Diagnoza

Micromorphic gastropod with adult shell height of about 1.4 mm. Protoconch 2 high-spired with three whorls. Demarcation between protoconch and teleoconch clearly visible with large apertural projection of outer lip. Teleoconch possessing four whorls with broad axial ribs. Ribs on the third whorl ornamented with two blunt nodes on the adapical and abapical rib parts.

Porównanie

The protoconch is most similar to protoconchs of procerithiids with short planktotrophic development (e.g. Xystrella sp. from Wąwał). The two spiral ribs on the protoconch are typical for procerithiid gastropods. In the loosely coiled whorls are similar to vermetid gastropod. Possibly represents an early stage in vermetid evolution.

Autekologia

Występowanie geograficzne

Only in type locality
Zasięg czasowy
Materiały muzealne

Zasięg czasowy

Early Valanginian (Early Cretaceous).

Materiały muzealne

ZPAL: 199 shells.

Literatura

Kaim, A. 2001. Faunal dynamics of juvenile gastropods and associated organisms across the Valanginian transgression-regression cycle in central Poland. Cretaceous Research 22, 333‒351.

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