Devonian Ostracoda.—
The little Primitia cuneus ([Fig. 113 A]) with a bean-shaped carapace and median pit or depression occurs somewhat frequently in the Middle Devonian Limestone of Buchan, Victoria. Another species, Primitia yassensis, is found in the shaly rock of Narrengullen Greek, New South Wales. It is probable that many other species of the group of the ostracoda remain to be described from Australian Devonian rocks.
Carboniferous Ostracoda.—
In Queensland a conspicuous little ostracod is Beyrichia varicosa from the Star Beds of Corner Creek.
Carbopermian Ostracoda.—
In the Carbopermian of Cessnock, New South Wales, Primitia dunii occurs; and in that of Farley is found Jonesina etheridgei. From both these localities Leperditia prominens was also obtained. Another species from New South Wales is Entomis jonesi ([Fig. 113 B]), described from the Muree Sandstone by de Koninck.
Fig. 113—UPPER PALAEOZOIC and MESOZOIC OSTRACODA.
A—Primitia cuneus, Chapm. Mid. Devonian. Victoria
B—Entomis jonesi, de Kon. Carboniferous. New South Wales
C—Synaphe mesozoica, Chapm. sp. Triassic. New South Wales
D—Cythere lobulata, Chapm. Jurassic. West Australia
E—Paradoxorhyncha foveolata, Chapm. Jurassic. West Australia
F—Loxoconcha jurassica, Chapm. Jurassic. West Australia
G—Cytheropteron australiense, Chapm. Jurassic. West Australia
Triassic Ostracoda.—