All the buff-coloured shales, of which there is a thickness of 200 feet r 

 are more or less bituminous, and their utilisation for the extraction 

 of oil has received some consideration. 



The lignite bands did not yield any leaf fragments, but several 

 impressions were found in the shales. These were examined by 

 Dr. Shirley, who identified (?) Magnolia, Ficus subgcepperti, Ficus- 

 sp. ind., and (?) Marsilea* 



The shales also furnished a number of fragmentary fish remains, 

 mostly consisting of small bones silicified to honey-coloured chal- 

 cedony, but with one specimen showing all the details of the fish 

 outline and structure except the head.f 



The geological horizon m&y be regarded as Tertiary, although 

 opinions have been expressed that the deposits should be considered 

 to be Cretaceous. 



ST. PETER'S. 



The specimens from the St. Peter's clay pits near Sydney were 

 found many years ago by the writer \vhile collecting fish fossils at 

 the Carrington Brick Company's clay pit. The fish remains have been 

 described by Dr. Woodward, J and include the following genera : 

 Acentrophorus, Cleithrolepis, Elonichithys , Elpisopholis, Myriolepis, 

 Palceoniscus, Pkolidophorus, Platysomus, Pleurocanthus, Sagenodus, 

 Semionotus. 



A large labyrinthodont about twelve feet long, almost perfect 

 and wonderfully preserved, was also found. It is allied to Mastodon- 

 saurus, but has not yet been described. In addition, numerous 

 specimens of Unio and Unionella have been found, while amongst 

 the flora the principal genera, recorded from the locality consist of 

 Thinnfeldia, Sphenopteris, Cladophlebis, Macrotceniopteris, Olean- 

 dridium, Tceniopteris, Podozamites, Baiera, and Phyllotheca. 



The deposits consist mostly of greyish clay shales, with numerous 

 narrow bands and concretionary nodules. These bands and nodules 

 are partly composed of clay ironstone and are marked with lines of 



* Fossil Plants from Duaringa, Ipswich, Dawson R., and Stanwell, &e. By J. Shirley, 

 B.Sc. (Bull. 18), p. 16, with 3 plates, 8vo. By Auth., Brisbane, 1902, G.S.Q. Pub. No. 171. 



t (a) On the Geology of the Dawson and Mackenzie Rivers &c., by B.D. fcap. By 

 Auth., Brisbane, 1901, G.S.Q. Pub. No. 155, p. 20. 



(6) Annual Progress Report of the Geological Survey for the Year 1900 (1901). G.S.Q. 

 Pub. No. 159, p. 16. 



% Fossil Fishes of the Hawkesbury Series at St. Peter's, by A. G. Woodward, LL.D., F.R.S, 

 Memoirs of the Geol. Surv. of N.S. Wales, Palaeontology No. 10, p. 22, with 3 plates , 4to. 

 Sydney. By Auth. 1908. 



The Invertebrate Fauna of the Hawkesbury-Wianamatta Series of New South Wales, 

 by R. Etheridge, junr., Curator of the Australian Museum. Memoirs of the Geol. Surv. of. 

 N.S.W., Palaeontology No. 1, p. 25 with 2 plates .4to. Sydney. By Auth. 1888. 



