Macrocrinus Crinoid From Crawfordsville

 
This is a Macrocrinus mundulus crinoid fossils from Montgomery County, Indiana. The matrix is approximately 3.8x2" The Macrocrinus is about 2 1/2" long and there are several other crinoids partially exposed.

Crinoids are commonly known as sea lilies, though they are animals, not plants. They are echinoderms related to starfish, sea urchins, and brittle stars. They attached themselves to the sea floor and had feathery, tentacle-like appendages which they used to capture particles of food. First appearing in the Ordovician period, 488 million years ago, they still survive to this day in deep water.
DETAILS
SPECIES
Macrocrinus mundulus
LOCATION
Montgomery County, Indiana
FORMATION
Ramp Creek Limestone
SIZE
Matrix 3.8x2"
CATEGORY
SUB CATEGORY
ITEM
#12833
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