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2.5" Fossil Crinoid (Barycrinus) - Warsaw Formation, Illinois
This is a 2.5" long, fossil crinoid crown (Barycrinus) from the Warsaw Formation in Illinois.
Most of the 3D crinoids coming out of the midwest are coming from Crawfordsville, Indiana making these Illinois specimens a little more unusual. The specimen has been prepared using air abrasives to remove the hard limestone surrounding the specimen, and reveal the very detailed calyx.
Most of the 3D crinoids coming out of the midwest are coming from Crawfordsville, Indiana making these Illinois specimens a little more unusual. The specimen has been prepared using air abrasives to remove the hard limestone surrounding the specimen, and reveal the very detailed calyx.
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.
SPECIES
Barycrinus sp.
AGE
LOCATION
Adams County, Illinois
FORMATION
Warsaw Formation
SIZE
2.5" long on 4 x 3.7" limestone
CATEGORY
SUB CATEGORY
ITEM
#188710
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