391 
by grits and sandstones, mostly red and evidently partly fused by igneons action 
[Desert Sandstone]. The calcareous sandstone occurs along the creeks and downs 
where water has denuded it ; aud, above all, is a coarse grit. The descending section 
in the creek bank, where the fossiliferous nodules occur, at 'Wollumbilla, is as 
follows ; — 
1. Brown stiff clay, full of pebbles of quartz, much waterworn. 
2. Clay. 
3. Slate-coloured marl, very friable above, but hard below, charged with strings 
of crystalline carbonate of lime, and breaking into rectangular fragments. 
In this occur the calcareous masses. The height of the section is about 
fifteen foot. On the east, at about three miles distance, coarse con- 
glomerates rise above these beds. The bluff end of the conglomerate rises 
to about twenty feet. [The conglomerates referred to after the words in 
italics must be the Desert Sandstone.] 
“ The calcareous boulders from the Wollumbilla Creek, when broken, are found 
to be of a deep olive colour internally, a few presenting a dull brown or bluish hue . 
They are very compact. In all of them organic remains are very abundant. The 
exteriors of many of the boulders are much waterworn, and exhibit only sections of the 
organic remains they contain, whilst in others a certain amount of decomposition or 
oxidation of the surface has taken place, which has produced a rotten exterior, looking 
like an impure chalk, of a yellow or buff colour. Where this is the case the fossils 
stand out sharply from the matrix.” 
I may observe that I do not agree with the Author as to the waterworn condition 
of the boulders, wbicb are probably concretionary masses weathering spheroidally. 
The Wollumbilla fossils w'ere described and figured by Mr. Charles Moore, 
F.G.S., in 1869.* I do not propose to repeat Mr. Clarke’s or ISlr. Moore’s lists, 
which are incorporated, with annotations, in my Colleague’s observations. Mr. Moore’s 
conclusion as to the age of the deposits is as follows : 
“ It is not easy to decide with certainty as to the exact position of the fossils 
that come from Wollumbilla. The Lias, the Great Oolite, the Oxford Clay, the 
Portland Oolite, and the Cretaceous Beds may each put in a claim ; but that of the 
Oxford Clay appears to be strongest. That they all belong to the Upper Oolite may with 
safety be inferred.” Of the Buugeworgorai and Amby Beds, in the same neighbourhood, 
Mr, Moore says, “ Prom the nature of the matrix, though this does not pass for much, 
they appear to have been derived from beds of a different character from those from the 
other districts. As similar Griocerata h.ave never been found below tho^ Lower 
Greensand, it is reasonable to infer the presence of Neocomian Beds in Australia, from 
whence it may have been derived.” 
Mr. Daintreo mentioned in 1868 t the occurrence of Belcmnites on the Dugald 
Hiver, Cloncurry District. 
In accompanying Ilann’s Korthern Exploring Expedition in 1872, Mr. Norman 
Taylor discovered richly fossiliferous deposits in the Walsh District. Prom notes which 
he has kindly placed at my disposal, I make the following extracts : 
“At Camp 11 on the Walsh Eiver, and likewise at Camp 79 (return 
journey),]; at Elizabeth Creek [near what is now AVrotham Park Station], where mostly 
* Quart. Journ. Geol. Soc., xxvi., p. 22G. . x- it n i 
t Report on the Cape River Diggings, and the latest Mineral Discoveries in Northern Qneenslarci 
Brisbane: by Authority : 1868. _ x t t 
J The positions of the Camps referred to are laid down (Mr. Taylor says not very accurately) on tl e 
map attached to Mr. Hann’s “ Diary of the Northern Expedition.” Brisbane : by Authority : lb7d. 
