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the earliest species
$450 Scientific Name: Apatosaurus sp
The specimen has been nicknamed "The Running Bird" by those who found it
It had relatively short legs and a short
Stretching nearly two feet long
Orthacanthus/Xenacanths Shark skeleton Dimorphodon the earliest speciesOrthacanthus is an extinct genus of fresh water shark from a family of prehistoric sharks known as Xenacanths. Members of the genus had a long spine growing from the back of their skull and a very long dorsal fin, which ran all along its back giving it an eel like appearance. About 260 million years ago, Orthacanthus was the terror of freshwater swamps and bayous in Europe and North America. Its body reached nearly 10 feet (3 meters) in length and its
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