Histocrinus & Macrocrinus Crinoid Plate - Crawfordsville

This is a very interesting crinoid association from the Witherspoon Quarry near Crawfordsville, Indiana. There is a 3" long Histocrinus graphicus on one side of the rock and a 2.2" Macrocrinus mundulus on the reverse side. Both specimens are highly detailed and were prepared under microscope using air abrasives.

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
Histocrinus graphicus & Macrocrinus mundulus
LOCATION
Crawfordsville, Indiana
FORMATION
Ramp Creek Limestone
SIZE
Histocrinus 3", Macrocrinus 2.2"
CATEGORY
SUB CATEGORY
ITEM
#20838
GUARANTEE
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.