CE^i^bzoic maMmaL horizons 



UPPEK EOCENE— Cbntintied. 

 ARTIODACTYIjA— Continued. 

 Camelid^ or Hypertkagulid^. 



Leptotragulus i)rciaviis S. and 0. 



?Leptotragullls sp 



Leptoreodon ? marshi Wortman. 



1. 



2. 



3. 



4. 





X 







>^ 









X 









Leptotragulus proavus S. and O . ........ X 



Leptotragulus Isevis (Marsh).......-...,..... x 



Leptotragulus sulcatus (Marsh) - .... x 



Protylopus petersoni Wortman x 



Camelomeryx longiceps Scott x 



Oromeryx plicatus Marsh | X 



Oeeodontid^. 



Protoreodon parvus S. and O i X 



Protoreodon pumilus (Marsh) x 



Protoreodon paradoxicus ( Scott) x 



Protoreodon minor Scott i x 



Protagriochcerus annectens Scott [ x 



Hyomeryx breviceps Marsh | x 



Bang@ of lldceng genera. 



[The figures show the nurnher of kriowri Species in each genus. Crosses indicate that the presence of 

 the genus Id recorded but no species have i)een described.] 



MtJLTlTUBERCtrLATA. 



Plaglaulacidae. .... 



Polymastodon . 



Catopsalis. .... 



Neoplagiaulax. 



Ptilodus 



Bolodontidae 



Chirox 



Notharetidse 



Pelycodus 



Notharctus 



Telmalestes 



Anaptomorphidae . . 



Anaptomorphus . 



Omomys 



Hemiacodon 



Euryacodon 



Washakius 



? Smilodectes 



?Microsyopidae.; 



Cynodontomys . . 



Microsyops 



CARNIVORA (CREODONTA). 



Miacidae 



Didymictis 



Viverravus 



Miacis 



Uintacyon 



Vassacyon 



Oodectes 



Vulpavus 



Gen. indesc. 



Arctocyonidae 



Clsenodon 



? Anacodon 



Palaeonictidse ( = Ambloctonidae). 



Ambloctonus . 



Palaeonictis 



Oxyaenidae 



Oxyaena 



Patriofelis 



Limnocyon 



Thinocyon 



Oxyaenodon 



Gen. indesc 



Basal. 



First 

 phase. 



Second 

 phase. 



Lower. 



Middle. 



First 

 phase. 



second First 

 phases phase. 



?2 



Second 

 phase. 



1 I 



Upper, 



First 

 phase. 



Second 

 phase. 



2 

 ?1 



