Diagnoza

Shell elongate, 1.6 times as high as broad. Protoconch hyperstrophic, diverging about 120° from teleoconch axis, ornamented by adapical and abapical axial folds. Teleoconch starting with two prominent and one subsutural spiral rib. Whorls angulated at medial spiral rib. Spiral ribs crossed by weaker, orthocline axial ribs (about 25–26 per whorl).

Porównanie

Differs from the other promathildids by its orthocline, more distantly spaced axial ribs.

Autekologia

Występowanie geograficzne

Only in type locality.

Zasięg czasowy

Valanginian (Early Cretaceous).

Materiały muzealne

333 shells.

Literatura

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

Schröder, M. 1995. Frühontogenetische Schalen jurassicher und unterkretazischer  Gastropoden  aus  Norddeutschland  und Polen. Palaeontographica, Abteilung A238, 1–95.