Gastropoda - Neotaenioglossa - Calyptraeidae
Alternative spelling: Ianacus
Parent taxon: Crepidula according to J. A. Todd 2001
See also Oldroyd 1925
Sister taxa: Calyptraea (Crepidula) protea, Crepidula (Crepidula), Crepidula (Garnotia), Crepidula (Janacus), Crepidula (Spirocrypta), Crepidula adunca, Crepidula aeola, Crepidula aplysioides, Crepidula arenata, Crepidula bractea, Crepidula convexa, Crepidula cymbaeformis, Crepidula depressa, Crepidula deprima, Crepidula diminutiva, Crepidula dumosa, Crepidula excavata, Crepidula falconeri, Crepidula fornicata, Crepidula gatunensis, Crepidula gibbosa, Crepidula incurva, Crepidula iniquita, Crepidula lessonii, Crepidula lirata, Crepidula maculosa, Crepidula naticarum, Crepidula navicula, Crepidula nivea, Crepidula norrisiarum, Crepidula nummaria, Crepidula onyx, Crepidula pabloensis, Crepidula perforans, Crepidula plana, Crepidula praerupta, Crepidula princeps, Crepidula rostralis, Crepidula rugosa, Crepidula rugosa, Crepidula saugusensis, Crepidula sookensis, Crepidula tainohataensis, Crepidula ungana, Crepidula unguiformis
Subtaxa: none
Ecology: facultatively mobile epifaunal suspension feeder
Distribution: