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7.1" Crinoid Plate - Four Specimens - Crawfordsville
This is a spectacular crinoid association from the Edwardsville Formation near Crawfordsville, Indiana, with four individual specimens present representing the Macrocrinus mundulus species. All are preserved 3D and have been prepared with air abrasives. This is a natural association and none of the specimens are composites.
It comes with an acrylic display stand.
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
Macrocrinus mundulus & others
AGE
LOCATION
Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
Rock 7.1 x 4.6"
CATEGORY
SUB CATEGORY
ITEM
#94819
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