Genus Modiolarca J. E. Gray, 1843+ [1840]

(3-7-5-0-1-2-1-20-0-0-0-0-0)
[=Musculus P. F. Roding, 1798]
Ref. Abbott, 1974 p 432
Syn. Modiolacra Hutton, 1873
Ref. Vokes, 1980 p 25
[see as it applies to Subgenus (Ryenella) under Genus Musculus]

impacta (Hermann, 1782)
(3-7-5-0-1-2-1-20-0-1-0-0-0)
Impact Mussel
Ref. Abbott & Dance, 1982 p 298 c