348 W. B. Clarke on the Sedimentary 
fossils in sitw, to be acknowledged as well developed in Queens- 
land. But we shall then see how little is its relationship with 
the Wianamatta, and how still less with the Victorian beds. 
This reference to a very important circumstance leads me 
to suggest, that whether the Wianamatta series is to maintain 
a Paleozoic pretension or whether it is to ascend to the ‘Trias, 
the arrangement which will be found most correct will proba- 
bly be represented somewhat in this wise :— 
4. Cretaceous. Wollumbilla, Flinders, &c., (Queensland) 
and Western Australia. 
3. Inferior, or Great Oolite. Deposits at Wizard Peak, &c., 
Western Australia. 
2. Trias, Victoria. 
1, Paleozoic. Wianamatta, Hawkesbury, and Coal beds of 
New South Wales. 
In which arrangement, I would place the Victorian “ carbon- 
aceous” above my Wianamatta beds. Of course, subsequent 
discoveries may modify such a view, and lead to a final settlement 
of opinion, by enabling geologists to fill up the 
proposed to collect in 1861. I have now been able to discover 
that rocks of the above epochs range from the east of Wollum- 
billa across the Maranoa and Warrego to the Nive and Barcoo ; 
thence along the head of the Thomson to the Flinders, and so 
round by Tower Hill and the Belyando back to the Amby and 
aranoa Rivers ; not, of course, in one uninterrupted area 
rocks ; and it will probably be found that various groups of 
the Jurassic epoch are represented there. ; 
_ It is certainly singular that some well-known species of 
wuropean reputation, or their representatives, are found in the 
Western Australia Oolite, such as the following of the Great 
Oolite :—Trigonia costata; Ostrea Marshii; Ammonites Moo- 
formis; Avicula Munsteri, &c. 
_None of these have, however, been found in Queensland, 
New South Wales, in Victoria, or Tasmania ; but in the latter 
Wianamatta series, as well as of the Coal measures and lower 
