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2.5" Fossil Crinoid (Dizygocrinus) - Crawfordsville, Indiana
This is a detailed, 2.5" long (including stem) fossil crinoid (Dizygocrinus mutabilis) from the famous crinoid beds near Crawfordsville, Indiana. It has been expertly prepared with air abrasives under microscope to reveal the intricate, 3D preservation of the fossil.
Crinoids from the Ramp Creek Limestone were likely 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.
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
Dizygocrinus mutabilis
LOCATION
Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
Crinoid: 2.5" long (including stem). Entire specimen: 2.5 x 1.9"
CATEGORY
SUB CATEGORY
ITEM
#197654
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