CLASSIFICATION gI 
Group. TILLODONTIA—Tillodonts, 
Fam. Anchippodontidze—Anchippodus. 
Calamodontidz—Calamodon. 
Order vii. RopENTIA—Rodents. 
Suborder 1. SIMPLICIDENTATA. 
Fam. 1. Anomaluride—Anomalurus. 
2. Sciuride—Squirrels and Marmots. 
3. Haplodontide—Haplodon. 
4, Ischyromyide—Ischyromys. 
5. Castortdee—Beavers. 
6. Myoxide—Dormice. 
7. Lophiomyide—Lophiomys. 
8. Muride—Rats, Mice, and Voles. 
9. Spalactde—Mole-rats. 
10. Geomyide—Pouched Rats. 
11. Dipodide—Jerboas. 
12. Theridomyide—Theridomys. 
13. Octodontide—Spiny Mice. 
14. Castoroididze—Castoroides, 
15. Hystricide—Porcupines. 
16. Chinchillide—Chinchillas. 
17. Dinomyide—Dinomys. 
18. Cavitde—Cavies. 
19. Dasyproctide—Agouties. 
Suborder 2. DuPLICIDENTATA. 
Fam. 20. Lagomyide—Picas. 
21. Leporide—Hares and Rabbits. 
Order viii. CARNIVORA—Carnivores. 
Suborder 1. Carnivora VERA—Fissipedes. 
Fam. 1. Felide-—Cats. 
. Hyenide—Hyeenas. 
. Proteleide—Earth-wolf. 
. Viverride—Civets and Ichneumons. 
. Canide—Wolves and Foxes. 
. Urside—Bears. 
. Mustelide—Weasels and Otters. 
. Procyonide—Racoons and Cat-bear. 
Suborder 2. Prnnipep1a—Pinnipedes. 
Fam. 9. Otartide—Eared Seals. 
10. Trichechide—Walrus. 
11. Phocide—Seals. 
Suborder 3. CREODONTA—Creodonts. 
Fam. 12. Hyenodontide—Hyznodon. 
13. Proviverride—Proviverra. 
14, Arctocyonidze— Arctocyon. 
15. Mesonychidze—Mesonyx. 
ODIDoapP wD 
