Pair of 3D Crinoid Fossils - Crawfordsville, Indiana

 

This is a pair of detailed, three dimensional crinoids from the famous Witherspoon crinoid quarry near Crawfordsville, Indiana. The quality of preparation on this fossil is exquisite - using skillful air-abrasion techniques under a stereo microscope. The Agaricocrinus splendens crinoid is 1.6" long (including stem) and the Abrotocrinus unicus crinoid is 2.3" long. There is a repaired crack through the rock.

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
Agaricocrinus splendens & Abrotocrinus unicus
LOCATION
Witherspoon Quarry, Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
2.1" long, 1.3" wide
CATEGORY
SUB CATEGORY
ITEM
#92524
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