94 GEOLOGY OF LOWEK MESOZOIC ROCKS OF QUEENSLAND, 



tions of the Lower Mesozoic strata in Tasmania to one another 

 are not yet definitely settled. No attempt will be made here, 

 therefore, to correlate any of the Tasmanian Lower Mesozoic 

 rocks with the other Australian occurrences. One point mav be 

 noted. There appears to be an absence of Tceniopteris spatulata 

 in the Tasmanian strata, and this may indicate that they are 

 older than Jurassic. 



Opinions have been expressed regarding the age of Tasmanian 

 strata. Chapman* suggests that it may be possible to divide 

 the " Upper Coal-Measures" of Twelvetrees into an older and a 

 younger series. He concludes, " The Jurassic flora of the Tas- 

 manian localities, Jerusalem, Fingal, Spring Hill, York Plain, 

 Hamilton, Richmond, New Farm, Sandfly, Recherche, South 

 Cape, Longford, etc., appears to contain an assemblage which, 

 with some few exceptions, as Sageiwj^teris and Phfjenicopsis, is 

 practically identical with that of the plant-bearing strata of 

 Jurassic age in South Gippsland, Cape Otway, and Western 

 Victoria " 



Professor Davidf classes them provisionally "as Upper Trias 

 or Passage Beds into the Jurassic proper,"' whereas \V. S. Duni 

 regards them as equivalents of the Victorian Jurassic. 



Mr. Twelvetrees points out that the evidence of the fossil 

 flora in Tasmania, as far as it goes, is slightly in favour of a 

 Rhsetic age. He also considers that some of the Tasmanian 

 occurrences are the equivalents of the Clarence and Talbragar 

 Series in New South Wales. § 



Lower Mesozoic fossil plants are known from a number of 

 localities in New Zealand, but, in view of the fact that an ex- 

 amination of them has recently been carried out by Dr. E. A. 

 Newell Arber (the results not having been published yet||), it is 

 deemed inadvisable to discuss them at this stage. 



* Records (xeol. Surv. Victoria, iii., Pt.2, 1912, p.223. 



t British Assocn. Adv. Science, (4eoIoj^3' of the Commonwealth, p. 277. 



t Ibid., p. 297. 



^ (jreol. Surv. Tasmania, Bulletin 20, 191o, pp. 14-16. 



I! Issued in February, 1918, too late for considei^ation in tiie present 



paper, 



