Four Fossil Crinoid (Eretmocrinus And Dichocrinus) Plate - Iowa

This is four fossil crinoids, three Eretmocrinus and one Dichocrinus from the Gilmore City Formation,Gilmore City, Iowa. The largest Eretmocrinus is .8" and the Dichorinus is .4". This specimen shows the calyx (body) and pinnules (feeding arms) of all individuals. The rock has been meticulously removed using air abrasives, to reveal the beautiful structure of this crinoid.

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.


Comes with an acrylic stand.
DETAILS
SPECIES
Eretmocrinus tentor, Dichocrinus multiplex
LOCATION
Gilmore City, Iowa
FORMATION
Gilmore City Formation
SIZE
.8" largest Eretmocrinus, .5" Dichocrinus, 2.3 x 1.9" rock
CATEGORY
SUB CATEGORY
ITEM
#114378
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