386 



INFERIOR OOLITE AMMONITES. 



y. Inner lateral lobule in duplicate. 



Fig. 10. — Outline of L of Sonn. crassibullata. 



Sonn. crassibullata. (Pages 353 and 400.) 

 Sonn. in^equa. (Page 400.) 



8. Outer lateral lobule in duplicate. 



Fig. 11. — Outline of L of Sonn. crassiformis. 

 1. Lobes long and ornate. 



Sonn. crassiformis. (Pages 348 and 401.) 

 Sonn. nuda. (Pages 352 and 402.) 



2. Lobes somewhat short, not very ornate. 



Sonn. duplioata. (Page 402.) 

 Sonn. oamura. (Page 403.) 



II. The terminal lobule of L is intra-axial in the spinous 

 species, and generally anisosceloid. 



A. The lobes and lobules are short and broad-stemmed. 



Fig. 12. — Outline of L of Sonn. spinea. 



