HISTORICAL SKETCH. 



of those found in this coalfield without any trace of Glossopteris or 

 other memhers of the Glossopteris flora. Zeiller remarked that 

 this assemblage of types is characteristic of the Upper Coal 

 Measures of France, and that it is very remarkable that a flora of 

 the Northern type should have co-existed in South Africa with the 

 Glossopteris flora. The latter is now known to have flourished 

 both to the north and south of the Zambesi region. 



(e) German and Portuguese East Africa. 



In 1899, Potonie 1 announced the discovery of members of the 

 Glossopteris flora in both German and Portuguese East Africa. 

 In the following year he* figured several species. The following 

 were recorded from Ituli in Portuguese East Africa : — 



Glossopteris Browniana, Brong. 

 G. indica, Schimper. 

 G. angttstifolia, Broug. 



Vertebraria, Glossopteris, Schizoneura cf. Meriani, and Vultziopsis 

 were described from various localities in German East Africa. 



VII. South America. 

 (a) Brazil. 



In 1836, Uuger 3 figured a fragment of a petrified stem of 

 a tree-fern, found by Martius between Oeiras and Sao Gonrala 

 d'Amarante, in the province of Piauhy. A more complete specimen 

 was described by Brongniart* in 1872, as the type of Psaronius 

 brasiliensis. A still fuller description of the structure of this 

 fossil is given by Zeiller 5 in his memoir on the fossil flora of 

 Autun and Epinac, where he points out its striking similarity 

 to the silicified Psaronii of Autun of Permian age. Solrns- 

 Laubach 6 has recently published an account of what is known as 

 to the history of the type-specimen of this interesting fossil. 



1 Potonie (99). 2 Potonie (00), p. 49.";. 



3 Unger (36), p. lxx, pi. geol. i, fig. 4. 4 Brongniart (72). 



J Zeiller (90), p. 246, pi. xxi, rig-. 1. 6 Solms-Litubach (04). 



