Key:  Family Glycymerididae

Phylum Mollusca
    Class Bivalvia
        Subclass Pteriomorphia

Taken primarily from  Kozloff, 1987, 1996 p. 269 (Copyright 1987, 1996, University of Washington Press.  Used in this web page by permission of University of Washington Press)
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1a  Radial ribs obvious, even if rather faint (they are least likely to be visible in small specimens); hinge with about 15 or 16 teeth, the anterior and posterior sets decidedly separated; periostracum thick, dark brown; subtidal species (Glycymeris (Axinola) subobsoleta in original key) Glycymeris septentrionalis
1b Radial ribs so faint that they are not likely to be visible without magnification; hinge with about 20 teeth, the anterior and posterior sets close together; periostracum thin, tan; rare Glycymeris (Axinola) corteziana

Taxonomic Levels Represented in This Key:

  Glycymeris septentrionalis

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Salish Sea Invertebrates web site provided courtesy of Walla Walla University