original description
Woodring, W. P. (1973). Geology and paleontology of the Canal Zone and adjacent parts of Panama: description of Tertiary mollusks (additions to gastropods, scaphopods, pelecypods: Nuculidae to Malleidae). <em>United States Geological Survey Professional Paper.</em> 306-E: 453-539., available online at https://pubs.usgs.gov/pp/0306e/report.pdf
page(s): 469, pl. 68, figs 1-4 [details]
From editor or global species database
Type locality Locality 23b (USGS 24553), upper course of Rio Palenque, 3.4 km in direct line west of Nuevo San Juan and 1.3 km northwest of settlement of Palenque, Colón, Panama; Gatuncillo Formation, late Eocene [details]