3D Platycrinites Crinoid Fossil - Crawfordsville, Indiana

This is a very 3D Platycrinites crinoid from the famous crinoid beds near Crawfordsville, Indiana. The quality of preparation on this fossil is exquisite - using skillful air-abrasion techniques under a stereo microscope.

The crinoid is a composite meaning the stem and the crown didn't come from the same animal. The crown was found individually and remounted on the rock. That is the reason for the bargain price.

Comes with an acrylic display stand.

It is believed that crinoids from the Ramp Creek Limestone 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.

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.

Platycrinites hemisphericus
Crawfordsville, Indiana
Edwardsville Formation
Rock 4.4x3.3
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