2.3" Ordovician, Cephalopod (Allumettoceras) Fossil - Wisconsin

This is a 2.3" long example of Allumettoceras planodorsatum. This fossil is part of a collection from the Grand Detour Formation in Rock County, Wisconsin. Allumettoceras was an oncoceran, a curve-shelled nautiloid cephalopod. This specimen is a partial shell.
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DETAILS
SPECIES
Allumettoceras planodorsatum
LOCATION
Rock County, Wisconsin
FORMATION
Grand Detour Formation
SIZE
2.3" long
ITEM
#221311
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