G. C. Crick — Ce])halopods from N.W. Indian Frontier. 491 



the rock a huge branching coral which it was quite impossible for 

 him to extract. 



Although the fossils are very frag- 

 mentary and difficult satisfactorily to 

 determine, they are of great importance 

 as showing the Mesozoic age of the rocks 

 forming the core of the anticlinal between 

 Miram Shah and Idak. 



The Belemnite (see Text - figure 1, 

 p. 492) is partially imbedded in a light 

 greenish -grey, in places buff- coloured 

 limestone, and its exposed surface has 

 been very much weathered. It was found 

 in situ at a spot which Lieut.-Colonel 

 Skinner describes as " E. of Miram Shah, 

 halfway to Idak," and which is marked d 

 on the section reproduced herewith. The 

 specimen is about 47 mm. long, but has 

 been broken across, and the two parts, 

 20 and 27 mm. long respectively, have 

 been so dislocated that they are now some 

 5 or 6 mm. apart. The smaller fragment t^. 



is part of the alveolar end, a portion of the 

 alveolus being preserved. The exposed 

 surface of the fossil is ventral. The 

 ventral surface of the alveolar portion of 

 the guard appears to have been provided 

 with a median groove, but precisely how 

 far this extended backward cannot be 

 ascertained on account of the eroded state 

 of the fossil ; it was probably confined to 

 the alveolar region. The guard, as now 

 preserved, is nearly circular in cross- 

 section, its dorso - ventral and transverse 

 diameters being each about 9 mm. ; 

 allowing for the erosion of the ventral V A 



surface, the guard seems originally to 

 have been a little compressed and nearly 

 cylindrical or possibly a little fusiform. 

 Unfortunately the posterior part of the 

 guard is wanting. The specimen is also 

 so much eroded that a definite determina- 

 tion is quite impossible. 



The fragment of an Ammonoid (see Text- 

 figs. 2a-d, p. 492) consists of the posterior 

 part of the body - chamber. Lieut. -Col. 

 Skinner's note respecting it is as follows : — 

 " Derived, found in the Alveolina lime- 

 stone at Miram Shah, E. of Dandi plain." 

 It was found in the debris in the 



t 



