Fig. 415.

Phragmoceras ventricosum, J. Sow. (Orthoceras ventricosum, Stein.) Aymestry; 1/4 nat. size.

Fig. 416.

Lituites giganteus, J. Sow. Near Ludlow; also in the Aymestry and Wenlock limestones; 1/4 nat. size.

Fig. 417.