2.7" Ordovician Oncoceratid Fossil - Illinois

Ordovician Oncoceratid Fossil - Illinois #219253

This is a 2.7" long example of a Middle Ordovician fossil Oncoceratid from Illinois. It was recovered from the Platteville group near Dixon, Illinois. This specimen was purchased from a collection which makes further identification difficult.

Oncoceratids are curved nautiloid cephalopods that have been identified from the Middle Ordovician up to the Late Silurian. Richardsonoceras is known for having a stronger convex curvature than other cephalopods in the family Oncoceratidae.

SPECIES

Oncoceras sp.

AGE

Middle Ordovician

LOCATION

Dixon, Illinois

FORMATION

Platteville Group

SIZE

Fossil: 2.7" long

2.7" Ordovician Oncoceratid Fossil - Illinois

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