New and little known middle Pennsylvanian gastropods from the Flechado Formation, Taos County, New Mexico
— Barry S. Kues

The Desmoinesian part of the Flechado Formation near the town of Talpa, Taos County, contains one of the most diverse late Paleozoic gastropod faunas in North America. Five relatively common species from this fauna are described. New taxa include Arribazona hesperia (a new genus and species of murchisoniid related to Cerithioides), Euconodoma gavinae (a new genus and species of microdomatid), and Strobeus poromus, new species. The other two species considered here, Pseudozygopleura? (Stephanozyga) subnodosa and Eucochlis perminuta, were originally established by Knight on the basis of specimens from the Desmoinesian of Missouri, but seldom have been reported subsequently.