[2A.—MAN'S GENEALOGICAL TREE—First Half]
EARLIER ANCESTRAL SERIES, WITHOUT FOSSIL REMAINS, BEFORE THE SILURIAN PERIOD
| Chief Stages. | Ancestral Stem-Groups. | Living Relatives of our Ancestors. | Paleon- tology. | Onto- geny. | Morph- ology. | |
| Stages 1-5: Protist- Ancestors Unicellular organisms | { | 1. Monera (Plasmodoma) without nuclei | 1. Chromacea (Chroococcus) Phycochromacea | O | I? | I |
1-2: Plasmodomous Protophyta | { | 2. Algaria Unicellular algæ with nuclei | 2. Paulotomea Palmellacea Eremosphaera | O | I? | I |
| { | 3. Lobosa Unicellular (Amœboid) Rhizopods | 3. Amœbina Amœba Lecocyta | O | II | II | |
| 3-5: Plasmophagous Protozoa | { | 4. Infusoria (Unicellular) Zoomonades | 4. Flagellata Euflagellata | O | ? | II |
| { | 5. Blastæades Multicellular cell-colonies Blastula? | 5. Catallacta Magosphaera Volvocina | O | III | III | |
| Stages 6-11: Invertebrate Metazoa- Ancestors | { | 6. Gastræades with two germinal layers | 6. Gastrula Hydra, Olynthus, Orthonectida | O | III | III |
6-8: Cœlenteria, without anus or body-cavity | { | 7. Platodes I. Platodaria (without nephridia) | 7. Cryptocœla (Convoluta) (Proporus) | O | ? | I |
| { | 8. Platodes II. Platodinia (with nephridia) | 8. Rhabdocœla (Vortex) (Monotus) | O | ? | I | |
9-11: Vermalia, with anus and body-cavity | { | 9. Provermalia Rotatoria Primitive worms | 9. Gastrotricha Trochozoa Trochophora | O | ? | I |
| { | 10. Frontonia (Rhynchelminthes) Snouted worms | 10. Enteropneusta Balanoglossus Cephalodiscus | O | ? | I | |
| { | 11. Prochordonia Worms with chorda | 11. Copelata Appendicaria | O | II | II | |
Stages 12-15: Monorrhina- Ancestors Earliest vertebrates, without jaws or pairs of limbs, with single nostril | { | 12. Acrania I. (Prospondylia) | 12. Larvæ of Amphioxus | O | III | II |
| { | 13. Acrania II. Later skull-less animals | 13. Leptocardia Amphioxus (Lancelet) | O | I | III | |
| { | 14. Cyclostoma I. (Archicrania) | 14. Larvæ of Petromyzon | O | III | II | |
| { | 15. Cyclostoma II. Later round- mouthed animals | 15. Marsipobranchia Myxinoides Petromyzontes | O | I | III | |
[2B.—MAN'S GENEALOGICAL TREE—Second Half]
LATER ANCESTRAL SERIES, WITH FOSSIL REMAINS, BEGINNING IN THE SILURIAN
| Geological Periods. | Stem-Groups of Ancestors. | Living Relatives of our Ancestors. | Paleon- tology. | Onto- geny. | Morpho- logy. | |
| Silurian | { | 16. Selachii Primitive fishes Proselachii | 16. Notidanides Chlamydoselachus Heptanchus | I | II | III |
| Silurian | { | 17. Ganoides Plated fishes Proganoides | 17. Accipenserides Sturgeon, Polypterus | II | I | II |
| Devonian | { | 18. Dipneusta Paladipneusta | 18. Neodipneusta Ceratodus, Protopterus | I | II | II |
| Carboniferous | { | 19. Amphibia Stegocephala | 19. Phanerobranchia and Salamandrina (Proteus, Triton) | III | III | III |
| Permian | { | 20. Reptilia Proreptilia | 20. Rhyncocephalia Primitive lizards Hatteria | III | II | II |
| Triassic | { | 21. Monotrema Promammalia | 21. Ornithodelphia Echnida Ornithorhyncus | I | III | III |
| Jurassic | { | 22. Marsupialia Prodidelphia | 22. Didelphia Didelphys, Perameles | I | II | II |
| Cretaceous | { | 23. Mallotheria Prochoriata | 23. Insectivora Erinaceida (Ictopsida+) | III | I | I |
| Older Eocene | { | 24. Lemuravida Earlier lemurs Dent. 3, 1, 4, 3 | 24. Pachylemures (Hypopsodus+) (Adapis+) | III | I? | II |
| Later Eocene | { | 25. Lemurogona Later lemurs Dent. 2, 1, 4, 3 | 25. Autolemures (Eulemur) (Stenops) | II | I? | II |
| Oligocene | { | 26. Dysmopitheca Western apes Dent. 2, 1, 3, 3 | 26. Platyrrhinæ (Anthropops+) (Homunculus+) | I | I | II |
| Older Miocene | { | 27. Cynopitheca Baboons (tailed) | 27. Papiomorpha (Cynocephalus) | I | I | III |
| Later Miocene | { | 28. Anthropoides Anthropoid apes (tailless) | 28. Hylobatida Hylobates Satyrus | I | II | III |
| Pliocene | { | 29. Pithecanthropi Ape-like men (alali = speechless) | 29. Anthropitheca Chimpanzee Gorilla | II | III | III |
| Pleistocene | { | 30. Homines (loquaces = with speech) | 30. Weddahs Australian natives | I | III | III |