6.6" Fossil Crinoid Plate (Two Species) - Crawfordsville, Indiana

This is a beautiful, 6.6" wide plate of detailed fossil crinoids from Crawfordsville, Indiana. These fossils have been microscopically prepared using air abrasives, revealing their intricate details and three dimensional preservation. The three crinoids include two of the species Actinocrinites gibsoni (#52 - 3.65" and 1.8" long including stem) and Agaricocrinus americanus (#54 - 1.8" long including stem).

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.



FOR SALE
$795
DETAILS
SPECIES
Actinocrinites gibsoni & Agaricocrinus americanus
LOCATION
Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
6.6 x 5.3" rock
CATEGORY
SUB CATEGORY
ITEM
#216145
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