482 Bulletin American Museum of Natural istory.  [Vol. XXXIV, 
The type shows the three molars. No. 15076 from the same horizon 
and locality has the three molars well preserved and part of the premolar 
aveolus and agrees closely with the type. A third jaw fragment with ms; 
is also referred here. | 
Nothodectes dubius gen. et sp. nov. 
Type, No. 16073, lower. jaw, with ps-m:z, from Clark Fork beds at base of bluff 
northeast of Ralston, Clark Fork basin, Wyoming. 
Family ? Apatemyide. 
hw!) YL 1 Nos 5 il oe ) 
The ul yy ML UIA 
* 
Fig. 52. Nothodectes dubtus, lower jaw, inner, outer and crown views, and outer and 
inner views of an (?) incisor found.associated. 'Type specimen, Clark Fork beds, Clark 
Fork basin, Wyoming. 
One anterior tooth enlarged, others smaller or absent. Premolars probably 
two, a diastema in front of ps. P3 two-rooted, crown broken off; ps short with high 
stout protoconid and short wide heel. Molars with short trigonid of two principal 
cusps moderately connate, and large, deeply basined heel. Paraconid vestigial 
except on mi, metaconid distinctly twinned on all molars, entoconid nearly equalling 
hvpoconid, no hypoconulid (unless on ms; where it is not Peet ead) 
Mental foramen 
indicated as beneath posterior ee of m. 
