This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
Corresponding author (Name, Year)
Pitar (Pitar) dalli
Ref.: C. E. Weaver. 1942. Paleontology of the Marine Tertiary formations of Oregon and Washington. University of Washington Publications in Geology 5:1-789
Ref.: E. J. Moore. 1976. Oligocene marine mollusks from the Pittsburg Bluff Formation in Oregon. United States Geological Survey Professional Paper 922:1-66