Specimen MZ VIII Mg 4231/3 from the Late Callovian (Mid Jurassic) of Łuków (block in glacial drift); lateral and apical view.

Diagnoza

Shell elongate, three times as high as broad. Suture incised. Ornament consists of two sharp, granulated spiral cords, and about 8–9 straight axial ribs, together forming distinct net of elongate meshes with distinct tubercles at intersections.

Porównanie

Resembles C. armata and C. quenstedti but differs from them in having only two sharp spiral cords.

Autekologia

Występowanie geograficzne

Europe; in Poland Łuków (block in glacial drift) and Ogrodzieniec (Częstochowa region).

Zasięg czasowy

Mid to Late Jurassic; in Poland Late Callovian and Bathonian (Mid Jurassic).
 

Materiały muzealne

Many specimens from Łuków and only five specimens from Ogrodzieniec.

Literatura

Brösamlen, R. 1909. Beitrag zur Kenntnis der Gastropoden des schwäbischen Jura. Palaeontographica 56, 177–321.

Buch, L., de 1831. Recueil de Planches de Pétrification remarquables. no pagination. Académie Royale des Sciences, Berlin.

Gründel, J. 1974b. Gastropoden aus dem Dogger. II. Procerithiidae. Zeitschrift für Geologische Wissenschaften 2, 831–851.

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