoma’s Two Antlers Formation, a Deinonychus antirrhopus stands atop a juvenile Tenontosaurus that has been pinned to the ground by its huge talons. The raptor will then proceed to eat the ornithopod alive. The dromaeosaurs’ iconic sickle-claws evolved from the climbing tools of smaller, basal forms of the mid-Jurassic into formidable tools for subduing or cutting off the jugular veins of big game in the larger, more poweful forms that emerged in the Cretaceous.

Description
112 million years ago in what is now Oklahoma’s Two Antlers Formation, a Deinonychus antirrhopus stands atop a juvenile Tenontosaurus that has been pinned to the ground by its huge talons. The raptor will then proceed to eat the ornithopod alive. The dromaeosaurs’ iconic sickle-claws evolved from the climbing tools of smaller, basal forms of the mid-Jurassic into formidable tools for subduing or cutting off the jugular veins of big game in the larger, more poweful forms that emerged in the Cretaceous.