Rocky Mountain ridged mussel (Gonidea angulata) management plan: Appendix 1
Appendix 1: Species Similar to the Rocky Mountain Ridged Mussel
California Floater shell, similar in size and shape to the Rocky Mountain Ridged Mussel but lacking the lateral ridge running parallel to the anterior margin of the shell. Photo J. Heron.
Western Floater has a less prominent lateral line, and a smooth thin shell. Photo J. Heron.
Note the concavity of the outer edge of the shell, (more prominent in older specimens). These specimens are from Ashton creek east of Enderby and north of Armstrong, B.C. Photo L. Gelling.
Note the purplish nacre and the large pseudocardial teeth. Photo J. Heron.
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