The Triassic Fishes of New Jersey. 



BY C. R. EASTMAN,, HARVARD UNIVERSITY. 



I. Preliminary considerations. 



SUMMARY. 



PAGE. 



i. General constitution of the Triassic fish-fauna of New Jersey, 



2. Physical condition of the remains, and inferences as to probable 



causes of destruction, 68 



3. Relations of the fauna to those of other regions, 70 



4. Evidence in regard to homotaxial relations of the Newark 



series, 71 



5. Reference of the Newark series by leading authorities to the 



Uppermost Trias, 7 1 



6. Table showing correspondence between the Newark fish fauna 



and that of the Alpine Muschelkalk, 72 



II. Systematic descriptions. 



ACTINOPTERYGII. 



1. Family Semionotidce. 



Genus Semionotas, 73 



Genus Accntrophorus, 94 



2. Family Catopteridce. 



Genus Catopterus, 95 



Genus Dictyopyge, 99 



3. Family Eugnathidce. 



Genus Ptycholepis, 100 



CROSSOPTERYGII. 



1. Family Coelacanthidce. 



Genus Diplurus, 101 



PRELIMINARY CONSIDERATIONS. 



The character of the Triassic fish-fauna of the eastern United 

 States from Virginia northward is singularly homogeneous and 

 monotonous. All told, there are only half a dozen genera repre- 



(67) 



