■ 1.0 
(see No. 07, p. 1111), were denuded before the commencement of the depo- 
sition of the Ilawkesbury rocks, so that an interval of some length is here 
indicated. But the fossils also combine with the above relations to show that 
the age of the Ilawkesbury- Wianamatta beds is more recent than that of the 
Newcastle Coal Measures; I refer here especially to the papers under Nos. 
61, 05, 00, 07, 08, 09, and 70. 
In his last work in 1S78 (No. 38), Mr. Clarke treated of the 
Hawkcsbury-Wianamatta beds under the heading “ Mesozoic or Secondary 
formations” (pp. GS-73), while in Appendix XVIII (p. 155) lie calls them 
‘ ‘ S upra- carboniferous . ’ ’ 
Taking all the present evidence into due consideration, there can, I 
think, be no reasonable objection against their being considered to belong to 
the Mesozoic Period. 
The fossils of both these groups are - 
Havvkesbury. 
Wianamatta. 
Lalyrinthodont fossil (Maslodonsau- 
Cockatoo Island, Port Jackson. 
rits ?) . 
Labyrinthodont (?) remains, Stephens 
Bowral. 
Platyceps Wilkinsoni , Stephens 
Gosford, Brisbane W ater. 
Pal cconiscus ant ipodeus, Egert . 
Gosford, Brisbane W ater 
Parramatta. 
Cleitlirolepis cjranulatus, Egert 
Gosford, Brisbane Water ; Cockatoo 
Island. 
Myriolepis Clarlcei, Egert 
Cockatoo Island. 
PhjjUollicca JTooJccri, M‘Coy 
Clarke’s Hill, near 
,, concinna , T. -Woods 
Sugarloaf Kill. 
Cobbity. 
Sphenoptcris crcbra, T. -Woods 
Talbragar Eivcr. 
,, glossophylla, T. -Woods... 
Talbragar Mines, near Dubbo. 
Neuroptcris austral is, T. -Woods ...... 
Gravel of the Bell River, near Wei- 
lington. 
Thinnfeldia odonf opt oroides , Morr., sp. 
Mount Victoria 
V 99 
,, media, T. -Woods 
Dubbo. 
< Heichenia dubia, Eeistm. 
Odontoperis microplnjlla, M‘Coy 
Clarke’s Hill. 
Peconteris tenui folia, LVl'Coy 
Alethopteris australis, Morr., sp 
Quoted by Tenison Woods (No. 51) 
Quoted by Tenison 
Woods (No. 54). 
,, Currant, T. -Woods 
Talbragar (T. Woods, No. 54). 
Marian opteris major , Eeistm 
Talbragar River. 
Macrotcenioptcris wianamattce, Eeistm. 
Mt. Victoria (according to Tenison 
lvenny’s Kill. 
Woods, No. 51). 
Cycadopteris (?) scol open drina, Ratte. 
Jeanpaulia palmata, Eatte. 
Podozamites distans, Presl 
Woolloomooloo Bay 
South Creek. 
Walclna Milneana, T. -Woods 
Talbragar River. 
Age — Mcsozoic-Triassic, and perhaps partly Lower Jurassic. 
