4.9" Crinoid Plate (Macrocrinus & Camptocrinus) With Gastropod

Crinoid Plate (Macrocrinus & Camptocrinus) With Gastropod #94378

This is a spectacular crinoid and gastropod association from the Edwardsville Formation near Crawfordsville, Indiana, with four individual specimens present, of which three are different species. All are preserved 3D and have been prepared with air abrasives. The entire piece is 4.9 x 3.2". This is a natural association and none of the specimens are composites.

It comes with an acrylic display stand.

Identification by #:

#57 - Camptocrinus myelodactylus
#69 - Macrocrinus mundulus (2)
#92 - Platyceras equalateralis

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