Ordovician age approximately 495-443 million years ago. The animals have begun to find spine. Looks like a fish, nautiloid reef squid, group, type, or tetracoral, a Graptolite, Echinoid, starfish (asteroid), Crinoids, and corals, which look like Bryozoan Trilobite found in this era. There are different styles, they found in Cambrian fossil age age is the nautiloid.
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