MATTHEW, PATAGONIA AND PAMPAS CENOZOIC 
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Incertae sedis. 
Trigo?iostylops; Notostylops. These genera are fairly well known, but 
their affinities with any of the recognized orders are not very clear, 
and certainly not close. 
Homalodotheria. 
Albertogaudrya. 
II. Pyrotherium Fauna. 
Marsupialia (Polyprotodontia). 
Pharsophorus (Borhysenidse). 
Marsupialia (Diprotodontia). 
Parabderites, Pseudhalmariphus etc. (Epanorthkke). 
Rodentia. 
Cephalomys (Hystrieomorpha, dentition quite progressive). 
Edentata. 
Peltephilus, Prodasypus, Palceopeltis (Dasypoid and Glyptodont genera; 
Gravigrada rare). 
Homalodotheria. 
As mode us, Leontinia. 
? Rhynchippus (cf. also Toxodontia). 
Pyrotheria. 
Pyrotherium, Liarthrus. 
Astrapotheria. 
Parcistrapotherium etc. 
Litoptema. 
D enter otherium, Protheosodon etc. 
Toxodontia (including Typotheria). 
Propachyrucos etc. 
Archceohyrax etc. 
Hegetotheriidse, Eutrachytheriidse. 
III. Santa Cruz Fauna. 
Marsupialia (Polyprotodontia). 
Microbiotheriuvi, Eodidelphys (related to Didelphis). 
Borhycena, Prothyl acinus, Cladosictis, Amphiproviverra etc. 
Marsupialia (Diprotodonta). 
Epanorthus, Abderites, Acdestis, Callomenus, Garzonia, Halmariphus, 
Stilotherium. (Epanorthidse, related to Coenolestes). 
Primates. 
Homunculus etc. 
