Alternative combination: Larus oregonus
Full reference: R. W. Shufeldt. 1891. Fossil birds from the Equus Beds of Oregon. American Naturalist 25:818-821
Type specimen: Its type locality is Silver Lake, which is in a Pleistocene terrestrial horizon in Oregon
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.