In the Upper Cretaceous (Desert Sandstone) of Queensland there occurs a Belemnite somewhat resembling Belemnites diptycha, but with a very pointed apex.
Cretaceous Cephalopods, New Zealand.—
In New Zealand the Amuri System (Cretaceous) contains fossils which have been referred to the genera Ammonites, Baculites, Hamites, Ancyloceras and Belemnites, but probably these determinations require some further revision. A species of Belemnite has also been noted from probable Cretaceous beds in Papua.
The Cainozoic System in Victoria contains a true Nautilus, N. geelongensis; and Aturia australis ([Fig. 106 E]), a nautiloid shell having zig-zag suture lines and septal necks enclosing the siphuncle. A. australis is also found in the Oamaru Series of New Zealand; in Victoria it has an extensive vertical range, from Balcombian to Kalimnan (Oligocene to Lower Pliocene). Species of Nautilus are also found in the Janjukian of the Murray River Cliffs; where, in some cases the shell has been infilled with clear gypsum or selenite, through which can be seen the tubular siphuncle in its original position. Spirulirostra curta ([Fig. 106 F]) is an interesting cuttle-bone of rare occurrence. The genus is represented by two other species only, occurring in the Miocene of Italy and Germany. In Victoria it is occasionally found in the Janjukian marly limestone at Bird Rock near Torquay.
COMMON OR CHARACTERISTIC FOSSILS OF THE FOREGOING CHAPTER.
PELECYPODA.
Ambonychia, macroptera, Tate. Cambrian: S. Australia. (?) Modiolopsis knowsleyensis, Chapm. L. Ordovician: Victoria.
Orthonota australis, Chapm. Silurian (Melbournian): Victoria.