Two Fossil Crinoids (Aorocrinus & Dichocrinus) - Gilmore City, Iowa

These are two naturally associated fossil crinoids of the species Dichocrinus multiplex (#7) and Aorocrinus iola (#1) from the Gilmore City Formation of Gilmore City, Iowa. The rock has been meticulously removed using air abrasives to reveal the beautiful structure of these crinoids.

There is a repaired crack just beneath the Dichocrinus crinoid where the rock chipped away and was glued back in place.

#1 - Aorocrinus iola (.48" long)
#7 - Dichocrinus multiplex (.7" long including stem)

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.

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DETAILS
SPECIES
Aorocrinus iola & Dichocrinus multiplex
LOCATION
Gilmore City, Iowa
FORMATION
Gilmore City Formation
SIZE
2.1 x 2.1" rock
CATEGORY
SUB CATEGORY
ITEM
#148680
GUARANTEE
We guarantee the authenticity of all of our specimens.