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Nautilida

Nautilida

Phylum: Mollusca
Class: Cephalopoda
Order: Nautilida

Families of Nautilida present in the Pennsylvanian of the American Midcontinent

Ephippoceratidae

Ephippoceratidae

Grypoceratidae

Grypoceratidae

Koninckioceratidae

Koninckioceratidae

Liroceratidae

Liroceratidae

Solenochilidae

Solenochilidae

Tainoceratidae

Tainoceratidae

Trigonoceratidae

Trigonoceratidae