On Cretaceous Cephalopoda from Zululand. 223 



are intensely hard and are crowded with lamellibranchs, etc., much 

 broken shelly matter, but the fossils are difficult to extract. 



" Along the railway cutting, the section shows dark-brown to khaki- 

 coloured sandy stuff, without good bedding, with thin sandstone-ribs 

 and concretionary limestone-nodules, in which Ammonites are found. 

 Apparently, the same horizon is represented N. of the Umfolozi River at 

 point X (see plan), where Ammonites are common. . . . The whole 

 thickness of strata involved is probably not more than 250 feet, the dip 

 being S.E. at 1 or H ; and since the strata must have accumulated in 

 shallow water, it is unlikely that several distinct zones are represented . 

 all the fossils may therefore be considered to come from one horizon' 

 and the beds and their fauna can therefore be regarded as a whole. 1 ' 



It will be advisable to describe the Umkwelaue Hill fauna separately 

 from that of the Manuan Creek and the other localities. There is a 

 large collection of Ammonites from the Umzamba (" TJmtamvuna '') 

 Beds of Pondoland in the British Museum, approximately corresponding 

 in age with the Umkwelaue Hill fauna, as stated by Woods * and by 

 Crick 1 in his very useful general account of the " Cretaceous Rocks 

 of Natal and Zululand." Crick was at work describing this fauna 

 already before 1906 + but his MS. is still unfinished, and the writer 

 hopes to complete and revise it as soon as facilities for publication are 

 offered. This collection in the British Museum includes a number of 

 species not known to Baily, Griesbach, Woods and Van Hoepeu, and 

 not represented at Umkwelane Hill ; and reference to some of these 

 will be made in the specific descriptions when necessary. A new 

 collection of Pondolaud Ammonites, kindly sent to the writer by Mr. 

 Henry Woods, includes a further series of undescribed forms. In his 

 account of this fauna, to be published shortly in the ' Annals of the 

 Durban Museum/ the writer is drawing attention to the improbability 

 of such faunas representing only "one horizon." The great majority, if 

 not all, of the Pondoland and Umkwelane Hill forms are of Campaniau 

 and Maestrichtian age, a possible range of at least five zones. The 

 Pondoland strata are only twenty feet thick and of a sandy facies, 

 suggesting rapid deposition : but the new collection contains doubtful 

 or long-lived species that might even be pre-Campanian in age. The 

 assertion, thus, is not justified that the corresponding beds at 

 Umkwelaue Hill, of a much greater thickness, can be regarded as 

 belonging to " one horizon." 



The third part of this paper will deal with the Mauuan Creek 



* Loc. cit., p. 347. 

 t Loc. cit. (' Geol. Mag-.'), p. 313. 



J Woods, loc. cit. (1906), p. 337. Kossmat, "Die Bedetitung d. Siidind.- 

 Kreideform.," ' Jb.K.K.Geol.K.A.,' vol.xliv (1894), Heft 3 and 4 (1895), pp. 463-4 



