4 UPPER CRETACEOUS TELEOSTS 
Phylactocephalus microlepis Davis c : : c : 141 
Genus Hemisaurida Kner . : : : : 5 : 0 146 
Hemisaurida hakelensis sp. nov. c : : ; : 148 
Order MycTOPHIFORMES ; : : : ; : : : 5 153 
Family SARDINIOIDIDAE nov. : : : : : : . 153 
Genus Sardinioides von der Marck : ; ; : : : 153 
Sardinioides minimus (Agassiz) . é : : : : 153 
Order CTENOTHRISSIFORMES. : : : : ; 4 : : 160 
Family AULOLEPIDAE Patterson . 3 : : ; : : 160 
Genus Pattersonichthys gen. nov. : 5 : : : : 160 
Paitersonichthys delicatus sp. nov. c é . : : 160 
Ill. Discussion : : : . 4 : ; " : 4 169 
Order = Ghiyitees ; . ; : : ‘ : . 169 
(A) Suborder ICHTHYOTRINGOIDEI c : ¢ : : : c 169 
(B) Suborder CIMOLICHTHYOIDE!L . : ; : : : : 176 
Family PRIONOLEPIDIDAE nov. é . : 9 é : 178 
Genus Prionolepis Egerton . : : : 179 
Prionolepis cataphractus (Pictet & Humbert) : : 179 
(C) Suborder ENCHODONTOIDEI : : : . . : : 191 
(D) Suborder HaLecorpEr ; : : : ; : : 3 198 
Order MycToOPHIFORMES : F : c : ; : : ; 202 
Order CTENOTHRISSIFORMES. ; : : : 2 : : ‘ 229 
IV. TELEOST EVOLUTION WITHIN THE CRETACEOUS : : : c c . 233 
V. CONCLUSIONS . : ; c j . 5 . : é 5 3 246 
VI. ACKNOWLEDGEMENTS ; : ; : é : : . : 5 247 
VII. REFERENCES . : : ‘ . : : : ‘ : 3 . 248 
VIII. L&tTTERING USED IN THE TEXT-FIGURES . . ; : : : : 253 
SYNOPSIS 
Redescriptions are given of most of the genera contained in Woodward’s (1901) families 
Enchodontidae, Dercetidae and Scopelidae. Four new suborders are erected within the order 
Salmoniformes, the Ichthyotringoidei, Cimolichthyoidei, Enchodontoidei and Halecoidei. The 
Ichthyotringoidei contains two families, the Ichthyotringidae and the new family Apateopho- 
lidae. The Cimolichthyoidei contains the Dercetidae and the new family Cimolichthyidae, 
with a third new family appended, the Prionolepididae. The Enchodontoidei is composed of 
two families, Enchodontidae and the new family Eurypholidae. The Halecoidei contains the 
single family Halecidae. A new family Sardinioididae is added to the Myctophiformes and a 
new genus, Patlersonichthys, is included within the ctenothrissiform family Aulolepidae. Each 
group is discussed in relation to its systematic position and the information gained is used in an 
overall consideration of the evolution of the teleosts in the Cretaceous. 
I. INTRODUCTION 
THE present work is intended as a revision of certain lower teleostean fishes from the 
Upper Cretaceous. By the close of this era teleosts were numerous and varied and 
many of the present day suborders were represented, the notable exception being the 
perciform groups (see Patterson, 1967b). The faunal composition at the base of the 
Upper Cretaceous appears to have been almost as varied. Patterson (1964, 1967a) has 
dealt extensively with the Ctenothrissiformes and the acanthopterygian faunas from 
