A deep water patellogastropod from oligocene water-logged wood of Washington State, USA (Acmaeoidea: Pectinodonta)
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Late Oligocene concretions from the shores of the Strait of Juan de Fuca, Washington State, USA contain limpets that represent the earliest record of the taxon Pectinodonta. Assignment of these specimens to this taxon is based on scanning electron microscopy o... ...
