PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA 207 
Much field-work has been done and a considerable amount of material repre- 
senting the carnivora has been found in the lower and middle Miocene of South 
Dakota, western Nebraska, eastern Colorado and Wyoming during the past few 
years by the different museums of North America.’ Since further explorations of 
this region are likely to occur in the near future it has seemed best to postpone a 
more detailed and systematic work upon the carnivora of these localities and 
for the present only to publish the new forms recently found by the museum 
parties and especially to accurately describe the skeleton of Daphenodon superbus. 
It is believed that the study of the lower Miocene Canide will be facilitated by 
the publication of an account of the nearly complete skeleton of one individual. 
In the following description the exceptionally well preserved and almost com- 
plete skeleton of Daphanus felinus Scott (No. 492, Carnegie Museum Catalog of 
Vertebrate Fossils) which Mr. J. B. Hatcher described (Memoirs Carnegie Museum, 
Volume I, pp. 65-108) will be used for comparison. In the first place it seems 
quite certain that Daphwnus is in the direct ancestral line of Daphenodon, and 
secondly, the skeleton from the Oligocene now in the Carnegie Museum, represents 
the most complete individual of that genus as yet discovered. 
Valuable aid in this work was rendered by the authorities of the American 
Museum of Natural History and of Princeton University Museum, who courteously 
sent to the Carnegie Museum a number of types for comparison. The illustrations 
are from drawings made by Mr. Sydney Prentice and photographs by Mr. A. 8. 
Coggeshall and the author. 
Family CANIDA. 
Subfamily AMPHICYONIN2. 
Daphcenodon superbus (Peterson). 
Amphicyon superbus Peterson, Annals Carnegie Museum, Vol. IV, pp. 51-53, 
Pl. XVIII, 1908. Daphwnodon superbus (Peterson), Science, N.S., Vol. XXIX, pp. 
620-621. 
Type: Skeleton nearly complete, No. 1589, Carnegie Museum Catalog of 
Vertebrate Fossils. 
Horizon: Miocene (Lower Harrison Beds). 
Locality: Agate Spring Fossil Quarries (Quarry No. 3), Sioux County, 
Nebraska. 
Distinctive characters. —In my previous notes in Science I gave the following 
distinctive characters: Craniwm comparatively short, broad, and low; muzzle large ; 
2 Professor F. B. Loomis, of Amherst, recently discovered two miles east of the Agate Spring Fossil Quarries the 
greater portion of a fine skeleton which he regards as belonging to the same genus described below. 
