XXVll] 



THINNFELDIA 



541 



25 — 30 cm. A specimen from the Molteno beds of South Africa, 

 probably of Rhaetic age, represented in fig. 357, illustrates a 

 smaller leaf with pinnules of the linear type, some of which 

 are partially divided into shorter pinnules with forked veins. 

 The example represented in fig. 358, from Cyphergat (S. Africa), 

 shows two equal branches of a rachis with small contiguous 

 segments. 



Fig. 358. Thinnfeldia odontopteroides. From a specimen in the British Museum 

 (t. 2490). 1^ nat. size. 



Some specimens figured by Zeiller' from the Rhaetic strata 

 of Tonkin as Pecopteris {Bernouillia ?) sp. may be portions of 

 Thinnfeldia fronds, and the large leaves which he refers to 

 Ctenopteris Sarreni differ but slightly from the Australian 

 specimens described by Feistmantel as T. odontopteroides. 



> Zeiller (03). 



