From the Jurassic beds (Talbragar Series) of New South Wales, an interesting collection of ganoid fishes has been described, comprising Coccolepis australis, Aphnelepis australis, Aetheolepis mirabilis, Archaeomaene tenuis, A. robustus, Leptolepis talbragarensis, L. lowei and L. gregarina ([Fig. 129]).
Lower Cretaceous Fishes.—
Fish remains are fairly abundant in the Lower Cretaceous of Queensland. They comprise both the sharks and the ganoids. Of the sharks, a specimen, showing seven conjoined vertebrae has been named Lamna daviesii, from the Richmond Downs, Flinders River district; and a tooth referred to Lamna appendiculatus, Agassiz, from Kamileroy, Leichhardt River, N.W. Queensland. The typical Cretaceous genus Corax is represented by a small tooth named C. australis ([Fig. 124 C]), from the Hamilton River, Queensland, and which closely approaches the tooth of Corax affinis, Agassiz, from the Upper Cretaceous of Europe. Of the ganoid fishes two genera, both members of the family Aspidorhynchidae, have been found in Queensland. Aspidorhynchus sp. and Belonostomus sweeti ([Fig. 124 D]) have both occurred at Hughenden, Flinders River district. The former genus has a slender body and produced rostrum; in Europe it is more characteristic of Jurassic strata. Belonostomus ranges from the Upper Oolite, Bavaria, to the Upper Cretaceous in other parts of the world. Remains of a species of Portheus, one of the predaceous fishes which lived in the Cretaceous period, consisting of a portion of the cranium with the anterior part of the jaws, has been obtained from the Rolling Downs Formation (Lower Cretaceous) near Hughenden, Queensland.
Cretaceous Fishes, New Zealand.—
Fig. 130—CRETACEOUS and CAINOZOIC FISH-TEETH.
A—Notidanus marginalis, Davis. Cainozoic. New Zealand
B—Callorhynchus hectori, Newton. Cainozoic. New Zealand
C—Oxyrhina hastalis, Ag. Cainozoic. Victoria
D—Lamna apiculata, Ag. Cainozoic. Victoria
E—Carcharodon auriculatus, Blainv. sp. Cainozoic. Victoria
F—Sargus laticonus, Davis. Cainozoic. New Zealand
The Cretaceous beds of New Zealand are grouped in ascending order as the Waipara Greensands, the Amuri Limestone and the Weka Pass Stone. In the Waipara beds occur the teeth of Notidanus marginalis ([Fig. 130 A]), and N. dentatus. In the Amuri Limestone N. dentatus is again found, as well as the genus Lamna, represented by L. compressa, Ag. (originally described as L. marginalis, Davis), L. carinata and L. hectori. Two forms of “Elephant fish” are represented by their dental plates, namely Callorhynchus hectori ([Fig. 130 B]) and Ischyodus thurmanni, Pictet and Campiche (recorded as I. brevirostris, Ag.).
Cainozoic Fishes.—