†Acmaea mitra sookensis Clark and Arnold 1923 (limpet)
Gastropoda - Patellida - Lottiidae
Alternative combination: Acmaea sookensis
Full reference: B. L. Clark and R. Arnold. 1923. Fauna of the Sooke Formation Vancouver Island. University of California Publications, Bulletin of the Department of Geological Sciences 14(5):123-234
Belongs to Acmaea mitra according to C. E. Weaver 1942
See also Durham 1944
Sister taxa: none
Type specimen: UCMP IP30071, a shell
Ecology: facultatively mobile epifaunal grazer
Distribution: found only at Woodmans Wharf (Eocene of Washington)