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Location Mean atmospheric O2 Mean temperature |
Geologic Time Scale
Era: Paleozoic |
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Doryaspis & Actiniaria8-inch-long
jawless fish of the genus Doryaspis swim amongst a bed of Anthozoa In addition to a variety of anemones are palm-like crinoids (class Crinoidea), pentagonal-shaped sea stars, nautilus-like ammonites, and squid-like nautiloid cephalopods of the genus Orthoceras. |
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