FORT UNION OF CKAZY MOUNTAIN FIELD, MONT. 39- 



Tetraclaenodon cf. puercensis: 3 isolated upper teeth. 

 Ellipsodon aquilonius: Jaw fragment with M2. 

 Anisonchus sectorius: Jaw fragment with P4 and M]. 



Pantolambda spp.: Canine, premolar, and limb bones, perhaps of more than one 

 species. 



Subsequent discoveries at Loc. 5 include an unidentifiable multi- 

 tuberculate and other fragments, and at Loc. 6 the followdng: 



Conorydes cf. comma: 2 upper molars. 



Tetraclaenodon cf. puercensis: Upper jaw with dm*-M'. 



Pantolambda sp.: Worn and broken upper molar and limb fragments. 



Loc. 54.— Sec. 23, T. 5 N., R. 15 E. This is immediately north of 

 the Gidley Quarry and at about the same level, on the same exposure 

 as Loc. 52 but about 50 feet higher. The most nearly identifiable 

 specimens found here are an isolated lower tooth and limb bones of 

 Pantolambda sp. The rich pocket in which the Gidley Quarry is 

 developed apparently does not extend this far north. 



Loc. 1. — The Silberling Quarry is the highest mammal locality 

 definitel}" in the No. 2 beds and occurs at this position relative to the 

 other localities. It is discussed elsewhere. 



Loc. 3.— On line between sees. 11 and 14, T. 5 N., R. 15 E. The 

 horizon of this locality has not been determined, but it is in the upper 

 part of the No. 2 beds. It has yielded only one lower jaw of Tetra- 

 claenodon symholicus. 



Fort Union No. 3, or Melville 



This great upper division has numerous scattered localities, but 

 only one (the Scarritt Quarry) has yielded a fauna that can be con- 

 sidered of much value. The first two localities here listed, 15 and 70, 

 are definitel}^ in the No. 3 beds, probably in their lower part, but of 

 unknovrn relative level. The others are here arranged in the order 

 of their stratigraphic levels. 



Loc. 15. — Sec. 9, T. 5N., R. 14E. The only identifiable specimen 

 from here is a lower jaw fragment indistinguishable from Paromomys 

 maturus. The level is uncertain but is above the basal sandstone of 

 the No. 3 beds. 



Loc. 70.— Sec. 31, T. 6 N., R. 15 E. The only specimen from this 

 locality, also in the No. 3 but of doubtful level, is a lower tooth prob- 

 ably of Tetraclaenodon, but possibly Gidleyina. 



Loc. 82.— Sec. 11, T. 4 N., R. 15 E. There is some doubt about 

 this locality, as the local section is not clear, but it is probably near 

 the base of the No. 3 beds. The only identifiable specimen is asso- 

 ciated M^ and broken M^ (in the American Museum) referable to 

 Tetraclaenodon cf. puercensis. 



Loc. 53.— Sec. 14, T. 4 N., R. 15 E. This locality is immediately 

 adjacent to Loc. 82 and at the same level. It has yielded one upper 

 tooth of Claenodon cf . ferox. 



119212—37 i 



