198 



Miclielijiia favosa GoLDF. 

 Battersbyia sp. 



In chapter III., above, I have fully stated what we know at present about 

 tile stratigraphical sequence of Ordovician-Permian rocks in this district, and 

 that the evidence from this side is not quite in favour of Frecii's opinion re- 

 garding the geological age of the coraUine limestone. 



9. At Hsi-hsia-shan^^ along the Yang-tse-kiang, below Nan-king, prov. 

 Kiang-su ; a limestone similar to the preceding contains 

 Hallia gigantca Micii. 

 Lonsdaleia floriforniis Flemm. 

 Lonsdaleia papillata Fi?ch.? 

 Zaphrentis spimilosa M. E. & H. 

 Battersbyia sp. 

 Syringopora rauiulosa Goldf. 

 Fistulipora minor M'Cov. 



This is the second locality of Lower Carboniferous coralline limestone in 

 southern China. The limestone which was first believed by Richthofen to 

 be Devonian in age, is now accepted as being Lower Carboniferous on the 

 authority of Fkech, who determined the corals enumerated above. 



The Hsi-hsia-shan section shows, according to Richthofen, the following 

 succession of rocks (in descending order) 



7. Quartz sandstone with indeterminable plant impressions. 



6. Thin-bedded marly .sandstone and sandy marl, of reddish and yellowish 



colour ; 30 m. thick. 

 5. Dark grey limestone and marl in alternation, with dark, partly car- 

 bonaceous shale with indistinct plant remains. The Lower parts of 

 these beds are fossiliferous ; the fossils are of the same forms as those 

 found in the underlying rocks. 

 4. Dark grey limestone with black flint nodules ; the Lower Carboni- 

 ferous corals identified by Frech are obtained in this horizon. 

 3. A thick complex of sandstone and conglomerate with quartz pebbles. 



1) Hsi-hsia-shan = Chinese characters unknown. 



2) Richthofen: China, vol. III., p, 727. 



