5.2" Crinoid Plate - Two Species - Crawfordsville

Crinoid Plate - Two Species - Crawfordsville #94802

This is a spectacular crinoid association from the Edwardsville Formation near Crawfordsville, Indiana, with two individual specimens representing two species present. Both are preserved 3D and have been prepared with air abrasives. The entire piece is 5.2 x 3". This is a natural association and neither of the specimens are composites.

It comes with an acrylic display stand.

Identification by #:

#47 - Scytalocrinus decadactylus
#69 - Macrocrinus mundulus

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