INFERIOR OOLITE OF DORSET AND SOMERSET. 



65 



Fig. 6. — Termination of Ammonites Humphriesianus, Sow. 



a. From the side. b. From the front. 



13. A. Moorei, Lycett, < The Cotteswold Hills,' pi. i. figs. 2, 7. 



The flexure of the mouth of the shell, with its elegantly curved 

 line, like that of a modern Nautilus, is distinctive of this shell. It 

 is common to the sandy part of our Oolite below the usual Cepha- 

 lopoda-bed. The mouth is simply a termination of a flat slightly 

 ribbed shell, without any previous depression. It is a common 

 shell in the limestone bands below the Cephalopoda-bed ; but the 

 specimen sent is the only oue in which we have observed the com- 

 pletion of the mouth of the shell. 



Fig. 7. — Termination of Ammonites Moorei, Lycett. 



