2" Cactocrinus Crinoid Calyx - Missouri

This is a cool plate of Mississipian aged echinoderm fossils from Missouri. There is a detailed calyx of a Cactocrinus obesus. crinoid and the rock is full of crinoid stem fragments.

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
$45
DETAILS
SPECIES
Cactocrinus obesus
LOCATION
Marion County, Missouri
FORMATION
Burlington Formation
SIZE
2" on Matrix 3.4x2.6"
CATEGORY
SUB CATEGORY
ITEM
#44134
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