58 
Dorothy Hill. 
IRWIN RIVER.^ 
Page 
UNFOSSILIFEROUS WHITE SHALES AND SANDSTONES. 
UPPER MARINE SERIES. 
COAL MEASURES. 
FOSSIL (TJFF BEDS:— 
“ Am.plexu^,'" sp. 
Kmi/phylium irizimalnm Hill. 
Oerthia .wlraia (Hind(“). 
Flerophylknn australe llinde. 
SHALES WITH LIMESTONFS WITH Metalegoceras. 
GLACIAL BEDS. 
Species to whicli no page reference has been given in the above lists have 
already been described (Hill, 1937a). 
The Cyathaxonia Fauna of the Palaeozoic consists of small, solitary 
Rugosa without dissepiments, and of Cladochonids, F'avositids, and Palaeacids. 
It ap|)ear,s very important in the Artinskian of the Urals and Timor, and the 
Middle J’ermian of TiiiKjr, and it is the only coral fauna known from the 
Kamilanji Series (mostly I^ermian, but j)ossi.bly in part Uralian) of Australia. 
Its occurrence in the Loner Carboniferous has already been summarised 
(Hudson, 1935 ; Ifill, 1938a, p. 5). Species belonging to it have recently 
(Dobrolyiibova, 1939) been <lescril)ed from the Mo>scovian and Uralian of 
Russia, so that its continuous existeic'e from the Lower Tournaisian to the 
Middle Permiaji is proved. F]vi<Ienco that it was already in existence in the 
Devonitm and even in the Silurian is accumulating. It is characteristic of 
a particular fa<*ics of def)osition, described by Hill (1938a, p. 5). The long 
range of the Tabulate genera in this fatma has long been known, and it may 
be that morphuloguailly simiku* Rugose forms from, different periods, at present 
regarded as different genorically, are really one and the same genus. These 
morphologically similar forms have already l)een indicated (Hill, 1938u, p. 8). 
This pi)ssibility weakens the reliance which may be placed on the genera as 
indicators of horizon. Tlio sj>ecies from both tlie Wandagee Stage and the 
Callytharra Stage, however, are comparable with Aitlnskian or Middle Permian- 
Basleo species, ratiier tlian vvilli Uralian or Uj)])er Permian species, and Eury- 
phylluiii’ is so far known, outside Australia, only in Wtinskian beds. In the 
absence of species ct)mmon to the Western Anstralian faunas and the 'Timor 
or Russian faunas, cannot at present indicate the ])recise ago of our faiinas. 
Two S])ecies from tlie W'antlagee Stage, Euryphyllurn reidi (Ifill) and Titanmo- 
para immeytsa- (Flill), are associated at Uastle. Creek, Tlicijdorc, Queensland, 
at an unknown horizon in the Bowen se([uence. Cladochoniis nicholsoni 
(F^theridge) from the Nooncani^ah series, occurs in the Condamine F'^ault Block 
and in the Coral Stage (,)f the Bowmen Alarino Series in the Springsiire District, 
Queensland. 
ZOANTKAKIA MADKEPORARIA RUGOSA 
AMPl.EXIMORPHS. 
Am])l6ximorphs ; Hill, 194(1, p. 
These simjde, (*.ylindrical, or fast-iculate Rugose corals with short, e([ual 
lamellar se])ta, and complete tahiilae, and without dissepiments, are common 
in the Silurian, Devonian, Carboniferous, and Permian, and ]:)robably represent 
the endiJoints of trends of simplification in many stocks. In the Permian of 
=* Succesdon after Tek-iiert (1939, p. G), and Clarke (I93S. p. 429). 
