(a.) Me see that a flora of, generally speaking, Mesozoic character 
occurs in Australia already in the Lower Coal Measures, between beds with a 
marine Carboniferous fauna, and that this flora passes into the higher beds. 
If we would take only this flora into consideration, a Mesozoic Epoch would 
appear to last from Carboniferous beds up to Jurassic. 
(< b .) On the other hand, there are in Mesozoic beds, viz., in the 
Ilawkesbury-Wiananiatta Series, heteroccrcal fishes, which by themselves 
would he considered as Palaeozoic, so that, with regard to the animals only, a 
Palaeozoic Epoch would be found lasting up into Mesozoic strata ; while if 
we consider the stratigrapliical and palaeontological relations together, the 
Lower Coal Measures and Newcastle beds, in spite of the so-called Mesozoic 
flora, are Palaeozoic, and the Ilawkesbury-Wiananiatta beds, in spite of 
J?al(Boniscus , Myriolepis , and Cleitlirolepis, are Mesozoic. 
I might represent these relations in the following manner : — 
1 
f 
o 
"2 
§ 
Palieozoic. 
Mesozoic. 
Upper Devonian. 
Lower Carboniferous. 
Permo-Carboniferous. 
Wianamatta and 
Hawkesbury. 
Upper Coal Beds, 
Carbonaceous. 
^ £ 
Goonoo Goonoo, &c. 
Smith’s Creek. 
Lower Coal Measures. 
lleterocercal fish. 
Queensland. 
2 '■£ 
(N.S. Wales). 
Port Stephens. 
Upper Marine Beds. 
Labyrinthodonts. 
N.S. Wales. 
a a 
Queensland. 
Bobuntungen 
Newcastle Beds. 
Plants. 
Victoria. 
5 K 
Victoria. 
(Queensland). 
Bacchus Marsh Beds. 
N.S. Wales. 
Tasmania 
To 
Lepidodendran , ye. 
Gippsland 
Mersey Beds (Tasmania). 
(Jerusalem). 
(Victoria). 
Olossopteris. 
& 
Rhacopteris. 
Gangamopteris. 
Cyclostigma. 
Ndggerathiopsis, Sfc. 
2 
Lcpidodendron. 
Flora only : 
Palaeozoic. 
Mesozoic. 
j v. 
Fauna only : 
Paltcozoic. 
Mesozoic. 
