MOOK, STUDY OF THE .MORRISON FORMATION 137 



Morosaurus impar Marsh 



M&r&saurus impar Marsh, N"(>tice of New Dinosaiirian Eeptiles. Amer. 

 Journ. Sci., 3rd ser., vol. xv, p. 242, 1878. 



Type locality and level, Morrison formation at Como Bluff, Wyoming. 

 Known from very imperfect material only. 



Epanterias amplexus Cope 



Epanterias amplexus Cope, A New Opisthoccelous Dinosaur. Amer. 

 Nat., vol. xii, p. 406, 1878. 



Probably from the uppermost Morrison beds near Canon City, Colorado. 

 Known from very imperfect remains. 



Amphicoeiias fragillimus Cope 



Amphiccelias fragillimus Cope, A New Species of Amphicoeiias. Amer. 

 Nat., vol. xii, p. 563, 1878. 



From the uppermost beds of the Morrison formation near Canon City, 

 Colorado. Not well known. 



Morosaurus robustus Marsh 



Morosaurus rohustus Marsh, Principal C*haracters of American Jurassic 

 Dinosaurs. Pt. I. Amer. Journ. Sci., 3rd ser., vol. xvi, p. 414, 1878. 



Type locality and level probably the Morrison formation at Como Bluff, 

 Wyoming. Parts of skull and skeleton known. 



Diplodocus longus Marsh 



Diplodocus longus Marsh, Principal Characters of American Jurassic 

 Dinosaurs. Pt. I. Amer. Journ. Sci., 3rd ser., vol. xvi, p. 414, 1878. 



From the middle beds of the Morrison formation near Canon City, 

 Colorado. Several more or less complete skeletons of this form are 

 known. 



Apatosaurus laticollis Marsh 



Apatosaurus laticollis Marsh, Principal Characters of American Juras- 

 sic Dinosaurs. Pt. II. Amer. Journ. Sci., 3rd ser., vol. xvii, p. 88, 

 1879. 



Only a small portion of the skeleton is preserved. 



Camarasaurus leptodirus Cope 



Cmiarasaurus leptodirus Cope, New Jurassic Dinosauria. Amer. Nat., 

 vol. xiii, p. 402, 1879. 



