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with 16 in Canada
They are 542-488 million years old
but these serrations were worn down in the first few years of the animal's life
in order to propel themselves backwards or for turning side to side
Antrimpos belongs to the phylum Arthropoda and class Malacostraca
Stegosaurus Dorsal Plate Argentinosaurus with 16 in CanadaNamed Stegosaurus, or "roof lizard" for it's large, flat dorsal plates, this herbivorous dinosaur is a classic favorite. Scientists debate the purpose of those trademark plates, but many suggest they were used to regulate heat. Filled with blood vessels, the plates could quickly warm the big plant eater when faced towards the sun. Stegosaurus sp. Late Jurassic (150 m. y. a.) Morrison Formation Cleveland Lloyd Quarry, Utah Shipping Included
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