2 NOETLING: MARINE FOSSILS FROM MIOCENE, UPPER BURMA* 



strata at Minbu. Now, as we know that the oil-bearing strata are 

 above the beds with Velates schtnideliana, Chemn. sp. 1 which are 

 correlative to the Khirthar group in Western India, we must be 

 able to fix the age of the oil-bearing strata, if we succeed in deter- 

 mining with some accuracy the age of the fauna immediately above it. 

 For this purpose the marine fauna from Yenangyat and Minbu would 

 afford valuable support, without anticipating in any way the results 

 of a description of the large collections above mentioned. 



On the following pages altogether 69 species have been described, 

 which have been partly collected at Minbu and partly at Yenangyat ; 

 only two come from Yenangyoung. The fauna consists of 2 species 

 of Corals^ 14 species of Pelecypoda, 45 species of Gastropoda, 

 3 species of Crustacea and 5 species of Pisces, The Gastropoda 

 therefore exceed the other classes by a considerable number of 

 species. On the whole the character of the fauna is that of one living 

 in shallow water near a sandy beach. 



Out of a total of 69 species, 51 have specifically been determined, 

 while from the balance of 18, with some probability, 2 could be 

 referred to species already known, but of 16 the genus only could 

 be determined. 



For the purposes above mentioned, only the 51 specifically deter- 

 mined species can be made use of ; now out of these the following 23 

 species are new:— 



1. Nueula alcocki spec. nov. 13. Sigaretus bicostatus spec. nov. 



2. Astarte (?) dubia „ „ J4< Cassis d'archiaci 



3. Batissa craw/urdi „ „ l5 , Cassidaria dubia 



4. „ petrolei „ „ tf, ff minbuensis 



5. Tellina hilli „ „ j 7 . Ficula theobaldi 



6. „ kingi „ „ 18. Triton partialis 



7. Trockus buddha „ „ 19. Fasciolariafeddeni 

 8- n blanfordi ,, ,, 2 0. Murex arrakanesis 

 9. Discohelix minuta „ „ 2I . Voharia b i rmanica 



10. ScaUria birmanica- „ „ 22# pieurotoma irravadica 



11. „ irregularis „ „ 23 . „ yenanensis 



9* 



II 



II 



II 



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11 



• I 



i» 



II 



II 



12. Calypiraa rugosa 



11 



1 Records of the Geological Survey of India, vol. xxvii, page 101 



{ 2 ) 



