48 



BLANFORD : GEOLOGY OF WESTERN SIND. 



Palaeontology. 



The most characteristic fossils of the Khirthar group are Nummulites 

 and Alveolina; neither the genera, nor, as a rule, 

 the species, are peculiar, but the extraordinary- 

 abundance of individuals renders it usually easy to recognise even small 

 fragments of the rock by the organisms preserved in it. The following 

 is a list of the^commonest or most important fossils : — 



Gastebopoda. 



Ovulum murchisoni, and other species. 

 Cerithium cf . giganteum. 



Nerita schmideliana. 



Pholadomya halaensis. 

 Corhula subexarata. 

 Cardita mutabilis. 

 C. subcomplanata. 

 Lucina gigantea. 



Brissopsis scutiformis. 

 B. sowerbyi ? 

 Schizaster, sp. 

 Eupatagus avellana, 

 Fibularia, sp. 



Orbitolites pedunculata. 

 Orbitoides dispansa. 

 Patellina cooki. 

 Alveolina ovoidea. 

 A. spheroidea. 

 Nummulites obtusa. 



Lamellibeanchiata. 



Astarte hyderabadensis . 

 Crassatella sindensis. 

 C. halaensis. 

 Vulsella legumen. 



Ostrea vesicularis, var. (0. globosa, 

 Sow.; 



ECHINODEBMATA. 



Amblypygus, sp. 

 Conoclypeus pulvinatus. 

 Eurhodia calderi. 

 Echinolampas discoideus. 

 E. sindensis. 



FoBAMINIFEEA. 



Nummulites ramondi. 

 N. biaritzensis. 

 N. beaumonti. 

 N. vicaryi. 

 N. granulosa. 

 N. leymeriei. 



Many of the species named, and the foraminifera especially, are 

 characteristically eocene, and there can be no question that the num. 

 mulitic limestone of India is a continuation of the same formation in 

 Europe. Several species pass from the Ranikot beds into the Khirthar 

 group ; indeed the principal pabeontological differences between the two 

 ( 48 ) 



