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Four Detailed Fossil Crinoids - Crawfordsville, Indiana
This is an aesthetic association of four crinoid (three species) fossils from the Edwardsville Formation in Crawfordsville, Indiana. The limestone measures 4.7 x 4.3" and there are two Macrocrinus mundulus with attached stems, a Decadocrinus turnidulus with stem and a crown of a Cyathocrinites iowensis. They have all been prepared under microscope with air abrasives. There is some repair and gap filling to the rock, but this is a natural association.
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, Decadocrinus turnidulus & Cyathocrinites iowensis
LOCATION
Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
Rock 4.7x4.3"
CATEGORY
SUB CATEGORY
ITEM
#188690
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