24 
Donald Baird and John R. Horner 
Class Chondrichthyes 
Asteracanthus sp. [including Edaphodon ? cephalic spine of Miller 1968, PL 1, 
Fig. 10] — hybodont shark. 
Scapanorhynchus texanus (Roemer) [Carcharias? , Isurus of Miller 1967, PI. 1 , 
Figs. 1-5] — ghost shark. 
Squalicorax pnstodontus (Agassiz) — galeoid shark. 
Ischyrhiza mira Leidy [including Hypolophus? rostrum fragments of Miller 
1968, PI. 1, Figs. 5-6] — sawfish. 
Brachyrhizodus wichitaensis Romer [ Hypolophus ?, Protamia ? of Miller 1968, 
PI. 1, Figs. 7-9, 13-14; but see Boreske 1974: 74] — rhinopterid ray. 
Class Osteichthyes 
Paralbula casei Estes [Egertoma of Miller 1967, PI. 1, Fig. 7] — ladyfish. 
Pycnodus phaseolus Hay [ Egertoma ? of Miller 1967, PI. 1, Fig. 8; Gyrodus ?, 
Anomoeodus , Bottosaums ? of Miller 1968, PI. 1, Figs, 4, 11-12, 15-16] — 
deep-bodied coral-nibbler. 
Class Reptilia 
Order Chelonia 
Trionyx spp. — soft-shelled turtles. 
Taphrosphys sp. — side-necked turtle. 
Order Squamata, Family Mosasauridae 
Tylosaums sp. (Wheeler 1966) — shallow water marine lizard. 
Platecarpus sp. — deeper water marine lizard. 
Order Crocodilia 
Deinosuchus rugosus (Emmons) — giant crocodile. 
Leidyosuchus cf. L. formidabilis Erickson — ordinary sized crocodile. 
Order Saurischia, Suborder Theropoda 
cf. Dryptosaurus or Albertosaums sp. — medium sized carnivorous 
dinosaur. 
Ornithomimus (?) sp. — ostrich-mimic dinosaur. 
Order Saurischia, Suborder Sauropodomorpha 
Hypsibema crassicauda Cope — huge herbivorous dinosaur. 
Order Ornithischia, Suborder Ornithopoda 
Hadrosaurinae indet. — flat-headed duckbill dinosaurs. 
FAUNAL AFFINITIES 
In his 1967 analysis of the Phoebus Landing assemblage Miller was im- 
pressed by its affinity with those of the Belly River Group (i.e. the 
Oldman and Judith River Formations) of western Canada and the moun- 
tain states. So far as the dinosaurs are concerned, the redeterminations 
