This extinct species was only found in strata of Bartonian coastal sandstone of the Talara Formation (Peru); age range: 40.4 to 37.2 Ma
References
A. A. Olsson. 1930. Contributions to the Tertiary Paleontology of Northern Peru: Part 3, Eocene Mollusca. Bulletins of American Paleontology 17(62):1âÂÂ164