351 
part of the Great Dividing Eange, but are then covered by basalt from a hundred to 
eight hundred feet in thickness, and having a minimum breadth of seven miles, beyond 
which the sandstones emerge in horizontal beds, so closely resembling those on the 
eastern side that it may be inferred that they are only interrupted along the fissures 
through which the basalt has been erupted.” It will be observed that Mr. Gregory says 
nothing of the reappearance of the basaltic escarpments on the western side of the 
Range. 
Our ideas of the relation of the basalt to the Ipswich and other formations are 
show'u by the Diagram-Section, Plate 49, fig. 2. 
LIFE OF THE PEEIOD. 
The following is my Colleague’s List of Fossils from the type district of the 
Ipswich Formation : — 
Kingdom — P lanM!. 
Section — CR'rPTOOAMiA. 
Cla.<g — Aoottieuones. 
Order — CAUAMAElBiE. 
Family — Equisetace®. 
Q-enus — Equisetom, Linnfeus. 
^qniseium rotiferum, Ten. Woods. 
Loc. Walloon. Also occurs at Stewart’s Creek, Eockliampton. 
X)qMisetum ? latum, Ten. Woods. 
Loc. Esk Valley. Also occurs at Eosewood, Rockhampton. 
Family — Sohizon'eueb.’e. 
Genus — Phtllothbca, Brongniart. 
Wiylloikeca earnosa, Ten. Woods. 
Loc. Walloon. 
^hyllotheca, .tp ind. (PI. 42, f. 1.) 
Loc. Bundanha. 
Family — CALAMiTBiE. 
Genus — Vrktebraria (Royle), McCoy. 
Vertelraria equiseti, Ten. Woods. 
Loc. Tivoli. 
Order— Filioes. 
Family — Spuenoptebid®. 
Genus — SpuENOPTERtS, Brongniart. 
^phenopteris Baileyana, Ten. Woods. 
Loc. Rosewood, near Ipswich. 
Genus— Trichomanites, Goeppert. 
Trloliomanites laxum. Ten. Woods. ? 
Loc. Rosewood, near Ipswich. Occurs also at Burrum 
^mchomanites spinifolici. Ten. Woods. 
Loc. Rosewood, near Ipswich ; and Redbank, north of Laidley. 
Trichomanites elongaia, Carruthers, sp. 
Loc. Tivoli and Abordare Mines j and Rosewood, near Ipswich. 
Family — Nettropterid®. 
Genus— Thinnebldia, Ettingshausen. 
Thinnfeldia odontopteroides, Morris. 
Loc. New Chum, Bundanha ; Aberdare ; Rosewood Scrub ; 
north of Laidley ; Tivoli ; Kilcoy Range. 
Pine Mountain ; Redbank, 
