Holotype ZPAL Ga.9/286 from the Valanginian (Early Cretaceous) of Wąwał in lateral and apical view.

Diagnoza

Protoconch not clearly demarcated from teleoconch. Shell broadly spindle-like, 1.51 as high as broad. Early whorls smooth apart from weak, posteriorly bent abapical folds. Three spiral striae on visible part of third whorl. Deepest and broadest stria situated close to very narrow ramp at adapical suture.Two weaker striae situated close to abapical suture. Additional striae visible at base. Teleoconch  whorls rounded. Peristome D-shaped. columellar area with narrow inner lip and wide umbilical chink.

Porównanie

Similar in shell shape to S. raresculpta Gründel, 1997 but differs with regard to the pattern of ornamention and the presence of an umbilical chink. S.pulloides (Hudleston, 1896) has a less distinctive ramp, more elongated shell shape, and no umbilical chink.

Autekologia

Występowanie geograficzne

Only in type locality.

Zasięg czasowy

Saynoceras verrucosum Zone, Late Valanginian (Early Jurassic)

Materiały muzealne

ZPAL: 2335 shells 

Literatura

Kaim, A. 2004. The evolution of conch ontogeny in Mesozoic open sea gastropods. Palaeontologia Polonica 62, 3–183.