Holotype: NHMW 1867/0008/0044 (original illustration from laube 1864, plate 1, fig. 2) from Mid Jurassic of Balin in dorsal and lateral view.

Diagnoza

The shell is broad oval, both ends are rounded almost equally wide. The apex is only slightly in front of the center. The slope from it to both ends is almost straight, slightly steeper forward than backward. Shell is evenly and densely covered with just over 100 radial ribs. They are narrow near the apex, becoming wider and wider towards the apex, and eventually, like a ribbon, separated by narrow furrows. Numerous concentric lines of growths cross the axial ribs and are slightly strengthened on them, suggesting the presence of a hump.

Porównanie

The nearly identical Bathonian Patella aureliana Cossmann, 1900 is slightly taller and the front is narrower than the back. Other similar species such as Patella rugosa Eudes Deslongchamps, 1843, Patella olinensis Cossmann, 1885, Scurriopsis anglica Haber, 1932, and Acmaea bathonica Cox & Arkell, 1950, have a more oval-shaped housing, among others.

Autekologia

Występowanie geograficzne

Balin (Poland); it may also be present in France.

Zasięg czasowy

Mid Jurassic.

Materiały muzealne

Only holotype (NHMW).

Literatura

Cossmann, M. 1900. Note sur les gastropodes du gisement Bathonien de Saint-Gaulthier (Indre). Bulletin de la Société géologique de France (3), 27, 543–585.

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.