Fig. 320.
Ceratites nodosus. Muschelkalk.
- a. Side view.
- b. Front view.
- c. Partially denticulated outline of the septa dividing the chambers.
Fig. 321.
Posidonia minuta, Goldf. (Posidonomya minuta, Bronn.)
Fig. 322.
Fig. 320.
Ceratites nodosus. Muschelkalk.
Fig. 321.
Posidonia minuta, Goldf. (Posidonomya minuta, Bronn.)
Fig. 322.