H4 



PALEONTOLOGY 



FIG. 34. GASTROPODS. 



Pleurotomaria mosensis Buvignier, Upper Jurassic, (xjj.) (After 

 Buvignier). L.S. , Lateral slit, b, b' Bellerophon hitilcus J. de C. 

 Sowerby, Lower Carboniferous. (x.) (After de Koninck.) c, c' , 

 E-uomphalus pentangulatus J. Sowerby, Lower Carboniferous. ( X J.) 

 (After Goldfuss.) d, Trochus inornatus Buvignier, Upper Jurassic. 



