Gastropoda - Architaenioglossa - Ampullinidae

Full reference: B. L. Clark and J. W. Durham. 1946. Eocene Faunas from the Department of Bolivar, Colombia. Geological Society of America Memoir 16:1-126

Belongs to Pseudocrommium according to B. L. Clark and J. W. Durham 1946

Sister taxa: Amaurellina (Pachycrommium) fahmii, Amaurellina (Pachycrommium) moradi, Pachycrommium carmenensis, Pachycrommium clarki, Pachycrommium dalli, Pachycrommium eburnoides, Pachycrommium harrisi, Pachycrommium indicum, Pachycrommium martini, Pachycrommium nagaoi, Pachycrommium oweni, Pachycrommium saginata

Type specimen: CAS34979, a shell. Its type locality is UC S60, which is in the Eocene of sandstone/conglomerate Colombia.

Ecology: epifaunal grazer

Average measurements (in mm): shell 42.5 x 22.4