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and rhinoceroses)
With a leg-span estimated to be 20 inches
They bear a strong resemblance to pigs
represents one of five species of amphibians which are found at the Messel site
Starfish (Class Asteroidea) Troodon and rhinoceroses)Starfish (Class Asteroidea) Jurassic Age, Germany Starfish belong to a phylum of invertebrates known as Echinodermata. Echinoderms (Latin for "spiny skin") are named for their porous armor of calcite plates. Primitive Echinoderms first appeared in the fossil record 570 million years ago in the Lower Cambrian Period. Other Echinoderms include sea urchins, sand dollars, sea cucumbers, and sea lilies. The earliest known starfish appeared in the Lower
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