Subgenus (Tridonta) C. F. Schumacher, 1817

(3-4-4-0-10-1-1-66-3-0-0-0-0)

alaskensis (W. H. Dall, 1903)
(3-4-4-0-10-1-1-66-3-1-0-0-0)
Alaska Tridonta
Ref. Amer. Fish. Soc., 1988 p 39

arctica (J. E. Gray, 1824)
(3-4-4-0-10-1-1-66-3-2-0-0-0)
Arctic Tridonta
Ref. Amer. Fish. Soc., 1988 p 39

bennettii (W. H. Dall, 1903)
(3-4-4-0-10-1-1-66-3-3-0-0-0)
Bennett Tridonta
Ref. Amer. Fish. Soc., 1988 p 39

borealis C. F. Schumacher, 1817
(3-4-4-0-10-1-1-66-3-4-0-0-0)
Boreal Tridonta
Ref. Amer. Fish. Soc., 1988 p 39
[=Astarte (Tridonta) borealis (C. F. Schumacher, 1817)]
Ref. Wagner, 1984 p 63

filatovae (T. Habe, 1964)
(3-4-4-0-10-1-1-66-3-5-0-0-0)
Filatova Tridonta
Ref. Amer. Fish. Soc., 1988 p 39

montagui (L. W. Dillwyn, 1817)
(3-4-4-0-10-1-1-66-3-6-0-0-0)
Montagu Tridonta
Ref. Amer. Fish. Soc., 1988 p 39

rollandi (M. Bernardi, 1859)
(3-4-4-0-10-1-1-66-3-7-0-0-0)
Rolland Tridonta
Ref. Amer. Fish. Soc., 1988 p 39

vernicosa (W. H. Dall, 1903)
(3-4-4-0-10-1-1-66-3-8-0-0-0)
Varnished Tridonta
Ref. Amer. Fish. Soc., 1988 p 39