20 THE DESEADO FORMATION OF PATAGONIA 
PER Num- : a 
SPECIES Foop COUNTRY 
CENT BER 
1 Protheosodon coniferus Grass Plains 
15 Notodiaphorus crassus 
6% 16 LiITOPTERNA 
19 Rhynchippus equinus Grass Plains 
7% 19 RHYNCHIPPIDAE 
44 Leontinia gaudryi Browse Brush plains 
15% 44 LEONTINIDAE 
2 Proadinotherium leptognathus Grass or Browse Plains 
2 Coresodon scalpridens 
1% 4 NESODONTIDAE 
7 Asmodeus osborni Browse ? 
2% 7 HOMOLADONTIDAE 
6 Parastrapotherium holmbergi Browse ? 
2% 6 ASTRAPOTHERIDAE 
11 Pyrotherium sorondoi Browse ? 
4% 11 PYROTHERIA 
55 Cephalomys arcidens 
22 Cephalomys plexus 
19 Cephalomys prorsus Hard vegetation Open country 
3 Asteromys prospicuus 
1 Scotamys antiquus 
1 Eosteiromys medianus 
1 Litodontomys chubutensis 
2 
35% 102 RODENTS 
9 Proeutatus lageniformis 
1 Prozaedius planus Insects and leaves Open country 
2  Prozaedius depressus 
3 Proeuphractus setiger 
2 Peltephilus undulatus 
1 Palaeopeltis inornatus 
5 Indeterminate 
8% 23 EDENTATA 
1 Plichenia lucina 
t Epanorthus chubutensis 
5 Callimenus praecursor Insects and flesh ? 
LS) 
Pharsophorus tenax 
Pharsophorus mitis 
3% 10 MARSUPILAIA 
3% 11 Birds Open country 
100% 293 
