Alternative combination: Agasoma columbianum
Full reference: F. M. Anderson and B. Martin. 1914. Neocene record in the Temblor Basin, California, and Neocene deposits of the San Juan District, San Luis Obispo County. Proceedings of the California Academy of Sciences, Fourth Series 4(3):15-112
Type specimen: CAS 155, a shell
• Oligocene of United States (16: Oregon collections)
• Eocene of United States (2: California)
Total: 18 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.