350 The Creodonta. [Apri | 
We can read the nature of the primitive mammal, Mioclems 
ferox, in so far as the materials permit. It was an effective flesh- 
eater, and probably an eater of other things than flesh. It hada 
long tail and well-developed limbs. It had five toes all around 
and the great or first toe was not opposable to the others, and 
may have been rudimental. The feet were plantigrade and the 
claws prehensile. The fore feet were well turned outwards. The 
were, perhaps, marsupial bones, but this point is not yet certainly 
determined. The presence of a patella distinguishes it from mar 
supials in general. Its embracing glenoid cavity of the skull, ad d 
form of the inferior molars, resemble those of the Arctocy 
This species is about the size of a sheep. The bones are statt 
by Mr. Baldwin, who discovered it, to be derived from the red 
beds in the upper part of the Puerco series. : ‘ 
The genus Triisodon includes as yet but one species, the ; 
quivirensis Cope, which is only known from the rami of pe 
jaw. These bones are shorter and more robust than those of the 
coyote, and indicate an animal of perhaps the size of the be 7 
ine (Fig. 1, p. 257). It was evidently strongly carnivorous © 
diet, and was a capable biter. Its remains are from the a 
of New Mexico. v "a 
i F : wo from the asatch : 
Diacodon includes seven species, t the Poer 
(Fig. 18), while those of 
vary in dimensions fro Jt 
common weasel (D. mene ye 
of a wolf (D. conidens). oe 
; cies of the Puerco were © 
Fic. 18.—Jaws of species of he genus Tr 
Diacodon from the Wasatch ferred by me to t me 
bed be New Mexico, Fig. a, but are now more prope 
mandibular ramus, inner side, Diacodon. The only a wad 
i s2. Pip: 2; . sare pe 
D. celatus, eft aT Pha e the superior molar U we 4 
ramus, natural size; c, same, conidens, where they are : sabe 
ize. inal, . Li ih e of Mioclænus. ; 
from the Report U. S. Ġ. G. tical with thos of the first © 
ane Ne of tooth mer., G. M. Of the four genera [is 
ticle! 
sion of the Leptictid@, p 
tubercular sectorial teeth, but two are found in Now 
while three of them have been discovered in wer pol 
The typical and most widely distributed genv® "| 
