@clarkeocrinus.bsky.social on Bluesky

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David Clark

clarkeocrinus.bsky.social

did:plc:4jetvyumv6g7r3sj5bheia76

Devonian crinoid, Pithocrinus cooperi, from the Alpena Limestone of Michigan. The tip of the calyx has a few spines preserved, but all of the arms are missing. #FossilFriday

2025-10-17T14:37:47.357Z