NO. 8 UPPER EOCENE ARTIODACTYLA — GAZIN *]*] 



MALAQUIFERUS TOURTELOTI," new species 

 Plate 1 6 



Ty/J^.— Greater part of skull with P^-M^, inclusive, U.S.N.M. 

 No. 20588. 



Horizon and locality. — Uintan deposits in sec. 11, T. 39N., R. 92 

 W., i^ miles northeast of east fork of Dry Creek, Fremont County, 

 Wyo. 



Specific characters. — Malaqiiiferus tourteloti is comparable to Pro- 

 toreodon petersoni in size of teeth, although the cranial proportions 

 indicate a form somewhat greater in size. Other specific characters 

 are not distinguished from those of the genus. The lower teeth are 

 not known. 



Discussion. — The type specimen of this rather unusual oromerycid 

 was found by Harry A. Tourtelot, of the U. S. Geological Survey, in 

 upper Eocene deposits exposed along the northern margin of the 

 Wind River Basin, not far from and possibly equivalent in age to the 

 fossiliferous exposures along the south side of Bad water Creek west 

 of Badwater P. O. Further search of the exposures in the vicinity of 

 the Malaquiferus occurrence for confirming evidence as to the age of 

 the beds has produced remains of Eomoropus, cf. amarorum. 



MEASUREMENTS IN MILLIMETERS OF DENTITION IN TYPE SPECIMEN OT 



Malaquijerus tourteloti, u.s.n.m. no. 20588 



Length of preserved portion of upper cheek tooth series, P*-M^ in- 

 clusive 27.1 



Upper molar series, M^-M', inclusive 21.7 



P*, anteroposterior diameter : transverse diameter* 5.8 : 6.5 



M\ anteroposterior diameter : transverse diameter* 6.8 : 7.8 



M*, anteroposterior diameter : transverse diameter 7.4 : 8.8 



M', anteroposterior diameter : transverse diameter 7-5 : 9-0 



* Measurements of posterior upper premolars are taken anteroposteriorly across outer por- 

 tion and transversely perpendicular to outer margin. Those of upper molars are taken 

 anteroposteriorly perpendicular to anterior margin and transversely across anterior portion 

 of tooth. 



Family CAMELIDAE Gray, 1821 



Subfamily Poebrotheriinae Zittel, 1893 



Attention was early directed to the possibility of camelids occurring 

 in the Eocene of North America when Scott in 1889 suggested that 

 Leptotragulus was closely allied to Poehrotherium and belonged in 

 the Tylopoda. This genus, however, is now regarded as a lepto- 

 merycid. Some time later (1898), Wortman described Protylopus, 



^1 Named for Harry A. Tourtelot. 



