390 OSBORN AND MOOK— CHARACTERS AND RESTORATION 



of Sauropoda from Canyon City was studied, among other material. 

 with the object of separating the vertebrae and Hmb bones referable 

 to Camarasaurns, Amphiccclias and the other Cope genera, and ar- 

 ranging them in series similar in size, proportion and color, as well 

 as determining the characters of Camarasaurns and Amphiccclias 

 and the less known genera. To a considerable extent this work con- 

 sisted in verification of the previous work by Doctor Matthew and 

 Professor Gregory, in modification of their results, in a few cases, 

 and in adding to them to meet the present needs. 



This research has terminated in the arrangement of the vertebrse 

 and ribs in morphological series, which may represent originally dis- 

 tinct individuals, or may not. The attempt was made to associate 

 the bones of single individuals so far as practicable, but in many 

 cases evidence for this was insufficient and in such cases an attempt 

 was made to assemble series that would be reasonably constituted in 

 a morp'hological sense. The arrangement of the bones in these series 

 is as accurate as it could be made, in view of the distorted, sometimes 

 incomplete and badly mixed character of the material. The pairing 

 of the girdle and limb bones was similarly undertaken, though no 

 attempt was made to pair the ribs. In a few cases it has been pos- 

 sible to determine the relation of some of the girdle and limb bones 

 with the vertebrae, but in most cases the original association is still 

 unknown, though their possible association is very evident. 



Carnivorous Dinosaur Material and Types. — The type of Epan- 

 terias amplcxus consists of bones of a large theropod. There are 

 some ribs among those of Camarasaurns which certainly do not agree 

 in characters with the majority of camarasaur ribs, and do resemble 

 those of the Theropoda. There is also a theropodous femur. They 

 may be provisionally referred to this form. It is possible, if not 

 probable, that the types of Tichosteus lucasanus and T. ccqnifacies, 

 also of Symphyrophus musculosns, may be referable to the The- 

 ropoda. Cope's types of La-laps trihcdrodon, Brachyrophus altar- 

 kansanus and Hypsirophus discurus were also collected at this local- 

 ity. The first of these is certainly a theropod ; the position of the 

 secotid and of the third is uncertain. 



Characters of the Genus Caniarasaurus. — The results of the in- 

 vestigations described above, include determinations of the generic 



