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1.5" Uperocrinus Crinoid, Unique Presentation - Indiana
This is a uniquely prepared crinoid fossil, collected from the Edwardsville Formation in Montogemery co., Indiana. Including the stem, it is " long and was prepared to stand free from the limestone rock, using air-abrasives. The base has been cut to allow for presentation on a flat surface.
It is believed that crinoids from the Ramp Creek Limestone were buried in sediment from nearby deltas during storms. The resulting siltstone deposits are soft enough that fossils can be extracted in exquisite, three-dimensional relief.
It is believed that crinoids from the Ramp Creek Limestone were buried in sediment from nearby deltas during storms. The resulting siltstone deposits are soft enough that fossils can be extracted in exquisite, three-dimensional relief.
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.
SPECIES
Uperocrinus marinus
LOCATION
Montgomery County, Indiana
FORMATION
Edwardsville Formation
SIZE
1.5"
CATEGORY
SUB CATEGORY
ITEM
#68576
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