13.6" Fossil Crinoid Plate (Eight Species) - Crawfordsville, Indiana

Fossil Crinoid Plate (Eight Species) - Crawfordsville, Indiana #198238

This is a beautiful, 13.6" plate of twelve detailed fossil crinoids (eight species) from Crawfordsville, Indiana. These fossils have been microscopically prepared using air abrasives, revealing their intricate details and three dimensional preservation.

Comes with an acrylic/metal display stand.

Identification:
1) - Unidentified crinoid
2&10) - Cyathocrinites multibrachiatus
3,7,9&11) - Macrocrinus mundulus
4) - Barycrinus sp.
5) - Onychocrinus sp.
6) - Pellecrinus intermedius
8) - Unidentified crinoid
12) - Barycrinus stellatus

Crinoids from the Ramp Creek Limestone were likely 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.

About Crinoids