BY A. B. WALKOM. (^ 1 



Table viii. — {continued) 



Species known onlj^ in the 

 Ipswinh Sexies. 



(rinkffo antarctica 

 a. dujitata 

 Ha ( era hkhn.'^ 



/>. </ink!/otf/e-'< 



Sfarh f/ojt/fi/'« a n n u/a rioidc-< 



S. Sim/nond><i 



Bennett itex {Will iaui-^oiiiu) sj). ' Taxitea planiu 



Fterophi/lliim nudtilinea/ii/ii \ Ph<eiiiropsi-'< elon(/afii> 



(iyninospernious seeds i 



Species known only in the 

 Walloon Sei^ies. 



P'^endodenis eathienm.^ 

 Otozam ife-'i qncen-'ilaiidi 



O. ol>t)l.s,l.-< 



O. Ftisfmaiitell 



0. MandeJ.'^loli i 



A rancarites pohjcarpa 



llrarhy Jill yll urn crax'Oiin 



(d) Age of the Queensland Loive^' Mesozoic Rocks. — The evi- 

 dence of the fossil floras of the Ipswich and Walloon Series is 

 very strongly in favour of a Triassic Age for the former, and a 

 Jurassic Age for the latter. 



The flora of the Ipswich Series shows marked resemblance to 

 floras which are regarded as Rhsetic in age in other parts of the 

 world, particularly those of Tonkin and South Africa. Pvegard- 

 ing the actual position in the Geological P^ecord of many of the 

 occurrences classed as Rhsetic from their fossil flora, I have re- 

 ceived some interesting information from Dr. A. L. du Toit, of 

 the South African Geological Survey.* 



Dr. du Toit has come to the conclusion that some of the so- 

 called Rhajtic strata would be better placed in the Upper Trias 

 ( Keuper) than in the Rhsetic. He includes among these the 

 strata in South Africa, Tonkin, and Persia. In the case of South 

 Africa, he finds this is borne out by an analysis of the vertebrate 

 fauna of the Red beds and Cave sandstone overlying the Molteno 

 Beds, which is of Triassic ati&nities. He concludes that the Jiora 

 of the Molteno Beds is of Keuper Aye and not younger. 



The Ipswich flora is undoubtedly very similar to that of the 

 Molteno Beds (see Table iii., column 2), but the finding of Gloss- 

 opteris in the latter suggests that it is possibly slightly older 

 than the Ipswich flora. 



* Letter dated 2nd December, 1916. 



