164 



UNGULATA 



ORDER VII 



than broad ; trapezium present ; facet for vestigial pollex ; Mc. II. and IV. 

 long when compared with later forms {Moropus) ; Mc. V. present ; Mt. III. 

 and IV. subequal in length. Quercy Phosphorites; France. 



Fernatherium Gervais. Distal end of metapodials with Chalicotherioid 

 articular facets. The remainder of the foot fragments Avhich constitute the 

 type appear, however, to differ much from corresponding parts of the genera 

 and species known of the family. This genus may well represent a totally 

 different group of primitive ungulates doubtfully related to the Chalico- 

 theres. Eocene ; France. 



Eomoropus Osborn. Premolar crowns simple, premolar metaconid without 

 metastylids, large hypoconid on M.^, fibula greatly reduced. Upper Eocene ; 

 "Washakie Basin, Wyoming. 



Phyllotillon Pilgrim. Inner cusp of upper premolars united to ectoloph by 

 double instead of single crest, molars long. (?) Oligocene. Nari beds, 

 Bugti Hills. 



Subfamily 2. Moropodinae. 



Distal face of astragalus articulating with navicular only ; fore and hind limbs 

 of subequal length ; trapeziu7n present ; Mc. V. present in some forms {Moropus). 



Fig. 221. 



i\/oroj)its e?a(u.s Marsh. Lower Miocene, Nebraska. Palatal aspect of skull lacking premaxilhe. 1/5. 



(After Holland and Peterson.) 



Eeprwluced by permission frovi The Memoirs of the Carnegie Museum. 



1 0.3.3. 

 ilforopws Marsh (Figs. 221, 222). Dentition ^-7^-^- Upper molars longer 



O. \J, o, o, 



than broad, external face of ectoloph relatively vertical, skull long and narrow ; 



fore feet functionally tridactyl, trapezium present ; Mc. III. longest ; dorsal 



surface of metacarpal shafts straight longitudinally. Distal face of astragalus 



articulating with navicular only ; Mt. III. and IV. of subequal length, 



fibula sometimes articulating with calcaneum, third trochanter of femur well 



developed ; fore and hind limbs of subequal length. Lower and (?) Middle 



Miocene ; Western North America. 



? ? 3.3. 

 Nestor itherium Kaup (Anrt/lotherium Gaudry) (Fig. 223). Dentition s-^o~o*' 



M- and iV^ longer than broad ; skull long and narrow ; carpus relatively 

 low, trapezium present (?), manus and pes tridactyl, shafts of metacarpals 



