4.1" Multiple Blastoid Fossil Plate - Arkansas

This is a 4.1" plate of blastoid (Schizoblastus sayi) fossils from the Elsey Formation in Boone County, Arkansas. They have been exposed from the rock, along with a variety of crinoid stem and shell fragments.

It comes with an acrylic display stand.

Blastoids are an extinct type of filter feeding, stemmed echinoderm that resembles a small hickory nut. They thrived during the Mississippian period before going extinct during the great Permian extinction. While not as diverse as their crinoid relatives, they were equally as common in rocks around the world. Blastoids were protected by a set of interlocking plates that formed the main body, or theca. In life, a typical blastoid's theca was attached to a stalk or column made up of stacked disc-shaped plates.
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DETAILS
SPECIES
Schizoblastus sayi
LOCATION
Boone County, Arkansas
FORMATION
Elsey Formation
SIZE
4.1 x 3"
CATEGORY
SUB CATEGORY
ITEM
#198192
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