Spectacular, 12.6" Crinoid Plate (6 species) - Crawfordsville

 
 
 
 

This is a spectacular crinoid association from the Edwardsville Formation near Crawfordsville, Indiana, with six different species present. All are preserved 3D and have been prepared with air abrasives. The entire piece is 12.6 x 6.9". There are two Ulrichicrinus coryphaeus crinoids, two Macrocrinus mundulus, a Camptocrinus sp., an Agaricocrinus splendens, a Platycrinites niotensis and one Cyathocrinites multibrachiatus. This is a natural association and none of the crinoids are composites.

Comes with a display stand.

Identification by #:

17 - Cyathocrinites multibrachiatus
50 - Ulrichicrinus coryphaeus
55 - Agaricocrinus splendens
56 - Camptocrinus sp.
69 - Macrocrinus mundulus
74 - Platycrinites niotensis

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
$695
DETAILS
SPECIES
Camptocrinus sp., Macrocrinus mundulus, Ulrichicrinus coryphaeus, Agaricocrinus splendens, Platycrinites niotensis & Cyathocrinites multibrachiatus
LOCATION
Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
Rock 12.6 x 6.9"
CATEGORY
SUB CATEGORY
ITEM
#92525
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