original description
Liddle, R.A.; Palmer, K.V.W. (1941). The geology and paleontology of the Cuenca-Azógues-Biblian region, provinces of Cañar and Azay, Ecuador. Bulletins of American Paleontology, 26(100): 357-418, available online at https://biodiversitylibrary.org/page/10676879
page(s): 404, pl. 8, figs 1-5 [details]
source of synonymy
Nuttall, C. P. (1990). A review of the Tertiary non-marine molluscan faunas of the Pebasian and other inland basins of north-western South America. <em>Bulletin of The British Museum (Natural History), Geology Series.</em> 45(2): 165-371., available online at https://www.biodiversitylibrary.org/page/45474563
page(s): 271, 272 [details]
From editor or global species database
Type locality P. R. I. sta. No. 1038 (loc. 4 Liddle). From center of the Azogues anticline. 3 kms. north west of the town of Azogues, Province of Canar, Ecuador. [details]