106 COPE 



^^, Carpal and tarsal bones alternating ; 

 faceted. 



Anterior limbs prehensile ; mandibular 



condyle and mastication transverse ; (9) Chalieotheria. 



AAA. Posterior limbs present ; ungual phalanges 

 not compressed and hooked.J (Ungulata.) 



/3, Carpal, and usually tarsal bones in linear 

 series.§ 



Limbs ambulatory ; teeth with enamel ; (10) Taxeopoda. 



/3/9, Carpal bones alternating externally ; 

 tarsals in linear series. 



Limbs ambulatory, median digits 



longest ; teeth with enamel ; (11) Toxodontia. 



fij3^, Tarsal bones alternating ; carpals linear 

 or reversed diplarthrous. 



Cuboid bone partly supporting navicu- 

 lar, not in contact with astragalus ; 

 no canine teeth ; (12) Proboscidea. 



/3/9/3j8, Both tarsal and carpal series more or 

 less alternating ; the distal row inwards. 



Os magnum not supporting scaphoides ; 

 cuboid supporting astragalus ; su- 

 perior molars tritubercular ; (13) Amblypoda. 



Os magnum supporting scaphoides ; su- 

 perior molars quadritubercular ; || (14) Diplarthra. 



The geological range of these orders is as follows : 



* Except Mesonychidse, some Glires, and posterior feet of some Edentata. 

 tExcept Talpa and Erinaceus. JExcept in the Hapalidae. gExeept in Dendrohyrax. 

 IIExcept Pautolestidae. 



