MOORE—AUSIRALIAN MESOZOIC GHOLOGY. 939 
river, Mitchell Downs, may reasonably be assigned to the same age, 
since they contain Lingula ovalis or some other fossils in common. 
In considering the most typical of this group of Australian re- 
mains, which in the whole embraces about 90 species, we have in the 
first place the Purisiphonia Clarkei, the forms allied to which are 
stated by Dr. Bowerbank not to have hitherto been found below the 
Lower Chalk of Flamborough Head; but as I have, of this class, 
lately found the genus Grantia in the Lias, though it had never before 
been found below the Red Crag, the presence of the former genus, 
though pointing to a Cretaceous horizon, does not necessarily imply 
it. Five of the Moraminifera, at least, are found as low down as the 
Tias, but they are known to pass upwards into higher formations. 
Of the Brachiopoda, the Rhynchonellide are closely allied to Great- 
Oolite species. The Argyope have their analogues in those from the 
Tias; whilst the only species of Lingula is no doubt identical with 
the Z. ovalis of the Oxford Clay and Upper Oolites. 
Among the Conchifera, the Avicula braamburiensis, again, evi- 
dently connects the series with the Oxford Clay, some of the other 
species of that genus apparently belonging to the same natural 
group. The Zrigonie have their nearest alliance with those of the 
Portland Oolite. 
Respecting the Belemnitide, Professor Phillips leans to the con- 
clusion that, with the exception of the large phragmacone allied to 
B. paxillosus of the Lias, the others are more nearly related to Ox- 
ford-Clay types than to those of any other formation. 
Under these circumstances 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 the strongest. That they all belong to 
the Upper Oolite may with safety be inferred. 
There remain the genera Panopea, Mya, and Thracia, from 
Bungeworgari and the Amby river, and the gigantic Crioceras. 
From 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 Criocerata have never 
been found below the Lower Greensand, it.is reasonable to infer the 
presence of Neocomian beds in Australia*, from whence it may have 
been derived. 
Last of Mesozoic Species from Queensland. 
Plante (wood). Polymorphina lactea, V. § J. 
Purisiphonia Clarkei, Bowerbank. gibba (?), D’ Ord. 
Cristellaria acutauricularis, Iicht. & Planorbulina Ungeriana, D’ Ord, 
Moll. . lobatula, D’ Ord. 
—- cultrata, var. radiata, Moore. Vaginulina striata, D’ Ord. 
acutauricularis, var. longicostata, | Pentacrinus australis, Moore. 
Moore. Echinus (spines). 
Dentalina communis, -D’ Ord. Serpula intestinalis, Phil. 
* Unless a large Crioceras, said to have been met with near Port Elizabeth, in- 
dicates the existence of that genus in the Jurassic beds of South Africa, 
