Gastropoda - Calyptraeoidea - Calyptraeidae

Alternative spelling: Janacus

Parent taxon: Crepidula according to H. Moths et al. 2010

Sister taxa: Calyptraea (Crepidula) protea, Crepidula (Crepidula), Crepidula (Ianacus), Crepidula (Siphopatella), Crepidula adunca, Crepidula aeola, Crepidula aplysioides, Crepidula convexa, Crepidula cymbaeformis, Crepidula depressa, Crepidula deprima, Crepidula diminutiva, Crepidula dumosa, Crepidula falconeri, Crepidula fornicata, Crepidula gatunensis, Crepidula iniquita, Crepidula lingulata, Crepidula lirata, Crepidula maculosa, Crepidula navicula, Crepidula nivea, Crepidula norrisianum, Crepidula onyx, Crepidula parisiensis, Crepidula plana, Crepidula praerupta, Crepidula princeps, Crepidula ungana

Subtaxa: Crepidula (Janacus) crepidula

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Ecology: facultatively mobile epifaunal suspension feeder