Nicely Preserved Hylodecrinus Crinoid - Crawfordsville

This is a detailed Hylodecrinus briareus crinoid 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.

It is believed that crinoids from the Edwardsville Formation were 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.
DETAILS
SPECIES
Hylodecrinus briareus
LOCATION
Witherspoon Quarry, Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
1.6" including stem
CATEGORY
SUB CATEGORY
ITEM
#27558
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