460 PROCEEDINGS OF SECTION C. 
The discovery of Lefidodendron has not yet been recorded from 
‘Tasmania or New Zealand. 
2np Group.—The Permo-Carboniferous system of New South 
Wales, which comes next in order, and which is characterised by 
a predominance of Glossopteris in the flora, is extensively developed 
in New South Wales and Queensland. Productive coal measures 
occur in this system on three horizons in New South Wales, and 
on two horizons in Queensland. These three coal-bearing 
horizons in New South Wales are—(1), first and lowest, the Greta 
(Stony Creek) series, then (2), the Tomago (East Maitland) 
series, then last and uppermost (3), the Newcastle series. The 
total thickness of this system and its associated strata at New- 
castle is about 11,000ft., containing a total thickness of about 
150ft. of coal, without taking into consideration seams less than 
3ft. thick. 
With the exception of the small outlying coalfield of the 
Ward’s River, near Stroud, this system is geologically united to 
form a single vast coalfield, extending from Bateman’s Bay on 
the south to Port Stephens on the north, thence sweeping inland 
under the Blue Mountains to the Talbragor River, thence 
trending northerly to the Queensland border, where it dips under 
the newer Rolling Downs formation, and does not reappear until 
the head of the Dawson River is reached in Central Queensland, 
where the equivalents of the Newcastle or Tomago measures are 
found to be developed, and further north, near the junction of 
the Isaacs River with the Mackenzie, the Greta coal-measures 
are exposed. This coal-basin extends for a short distance beyond 
Fort Cooper, where it terminates, but its former further continua- 
tion in a northerly direction is probably marked by the outlying 
Bowen River coalfield, and possibly by the small concealed coal- 
field, discovered by Mr. R. L. Jack, F.G.S., the Government 
geologist of Queensland, at Townsville. The Little River coal- 
field between Cooktown and the Palmer Gold-field may also at one 
time have been united to the main basin, as the strata both in this 
and in the Townsville coalfield contain Glossopteris. The 
Permo-Carboniferous coalfields of New South Wales are nine in 
number, as follows :—(1) The Hunter River (Northern) coalfield ; 
(2) the Ward’s River coalfield ; (3) the Sydney coalfield ; (4) the 
Illawarra (Southern) coalfield; (5) the Mittagong (South-western) 
coalfield; (6) the Blue Mountain (Western) coalfield; (7) the 
Talbragar River coalfield ; (8) the Namoi River coalfield ; (9) the 
Gwydir River coalfield. 
With the exception of the Neweastle and Tomago (Hast 
Maitland) coal-measures in the Hunter River coalfield, and 
possibly of the last three fields in the above list, which as yet are 
not much explored, all the other Permo-Carboniferous coalfields of 
New South Wales are considered by Mr. C. 8. Wilkinson, F.G.S., 
