Name:
Dolorthoceras sociale
Age: Ordovician
Formation: Maquoketa Formation
Location: Graf, Iowa
Size: Plate is 7 inches tall
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This is a fabulous plate of Ordovician cephalopods from Iowa. These are Dolorthoceras sociale from the Maquoketa Formation. This specimen was acquired from an old collection. There are almost a dozen examples scattered about the plate. The slab displays beautifully, which is quite unusual for this site. This is a great multiple example of these straight cephalopods from Iowa.
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