Subgenus (Petricolaria) F. Stoliczka, 1870

(3-4-4-0-26-4-1-15-8-0-0-0-0)
Ref. Abbott, 1974 p 535
Bernard, 1983 p 57 Keen, 1971 p 197
Lindner, 1977 p 116
Syn. (Gastranella) A. E. Verrill, 1872
Ref. Vaught, 1989 p 137
[see also as Genus]

amygdalina G. B. Sowerby, 1834
(3-4-4-0-26-4-1-15-8-1-0-0-0)
Syn. Petricola (Petricola) amygdalina G. B. Sowerby, 1834
Ref. Bernard, 1983 p 57

californiensis H. A. Pilsbry & H. N. Lowe, 1933
(3-4-4-0-26-4-1-15-8-2-0-0-0)
California Petricola
Ref. Amer. Fish. Soc., 1988 p 45
Syn. Petricola (Petricola) denticulata authors [not G. B. Sowerby, 1834]
Ref. Bernard, 1983 p 57

cognata C. B. Adams, 1852
(3-4-4-0-26-4-1-15-8-3-0-0-0)
Ref. Keen, 1971 p 197 bw

concinna G. B. Sowerby, 1834
(3-4-4-0-26-4-1-15-8-4-0-0-0)
Ref. Keen, 1971 p 199 bw
Syn. Petrocola (Petricola) concinna G. B. Sowerby, 1834
Ref. Bernard, 1983 p 57

gracilis G. P. Deshayes, 1853
(3-4-4-0-26-4-1-15-8-5-0-0-0)
Syn. Petricola (Petricola) gracilis G. P. Deshayes, 1853;
Petricola (Petricola) parallela H. A. Pilsbry & H. N. Lowe, 1932
Ref. Bernard, 1983 p 57

parallela H. A. Pilsbry & H. N. Lowe, 1932
(3-4-4-0-26-4-1-15-8-6-0-0-0)
Parallel Petricola
Ref. Abbott, 1974 p 535
Abbott & Dance, 1982 p 369 c
Keen, 1971 p 199 bw

pholadiformis (J. B. P. A. de Lamarck, 1818) [T]
(3-4-4-0-26-4-1-15-8-7-0-0-0)
American Piddock, False Angel Wing, False Angelwing
Ref. Abbott & Dance, 1982 p 368 c
Amer. Fish. Soc., 1988 p 45
Lindner, 1977 pl 61 c
Syn. Gastronella tumida A. E. Verrill, 1872
Ref. Abbott, 1974 p 535 bw
Syn. Petricola (Petricola) pholadiformis J. B. P. A. de Lamarck, 1818
Ref. Bernard, 1983 p 57

Form lata W. H. Dall, 1925
(3-4-4-0-26-4-1-15-8-7-0-1-0)
Ref. Abbott, 1974 p 535

rugosa G. B. Sowerby, 1834
(3-4-4-0-26-4-1-15-8-8-0-0-0)
Syn. Mytilus niveus authors [not J. H. Chemnitz, 1785];
Petricola (Petricola) chicloensis R. A. Philippi, 1845;
Petricola (Petricola) rhyssodes R. A. Philippi, 1887;
Petricola (Petricola) rugosa G. B. Sowerby, 1834;
Petricola (Petricola) tenuis G. B. Sowerby, 1834
Ref. Bernard, 1983 p 57