102 FENESTELLA AND POLYPORA. 
In 1911* Mr. R. A. Wearne recorded the discovery of 
a specimen of Fenestella fossula immediately north-west 
of Mt. Barney and about 16 or 17 miles west of Richmond 
Gap; from this specimen he concluded that rocks of 
Permc-Carboniferous age existed in that district where 
they were formerly considered Trias-Jura. He refers to 
the same specimen elsewheret and comments on the fact 
that the rocks are quite undisturbed. In this connection 
it might be pointed out here that the nearest rocks of 
undoubted Permo-Carboniferous age both in Queensland 
(Warwick District), and New South Wales (north of Drake 
and Rivertree) have all suffered a considerable amount of 
metamorphism. 
Mr. Wearne has informed me that he collected the 
specimen when time did not permit him to make any further 
investigations as to its source, and he agrees with me that 
it was probably another such occurrence as the one now 
recorded. 
The nearest outcrop of Permo-Carboniferous rocks 
to Richmond Gap is about 25 miles away in a_ south- 
westerly directiont. They are excessively folded and 
faulted and contain indurated clays and shales. These 
extend southwards past Drake and have been described 
by Andrew. §. At various points in them fossils have been 
found and these include Fenestella fossula and F. internata. 
These rocks extend to the east under the Clarence series, 
but it is not known how far. 
Permo-Carboniferous rocks also occur at Warwick, 
about 60 miles N. of W. from Richmond Gap, and they are 
extensively folded and faulted. 
Fragments of plant fossils were found in the sandstone 
associated with the conglomerates, but they were too 
fragmentary for determination. Dr. Richards has visited 
the area again, and feund further specimens which prove 
the sandstone to be of Cainozoic Age. The remains he 
tound include dicotyledonous leaves and portions of a fern 
*Proc. Roy. Soc., N.S.W., xlv., 1911, p. 142. 
* A.A.A.S., xii. (Sydney, 1911), p. 1265. 
tSee Geological map of N.S.W., 1914. 
§Geol. Surv., N.S.W., Mineral Resources No. 12, 1908. 
