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Shaped rather like a sunfish
even in the neck
form the cliffs
Trace fossils from sharks include spiral forms of coprolites or fossilized feces
Jellyfish are extremely rare in the fossil record
Starfish (Class Asteroidea) Posters Shaped rather like a sunfishStarfish (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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