Triassic. : 21. Monotrema. Promammalia. : 21. Ornithodelphia. Echidna.
Ornithorhyncus.
Jurassic. : 22. Marsupalia. Prodidelphia. : 22. Didelphia. Didelphys.
Perameles.
Cretaceous. : 23. Mallotheria. Prochoriata. : 23. Insectivora.
Erinaceida. (Ictopsida +.)
Older Eocene. : 24. Lemuravida. Older lemurs. Dentition. 3. 1. 4. 3. : 24. Pachylemures. (Hyopsodus +), (Adapis +).
Neo-Eocene. : 25. Lemurogona. Later lemurs. Dentition. 2. 1. 4. 3. : 25. Autolemures. Eulemur. Stenops.
Oligocene. : 26. Dysmopitheca. Western apes. Dentition. 2. 1. 3. 3. : 26. Platyrrhinae. (Anthropops +), (Homunculus +).
Older Miocene. : 27. Cynopitheca. Dog-faced apes (tailed). : 27.
Papiomorpha. Cynocephalus.
Neo-Miocene. : 28. Anthropoides. Man-like apes (tail-less). : 28.
Hylobatida. Hylobates. Satyrus.
Pliocene. : 29. Pithecanthropi. Ape-men (alali, speechless). : 29.
Anthropitheca. Chimpanzee. Gorilla.
Pleistocene. : 30. Homines. Men, with speech. : 30. Weddahs.
Australian negroes.