20 
A general survey of the flora undoubtedly indicates a Jurassic age for the 
rocks in which the plants occur. A comparison of the flora with other fossil 
plant assemblages known in Australia affords confirmation of this conclusion. 
The Talbragar flora shows closer affinities with the Jurassic floras of Australia 
than with those of other horizons. The closer relation to the Jurassic floras 
than to other Australian Mesozoic floras is conclusively indicated by the 
following table : — ■ 
Table showing Occurrence of Species from Talbragar Beds in other 
Australasian Mesozoic Strata. 
-A : : s f ... 
J urassic 
Triassie. 
ZfJ 
o 
cz 
O 
rJi 
m 
o 
o 
3 
Victoria. 
New Zealand. 
Ipswich Series (Q'laud). 
to 
o 
V} 
ct 
a 
0) 
'C 
m 
u 
rX 
£ 
Narrabee . Series. 
a> a 
'Z o 
o Zi. 
rn « 
a ~ 
ir m 
Cladophlebis australis 
X 
X 
X 
X 
X 
X 
X 
Coniopteris hymenophylloides 
x 
X 
X 
X 
Thinnfeldia Feist in anleli 
X 
X 
X 
X 
X 
X 
X 
Thinnfeldia talbragarensis 
X 
... 
Thinnfeldia pinnata 
X 
X ? 
Tceniopteris spatulata 
X 
X 
X 
X 
X 
X 
Brachyphyllum sp 
X 
X ? 
X 
? 
Platodadus plana 
X 
X 
X ? 
(«) 
X 
? Pagiophi/llum peregrinvm 
X 
X 
X 
Podozainites lanceolatus 
X 
(«) 
X 
(a) 
X 
Araucarites grand is 
X 
(") 
(«) 
(a) 
(«) 
(«) Allied species. 
Of the eleven species occurring at Talbragar, nine, possibly ten, are 
found in the other Jurassic floras of Australia;' two, possibly three, in the 
Triassic floras of New South Wales and Queensland, and five, possibly six, in 
the Lower Cretaceous flora of Queensland. We may therefore state that the 
Talbragar flora as a whole shows little affinity with either the Ipswich flora of 
Queensland or the Narrabeen, Hawkesbury or Wianamatta floras of New 
South Wales. There is a greater affinity with the Lower Cretaceous Flora of 
the Burrum Series of Queensland, indicated mainly by the coniferous species 
present, but the presence of the Thinnfeldias and Coniopteris in the Talbragar 
Beds points to their being older than the Burrum Series. From the evidence 
available, then, the only possible conclusion seems to be that the Talbragar 
Beds are of Jurassic Age, and the probability is that they belong to the lower 
portion of the Jurassic System. 
