.7" Stephanocrinus Crinoid - Rochester Shale, New York

This is a very unusual, Silurian crinoid from the Rochester Shale in New York, Stephanocrinus angulatus.

Crinoids, sometimes commonly referred to as sea lilies, are animals, not plants. They are echinoderms related to starfish, sea urchins, and brittle stars. Many crinoid traits are like other members of their phylum; such traits include tube feet, radial symmetry, a water vascular system, and appendages in multiples of five (pentameral). They first appeared in the Ordovician (488 million years ago) and some species are still alive today.
DETAILS
SPECIES
Stephanocrinus angulatus
LOCATION
Caleb's Quarry, Middleport, New York
FORMATION
Rochester Shale
SIZE
.7" long
CATEGORY
SUB CATEGORY
ITEM
#58272
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