Diagnoza

The shell flanks are strongly bevelled, concave and covered with straight, somewhat opisthocline axial ribs (23–24 on the last coil). Their tips are visible above the seam and make it wavy. The outer edge area of ​​the base is concave and sculptured with slightly reinforced growth lines. This is followed by a slightly convex area, covered with approx. 12 spiral ribs of roughly equal strength. The central area is deepened and closed at the base by the widened inner lip. The growth lines run on the base strongly prosocline and opisthocyrt. The aperture is elongated rhomboidal.

Porównanie

Most similar Bajocian Trochus ornatissimus d'Orbigny, 1853 has a more convex base. Lamelliphorus heberti and L. rhombifer (Uhlig, 1881) do not have convex-concave flanks and axial and spiral ribs are less numerous.

Autekologia

Występowanie geograficzne

only in type locality.

Zasięg czasowy

Mid Jurassic

Materiały muzealne

3 specimens (NHMW 1867/0008/0005a-c).

Literatura

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 für Mineralogie und Petrographie, Geologie und Paläontologie, Anthropologie und Prähistorie, 193-288.

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