Gastropoda - Euomphalina - Euomphalidae
Full reference: J. D. Mount. 1973. A new species of Straparollus (Archaeogastropoda) from the Mississippian of Nevada. Bulletin of the Southern California Academy of Sciences 72(2):111-112
Belongs to Straparollus (Euomphalus) according to M., Jr. Gordon and E. L. Yochelson 1983
Sister taxa: Euomphalus (Schizostoma), Euomphalus acuticosta, Euomphalus acutus, Euomphalus altus, Euomphalus angularis, Euomphalus anticostiensis, Euomphalus araneifer, Euomphalus archiaci, Euomphalus articulatus, Euomphalus basinodosus, Euomphalus biarmatus, Euomphalus bundtzeni, Euomphalus cassianus, Euomphalus catilliformis, Euomphalus catillus, Euomphalus cera, Euomphalus conradi, Euomphalus cornudanus, Euomphalus crotalostomus, Euomphalus dentatus, Euomphalus dissoluta, Euomphalus eurekensis, Euomphalus fairchildi, Euomphalus fenestralis, Euomphalus helicinus, Euomphalus illinoisensis, Euomphalus kaibabensis, Euomphalus latus, Euomphalus lineatus, Euomphalus mapingensis, Euomphalus minimus, Euomphalus minor, Euomphalus mohri, Euomphalus mongolicus, Euomphalus neapolitanus, Euomphalus nitidulus, Euomphalus nodulosus, Euomphalus oldhami, Euomphalus patulus, Euomphalus pentangulatus, Euomphalus perspectivus, Euomphalus perversus, Euomphalus planodorsatus, Euomphalus planorbis, Euomphalus plummeri, Euomphalus radiatus, Euomphalus rotundus, Euomphalus schnurii, Euomphalus serratus, Euomphalus similis, Euomphalus simuloides, Euomphalus sinister, Euomphalus studeri, Euomphalus subtrigonalis, Euomphalus sulcatus, Euomphalus telleri, Euomphalus tenuistriatus, Euomphalus trigonalis, Euomphalus triliris, Euomphalus tuberculatus, Euomphalus utahensis, Euomphalus venustus, Euomphalus verneuili, Straparollus (Euomphalus) alaskensis, Straparollus (Euomphalus) asanoi, Straparollus (Euomphalus) brooksensis, Straparollus (Euomphalus) carbonarius, Straparollus (Euomphalus) elegans, Straparollus (Euomphalus) equalis, Straparollus (Euomphalus) glabribasis, Straparollus (Euomphalus) konobasis, Straparollus (Euomphalus) levicarinatus, Straparollus (Euomphalus) marginatiformis, Straparollus (Euomphalus) parvulus, Straparollus (Euomphalus) parvus, Straparollus (Euomphalus) pernodosus, Straparollus (Euomphalus) pugilis, Straparollus (Euomphalus) qingyanensis, Straparollus (Euomphalus) subplanus, Straparollus (Euomphalus) sumatrensis, Straparollus (Euomphalus) uedai, Straparollus (Euomphalus) umbilicatus, Straparollus (Euomphalus) variabilis, Phymatifer coroniferus, Phymatifer peruvianus, Paromphalus rotundus, Schizostoma africanum, Schizostoma fasciatum, Euomphalus (Schizostoma) cirridioides, Schizostoma costata
Type specimen: 7101/1, a shell. Its type locality is UCR locality 7101. on crest of ridge extending west from first hill north of hill 7865, which is in a Chesterian carbonate limestone in the Moleen Formation of Nevada.
Ecology: stationary epifaunal suspension feeder
Average measurements (in mm): shell 7.80 x 20.80