.95" Fossil Crinoid (Sarocrinus) - Crawfordsville, Indiana

This is a .95" fossil crinoid from the Edwardsville Formation, Crawfordsville, Indiana. The species of this specimen is Sarocrinus granilineus and the calyx and feeding arms are present. The quality of preparation on this fossil is very good - using skillful air-abrasion techniques under a stereo microscope.

Please Note: There is a repaired crack through the crinoid, requiring crack repair and very minor gap fill restoration.

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.

Crinoids from the Ramp Creek Limestone were likely buried in sediment from nearby deltas during storms. The resulting siltstone deposits are soft enough that fossils can be extracted in exquisite, three-dimensional relief.

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.

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DETAILS
SPECIES
Sarocrinus granilineus
LOCATION
Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
.95", 2.1 x 1.9" rock
CATEGORY
SUB CATEGORY
ITEM
#132799
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