Alternative combinations: Eosiphonalia (Strepsidura) oregonensis, Strepsidura oregonensis
Sister taxa: none
Type specimen: USNM 107395, a shell
• Oligocene of United States (6: Oregon collections)
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.