PLATE 14 



Platyceras leboutillieri nov. 



Page 145 



I, 2 Two views of the same specimen 



Grande Greve limestone. Perce Rock 

 3, 4 A silica replacement 



Grande Greve limestone ; division 2. Grande Greve 



Platyceras sp. 



Page 148 



5, 6 Dorsal and side views 



Grande Greve limestone ; division 2. Grande Greve 



Platyceras sp. 



Page 148 



7, 16 Grande Grhve limestone. Perce Rock 



. Platyceras cf. fornicatum Hall 



Page 145 



8, 9 Dorsal and side views 



Grande Greve limestonz ; division 2. Grande Greve 



Platyceras cf. nodosum Conrad 



Page 146 



10, 1 1 Side and dorsal views 



Grande Greve limestone ; division 2. Grande Greve 



Platyceras lejeunii nov. 



Page 147 



12 Dorsal view showing the spines and sculpture of the surface, x i^ 

 Grande Grlve limestone ; division 2. Grande Greve 



Platyceras paxilHfer nov. 



Page 146 



13, 14 Two views showing the smooth sparsely spinose surface, x 3 



Grande Greve limestone ; division 2. Grande Grev^ 



280 



