Gastropoda - Euomphalina - Euomphalidae

Full reference: T. E. Yancey. 1969. A molluscan faunal assemblages from the Arcturus Formation, Nevada. PaleoBios 8:1-20

Belongs to Straparollus according to T. E. Yancey 1969

Sister taxa: Euomphalus (Straparollus) exiguus, Straparollus (Philoxene), Straparollus (Straparollus), Straparollus acuminatus, Straparollus aequalis, Straparollus ammon, Straparollus ammonitiformis, Straparollus ater, Straparollus bicavatus, Straparollus brevis, Straparollus calyx, Straparollus clymenioides, Straparollus complanans, Straparollus daphne, Straparollus davidi, Straparollus devonoaltus, Straparollus dionysii, Straparollus expectans, Straparollus filifora, Straparollus fragilis, Straparollus franciscae, Straparollus hecale, Straparollus heliciformis, Straparollus hippolyta, Straparollus honoratus, Straparollus incongruens, Straparollus ineptus, Straparollus inops, Straparollus kokeni, Straparollus leptoni, Straparollus levigatus, Straparollus lonemountainensis, Straparollus macromphalus, Straparollus magnus, Straparollus marylandicus, Straparollus multispina, Straparollus paullulus, Straparollus perlongus, Straparollus planodiscus, Straparollus planorbiformis, Straparollus planus, Straparollus portlandensis, Straparollus quadrivolvis, Straparollus rudis, Straparollus spergenensis, Straparollus turritus, Straparollus ultimus, Straparollus vermis, Straparollus volnovachensis, Straparolus australis, Straparolus subdionysii

Type specimen: UCMP 10113

Ecology: stationary epifaunal suspension feeder