1910.] Taxonomic History of the Ungulata. 349 



1872. Gill. 



Order Ungulata. 



Suborder Artiodactyla. 



Superfamily Chalicotheroidea (Artiodactyli ? Incertae sedis). 

 Pecora. 



Superfamily Cameloidea. Fam. Camelidse. 

 Superfamily Giraffoidea. Fam. GirafRdte. 



Superfamily Booidea. Fam. Saigiidse, Bovidas (Subfam. Boviuoe, 

 Ovibovinne, Antilopinse, Capriiiis, Ovinse), Fam. Antilocap- 

 ridse, CervidfB (subfam. Cervinse, Cervulinae, Moschinse). 

 Superfamily Traguloidea. Fam. Tragulidffi. 

 Superfamily ? Sivatheroidea. Fam. Sivatheriidse. 

 Superfamily ? Helladotheroidea. Fani. Helladotheriidse. 

 Superfamily Oreodontoidea. Fam. Oreodontidse. (Subfam. Ore- 



odontince, Agriochoerinse.) 

 Superfamily Anoplotheroidea. Fam. Anoplotheriidse, Dicho- 

 bunidse (CiJenotherium, Dichobune, Xiphodon). 

 Omnivora. 



Superfamily Merycopotamoidea. Fam. Merycopotamidse, Hippo- 



potamidse (Subfam. Hippopotaminje, Choeropsinse). 

 Superfamily Setifera. Fam. Phacochcerida?, Suidae, Dicotylidte. 

 Superfamily Anthracotheroidea. Fam. AuthracotheriidiB (Sub- 

 fam. Hyoptaminae, AnthracotheriiiiEe) . 

 Extinct Omnivora ? Incertae sedis. Choeropotamus, Palseochoe- 

 rus, Choeromorus, Entelodon, Heterohyus, Acotherulum, 

 Choerotherium = Tetraconodon. 

 Suborder Perissodactyla. 



Superfamily Anchippodontoidea. Fam. Anchippodontidae (An- 



chippodus = Trogosus). 

 Superfamily Solidungula. Fam. Equidse (Equus, Asinus (Asinus 

 sensu strictu, Hippotigris)). AnchitheriidiB (Anchitherium, 

 Hypohippus, Parahippus, Anchippus). 

 Superfamily Pliolophoidea. Fam. Pliolophidse (Hyracotherium). 

 Superfamily Rhinocerotoidea. Fam. Rhinocerotidse [African and 

 Asiatic rhinoceroses separated generically (following Gray).] 

 Macraucheniidae, Palseotheriidse (Palseotherium, Paloplothe- 

 rium, etc.). 

 Superfamily Lophiodontoidea. Fam. Tapiridre (Elasmognathus, 

 Tapirus, Rhinochoerus) . Lophiodontidaj (Lophiodon, Coiy- 

 phodon, Listriodon, Pachynolophus, Lophiotherium, Tapi- 

 rulus Anchilopus). 

 Perissodactyli Incertse sedis. Fam. Elasmotheriida?. 

 Ungulata ? Incertse sedis Stereognathus Owen. 

 Order Toxodontia. 



Fam. Nesodontidae, Toxodontidae. 

 Order Hyracoidea. Fam. Hyracidse. 



Order Proboscidea. Fam. Elephantidse (Subfam. Elephantinae, Masto- 

 dontinff) Dinotheriidse. 



