﻿Vol. 64.] GEOLOGY OF BFRMA. 609 



Mart., with a doubtful specimen of Conus protofurvas^ Noetl. ; while, 

 from a corresponding position on the north side of the axis, in 

 a similar sandstone were obtained : — Area Burnesi, Ncetl., var. 

 media^ Conus scalaris. Mart., and a fragment of a large Area like 

 A. yawensis, Noetl. The assemblage of fossils and the lithological 

 character of the matrix point to the identity of this horizon with 

 that of Parallelipipedum prototortuosum, Noetl., at Kama.^ The 

 dip of the strata passed over between Banbyin and Peikadin, the 

 locality of the Area, varied from 10° to over 45°, so that the thick- 

 ness of clays between the two zones works out at not less than 

 1700 feet, in place of the 500 feet referred to by Dr. Noetling as 

 probably under the mark."^ 



(b) Thayetmyo and Minbu Districts. 

 (Map, %. 2, p. 610.) 



Proceeding south-westwards from Minhla for some 11 miles, one 

 descends continuously in the Miocene Series, the dips varying from 

 7° to 30°, and from north to north-east. In the Tangaing choung, 

 near Tangaing village (long. 94° 58' E., lat. 19° 56' In".), a coarse, 

 grey, shelly sandstone was met with, dipping 30° to N. 45° E., 

 and containing poorly -preserved fossils, including a fragment of 

 Ostrea and Aira Bumesi, this species being found previously only 

 in the zone of Parallelipipedum prototortuosum at Kama. In the 

 Tezan choung, which flows from Toungu to join the Tangaing 

 choung about 1 mile above (that is, north of) the village of that 

 name, the north-easterly dip becomes accentuated, changing west- 

 wards to inversion and beyond to vertical and high easterly dips 

 (60°-|-). In this stream, about 1 mile north of Toungu, near the 

 inversion just mentioned, a bluish shelly and sandy marl, with 

 bands of greenish calcareous sandstone, yielded the following 

 fossils : — 



Ceratotrochus Alcoc/danus, Noetl. 

 ParacyatMis cceruleus, Dune. 

 Eupsammia 7'egalis, Alcock. 

 Actinacis No&tlingi, sp. nov. 

 Fecten irravadicus, Noetl. 



Jouannetia protocitmingi, sp. nov. 

 Biscohelix mmuta, Noetl. 

 Solarium sp. 

 Sigarettcs javamis, Mart. 

 Cyprcea Everwijni (?) Mart. 



Also numerous poorly-preserved specimens of a Trochosmilia (?), 

 casts and poorly-preserved specimens of Dione protophilippi- 

 narum (?) Noetl., Tellina Hilli (?) I!^oetl., Solarium maximum (?) 

 Phil., Torinia Buddha (?) Noetl., and Turritella, Oliva, Fusus (?), 

 Natica, Voluta (?), Conus, etc., the corals being particularly 

 abundant. This assemblage appears to combine the faunas of the 

 zones of Paracgathus cceruleus at Yenangyat, and Cancellaria 

 Martiniana at Minbu/^ while containing several forms new to 

 Burma. 



East of Toungu (8 miles south-west of Minhla) the dips remain 

 high to the east, but south of it change to high angles west-south 



' F. Noetling, Palseontologia Indica (Mem. Geol. Surv. India) vol. i, no. 3 

 (1901) pp. 23, 24. 

 •' Ibid. p. 22. 3 iii^ pp 27-28, 35-36. 



