NO. 8 UPPER EOCENE ARTIODACTYLA — GAZIN VJ 



Protoreodon paradoxicus (Scott), 1898 



Protoreodon minor Scott, 1899 



Protoreodon primus (Peterson), 1934 



Protoreodon petersoni, new species 

 Diplobunops Peterson, 191 9 



Diplobunops matthewi Peterson, 1919 



Synonyms : Diplobunops uint crisis Peterson, 1931 

 Diplobunops ultimus Peterson, 1931 



Diplobunops crassus Scott, 1945 



Diplobunops vanhouteni, new species 

 OROMERYCIDAE, new family 

 Oromeryx Marsh, 1894 



Oromeryx plicatus Marsh, 1894 

 Protylopus Wortman, 1898 



Protylopus petersoni Wortman, 1898 



Protylopus? annectens Peterson, 1919 

 Camelodon Granger, 1910 



Camelodon arapahovius Granger, 1910 

 Malaquiferus, new genus 



Malaquiferus tourteloti, new species 

 CAMELIDAE Gray, 1821 



POEBROTHERIINAE Zittcl, 1893 



Poebrodon, new genus 



Poebrodon kayi, new species 

 LEPTOMERYCIDAE Scott, 1899 

 Leptoteagulinae Zittel, 1893 

 Leptotragulus Scott and Osborn, 1887 

 Synonym: Parameryx Marsh, 1894 

 Leptotragulus proavus Scott and Osborn, 1887 

 Synonyms : Parameryx laevis Marsh, 1894 

 fParameryx siilcatus Marsh, 1894 

 Leptotragulus medins Peterson, 1919 

 Leptotragulus clarki, new species 

 Leptoreodon Wortman, 1898 



Synonyms : Merycodesmus Scott, 1898 

 Camelomeryx Scott, 1898 

 Leptoreodon marshi Wortman, 1898 



Synonyms: Merycodesmus gracilis Scott, 1898 

 Camelomeryx longiceps Scott, 1898 

 Leptoreodon (Hesperomeryx) edwardsi Stock, 1936 

 Poabromylus Peterson, 193 1 

 Poabromylus kayi Peterson, 1931 



In an attempt to simplify characterizations or present them in a 

 usable form there is given on the following pages a synoptic arrange- 

 ment in the form of a key, including all the recognized genera for 

 the North American Eocene. The key is divided into two parts: 

 First a systematic arrangement is made conforming in a general way 

 to the classification, and following this a topical presentation is given 

 in which the various Eocene genera and subfamilies are listed accord- 



