Fossil Gastropod (Cyclonema) Ordovician - Ohio

This is a nicely preserved gastropod of the genus Cyclonema from the Late Ordovician, Arnheim Formation of Ohio. Mollusc shells are typically composed of a phosphatic substance called Aragonite. Unfortunately Aragonite does not preserve well in the Cincinnatian, so most gastropod fossils are internal molds, unlike this specimen.
DETAILS
SPECIES
Cyclonema sp.
LOCATION
Mt. Orab, Ohio
FORMATION
Arnheim Formation
SIZE
.7" long
CATEGORY
ITEM
#11479
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