The barchiopod antiquatonia coloradoensis (Girty) from the upper morrowan and atokan (Lower Middle Pennsylvanian) of the United States - Henry, Thomas W.; United States Gelogical Survey; United States Department of the interior (Washington, D.C. : United States Government Printing Office, 1998)
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Keywords: Brachiopoda, Fossil; Lamp shells -- paleozoology