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4.2" Fossil Crinoid (Macrocrinus) - Crawfordsville, Indiana
This is a gorgeous 4.2" long (including stem) Macrocrinus mundulus crinoid from the famous crinoid beds near Crawfordsville, Indiana. The quality of preparation on this fossil is exquisite, using skillful air-abrasion techniques under a stereo microscope.
Comes with an acrylic display stand.
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
LOCATION
Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
Crinoid: 4.2" long (including stem), Rock: 4.9 x 2.5"
CATEGORY
SUB CATEGORY
ITEM
#310201
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