APPENDIX. 
bee AX XVI Principal Characters of American 
Jurassic Dinosaurs + by Professor O. C. Marsn. Part 
VUL The Order Theropoda. (With Plates VII-XIV.) 
The fortunate discovery of two nearly perfect skeletons of 
this order, as well as a number of others with various impor- 
writer 
of the results are here presented. A more detai 
of these fossils, and others allied to them, will be given i 
another communieation, ; : 
the carnivorous Dinosaurs from the American Jurassic, 
osdurus, and the new genus Ceratosaurus, r 
In the present article, Allosaurus and Ceratosaurus wil 
mainly used to illustrate the more important characters of the 
order, and the relations of the other genera te them will be 
indicated in the classification presented in conclusion. 
fa This J ournal, vol. xxiii, p. 81, January, 1882. See also vol. xxi, p. 423, May, 
81; p. 339, April, 1881; and vol. xvii, p. 89, January, 1879. 
AM. Jour, So.—Turep Series, Vou. XXVIJ, No. 160.—APRIL, 1884, 
: eae 
distinct fami A oth 
ie amily. These genera are fate described 
