†Biddulphia semicircularis Brightwel 1853
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Alternative combination: Triceratium semicirculare
Belongs to Biddulphia according to G. Andrews 1976
Sister taxa: Biddulphia aurita, Biddulphia tuomeyi
Distribution: found only at Calvert Cliffs Nuclear Power Plant, Zone 17 (Miocene of Maryland)
Specimen images are retrieved through the ePANDDA API.
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