1867.] 



TATE — SOUTH-AFEICAN FOSSILS. 



167 



From the above Table the following conclusion may he deduced : — 

 That the fauna of the strata (Trigonia-heds) overlying the plant- 

 bearing beds of Geelhoutboom presents a decided Oolitic facies ; and, 

 though few species are common to these South-African strata and 

 the European Oolites, yet from the large number of species in these 

 strata at Uitenhage having analogues in the Lower and Middle 

 Oolites, and the species in common pointing in the same direction, 

 the fossil fauna of the Sunday's Eiver and Zwartkop Eiver Limestones 

 represents that of the Oolitic rocks of Europe, and approximates to 

 that of the Great Oolite. 



TV. Observations on the Secondary Strata of South Africa, and on 

 their foreign equivalents. 



The Secondary strata now determined for South Africa are as 

 follows : — 



Strata. 



I. Limestones &c. with fossils 



(Quart. Journ. Geol. Soc. 

 vol. xi. pp. 453 &c.) 



II. Uitenhage Formation. 



1. Limestones and shelly 



sandstones of Uitenhage 

 (with abundance of ma- 

 rine fossils) 



2. (Lower strata of the Zwart- 



kop Crag) Wood-bed 

 series 



3. Enon Conglomerate 



III. Karoo Series. 



1. Stormberg Beds 



2. Beaufort Beds 



3. Koonap Beds 



4. EccaBeds 



Locahties. 



Umtafuna River, Natal ^ 



] Bushman's River, Albany 



Sunday's, Zwartkop, and Gam- 

 toos Rivers, Uitenhage 



/'Bushman's River, Albany , 



J Bethelsdorp ; Zwartkop River 

 1 Geelhoutboom on the Sunday's 



l^ River, Uitenhage 



f Bushman's River, Albany 



j Enon, Sunday's River, Alexan- 



I DRIA 



i^ Zwartkop River, Uitenhage 



?Drakenberg Range, Orange Ri- 



I VER Free States and Natal. 

 -{ Bloemfontein,ORANGERiVERFREE 



I States 



1^ Stormberg Range, Albert &c. . . . 



r Beaufort; GraapReinet; Coles- 

 < BERG ; Cradock ; Fort Beau- 



[ FORT, &C 



Worcester; Somerset, &c 



f Worcester ; Albany ; Victoria, 

 1 &c 



Cretaceous. 



Jurassic. 



Triassic. 



The study of the affinities of the fossils of Secondary age in South 

 Africa has led me to consider the distribution of the lower members 

 of the Mesozoic rocks over the surface of the earth, and the laws 

 that apparently were in operation during their deposition. 



The Upper Trias presents, in the majority of the countries in 

 which it has been carefully examined, a remarkable uniformity with 

 * The names in capital letters are names of Provinces, 



