Gastropoda - Sorbeoconcha - Rissoidae
Full reference: W. L. Effinger. 1938. The Gries Ranch Fauna (Oligocene) of Western Washington. Journal of Paleontology 12(4):355-390
Belongs to Turbella according to W. L. Effinger 1938
Sister taxa: Rissoa (Turbella), Rissoa alienocurta, Rissoa canariensis, Rissoa cooperi, Rissoa costulata, Rissoa dolium, Rissoa epulata, Rissoa federicoi, Rissoa kelseyi, Rissoa multicostata, Rissoa pakistanica, Rissoa parva, Rissoa poustagnacensis, Rissoa reticulata, Rissoa similis, Rissoa ventricosa, Turbella elegans, Turboella turbinata, Rissoa (Turboella) curticostata, Turboella costata, Rissoa (Turboella) obsoleta, Turboella crebricostata
Type specimen: UCMP 33557
Ecology: epifaunal grazer
Distribution: found only at UCMP 3607 - South bank of Cowlitz River at old Gries Ranch (Oligocene of Washington)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.