Fossil Crinoid Calyx's (3 Species) - Burlington Formation, Missouri

 
 
 
This is a cool specimen of Mississipian aged crinoid fossils from Missouri. There are calyx's of crinoid species' Physetocrinus ventricosus, Cactocrinus glans and Uperocrinus sp. The Cactocrinus crinoid calyx has been repaired and remounted on the rock. Various crinoid stems and fossils can be seen throughout the exterior of the rock.

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.


DETAILS
SPECIES
Physetocrinus ventricosus, Cactocrinus glans & Uperocrinus sp.
LOCATION
Monroe County, Missouri
FORMATION
Burlington Formation
SIZE
Rock is 4x3.4"
CATEGORY
SUB CATEGORY
ITEM
#68361
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