Brenson.—-Palaeozoic and Mesozoic Seas in Australasia. 4] 
Styx River beds in Queensland. The former contains thirty-six species, a 
typical Wealden association, free from angiosperms; the latter, which 
probably belongs to a slightly higher horizon, contains three angiosperms 
out of fourteen forms. Both these Queensland floras contain Micro- 
phyllopteris, a genus instituted by Arber (1917) to receive one of the forms 
present at the Waikato Heads. Walkom (1919), indeed, remarks on the 
resemblance of the Styx River flora to that of Waikato Heads. 
separated regions are nearly allied but not identical, but the similarity 
between them is probably sufficient to allow of this hypothesis." Further, 
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we must note his remark that “ as regards Antarctica, we have no evidence 
as yet of any Rhaetic land there, but in Jurassic times Graham’s Land may 
have been connected with New Zealand and also with Australia." Never- 
theless, we must recall that the Mesozoic flora was a remarkably cosmo- 
politan one, and accordingly the provincial affinities must be unusually 
clear to give much support to palaeogeographic hypothesis. Special interest 
attaches, therefore, to the form Linguifolium, which was supposed to 
belong to Glossopteris prior to Arber’s investigations.* It occurs in the 
*The late Dr. Arber concluded that “there is no evidence that New Zealand 
formed part of Gondwanaland "; but this, in Seward’s opinion, is open to question. 
"The leaves on which the genus Linguifolium is founded are, I believe, generically 
else 
Glossopteris or other members of the later flora of the Gondwana continent” (Seward, 
1914, p. 39). Arber's (1917) reply to this criticism should also be noted. 
