Classification of White 1879
G. †Meekoceras Hyatt 1879
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†Meekoceras aplanatum White 1879
†Meekoceras gracilitatis White 1879
†Meekoceras mushbachanum White 1879
†Meekoceras mushbachanus White 1879
G. †Aviculopecten M'Coy 1851
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†Aviculopecten altus White 1879
†Aviculopecten idahoensis Meek 1871
†Aviculopecten pealei White 1879