The source of inspiration for
Mr. Potato Head: Defender Of The Geologic Ecosystem.
From Webster's New Collegiate Dictionary, 1977, page 481.
Copyright © 1977 by G. & C. Merriam Co.
| Eras | Periods And Systems |
Epochs And Series |
Approximate Number of Years Ago |
Earliest Record of Animals |
Earliest Record of Plants |
| Cenozoic | Quaternary | Holocene (recent) Pleistocene (Glacial) |
Mankind |
||
| Tertiary | Pliocene Miocene Oligocene Eocene Paleocene |
70,000,000 |
|||
| Mesozoic | Cretaceous | Upper | Placental Mammals | ||
| Lower | Birds |
Grasses and Cereals |
|||
| Jurassic | 160,000,000 | Mammals | Flowering Plants | ||
| Triassic | Ginkgoes | ||||
| Paleozoic | Permian | 230,000,000 | Cycads and Conifers |
||
| Pennsylvanian | Insects | Primitive Gymnosperms |
|||
| Mississippian | Reptiles | ||||
| Devonian | 390,000,000 | Amphibians |
Vascular Plants: Lycopodiums, Equisetums, Ferns, etc. |
||
| Silurian | Fishes | ||||
| Ordovician | 500,000,000 | Mosses | |||
| Cambrian | 620,000,000 | Invertibrates |
Spores of Uncertain Relationship Marine Algae |
||
| Proterozoic | 1,420,000,000 | ||||
| Archeozoic | 2,300,000,000 |