Three Fossil Sea Cucumbers (Achistrum) - Mazon Creek

This is three fossil sea cucumber (Achistrum) from the Carbondale Formation near Essex, Illinois preserved in an ironstone nodule. The largest sea cucumber is 2.6" long.

Sea cucumbers are sea floor dwelling echinoderms with tube bodies, leathery skin and an endoskeleton.

DETAILS
SPECIES
Achistrum sp.
LOCATION
Essex, Illinois
FORMATION
Carbondale Formation
SIZE
2.6" largest sea cucumber, 5.0 x 2.9" nodule
ITEM
#120945
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