Full reference: W.O. Addicott. 1976. Molluscan paleontology of the lower Miocene Clallam Formation, northwestern Washington. United States Geological Survey Professional Paper 976:1-44
Sister taxa: none
Type specimen: USNM 215992
Ecology: epifaunal carnivore
• Miocene of United States (2: Washington collections)
• Oligocene of United States (4: Washington)
Total: 6 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.