Actinoceras gradatum Flower 1957 (mollusk)

Cephalopoda - Actinocerida - Actinoceratidae

Full reference: R. H. Flower. 1957. The Ordovician Development of the Actinoceratida, with notes on Actinoceroid Morphology and Ordovician Stratigraphy. State Bureau of Mines and Mineral Resources New Mexico Institute of Mining and Technology, Memoir 2:1-59

Belongs to Actinoceras according to R. H. Flower 1957

Sister taxa: Actinoceras abortivum, Actinoceras aequale, Actinoceras altopontense, Actinoceras anticostiense, Actinoceras arcuanotum, Actinoceras carletonense, Actinoceras curdsvillense, Actinoceras huronioides, Actinoceras incantatum, Actinoceras insulaenigrae, Actinoceras kentuckiense, Actinoceras lambei, Actinoceras lesperancei, Actinoceras margaretae, Actinoceras mutabile, Actinoceras sinclairi, Actinoceras winstoni

Ecology: nektobenthic carnivore

Distribution:

• Ordovician of Canada (4: Newfoundland and Labrador, Ontario collections)

Total: 4 collections each including a single occurrence

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