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Pair Of 3D Platycrinites Crinoid Fossils - Crawfordsville, Indiana
This is a pair of very 3D Platycrinites crinoids from the famous crinoid beds near Crawfordsville, Indiana. A significant portion of the stem is nicely preserved on one of the crinoids. The quality of preparation on these fossils is exquisite - using skillful air-abrasion techniques under a stereo microscope.
The longer stem has likely been composited.
It comes with an acrylic display stand.
The longer stem has likely been composited.
It comes with an acrylic display stand.
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
Platycrinites hemisphericus
LOCATION
Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
Rock 6.5 x 5.1
CATEGORY
SUB CATEGORY
ITEM
#94739
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