Diagnoza

The shell is moderately slim, initially has slightly convex, later straight flanks. The seams are emphasized by a narrow heel on the following coil. The flanks are densely covered with spiral furrows consisting of small pits (at least 20 from seam to seam).The base is convex. The growth lines are almost straight and orthocline on the flanks, prosocyrt on the base. The teardrop-shaped aperture is adapically sharply pointed, abapically rounded.

Porównanie

Melania lineata Sowerby, 1818 has a slimmer shell, the coils are higher in relation to their width, a clear concavity is formed under the seam. Pseudomelania sp. 1 is also slimmer, the base is set off from the base at early coils by an edge, the lateral lines of later coils are circa concave and the pit sculpture is missing.

Autekologia

Występowanie geograficzne

France and Poland (Balin only).

Zasięg czasowy

Mid Jurassic.

Materiały muzealne

Material from France and 2 specimens from Balin (NHMW 1853/0038/0096a, b)

Literatura

Cossmann, M. 1909. Essais de paleoconchologie comparée, vol. 8. 248 pp. F.R. de Rudeval, Paris.

Gründel, J. 2012. Neubearbeitung der von Laube 1867 beschriebenen Gastropoden fauna aus dem mittleren Jura von Balin/Polen. Annalen des Naturhistorischen Museums in Wien. Serie A, 114, 193–288.

Laube, G. C. 1867. Die Gastropoden des braunen Jura von Balin. Denkschriften der kaiserlichen Akademie der Wissenschaften, 28, 1–28.