Megastrophia (Protomegastrophia) Caster 1939

Strophomenata - Strophomenida - Strophodontidae

Alternative spelling: Brachyprion (Protomegastrophia)

Parent taxon: Megastrophia according to L. R. M. Cocks 1978

See also Jin and Chatterton 1997

Sister taxa: Megastrophia (Eomegastrophia), Megastrophia (Megastrophia), Megastrophia iddingsi, Megastrophia transitans

Subtaxa: Brachyprion (Protomegastrophia) profunda

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• Devonian of China (2 collections)

• Silurian of Canada (5: Northwest Territories, Quebec), the United Kingdom (1), United States (49: Illinois, Indiana, Iowa, New York, Wisconsin)

Total: 57 collections each including a single occurrence

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