|Species||Partschiceras partschi (Stur)|
|Stage||Lower Sinemur Upper Hettangian|
The winding cross-section is highly oval, the body involute and the flanks slightly convex. The umbilical edge and the umbilical drop are tightly rounded. The inner coils are smooth, from about 35mm diameter undulations and ribs appear on the venter. These become longer with increasing diameter and soon cover the whole flank. The ribs run proradially and are slightly curved.
Very similar, especially in terms of ribbing, is Partschiceras bernardii, but this species has a much narrower umbilicus and strongly flattened flanks with very little wb.
Age: atanatense and subsalinarius horizon
* Description according to Kment (2021), supplemented
Dimensions with D= 53mm
Nw % v. D: ca. 13%
Wh % v. D: ca. 54%
Wb % v. D: — %
- 1882 Phylloceras Partschi STUR. – CANAVARI, p. 146.
- 2000 Dasyceras ex gr. gigas intermedia VADASZ. – KMENT, p. 190, pl. 1, fig. 3.
- 2021 Partschiceras partschi (STUR) – KMENT S. 265, Fig. 11.4-5