Geological Time
Geological periods and time scale.
Sponsored Links
| Periode - Epoch | Beginning - End (106 years) | |||
|---|---|---|---|---|
| Cenozoic era | ||||
| Quaternary | Holocene | 0 - 0.0115 | ||
| Pleistocene | 0.0115 - 1.81 | Homo erectus - the evolution of anatomically modern humans | ||
| Tertiary | Pliocene | 1.81 - 5.3 | The first recognizable hominins, the australopithecines, appeared | |
| Mioscene | 5.3 - 23 | Origin of grass | ||
| Oligoscene | 23 - 34 | Rise of cats, dogs, pigs | ||
| Eoscene | 34 - 56 | Hoofed animals | ||
| Paleoscene | 56 - 65 | Primates | ||
| Mesozoic era | Cretaceous | 645 - 145 | Demise of dinosaurs | |
| Jurassic | 145 - 200 | First birds | ||
| Triassic | 200 - 251 | Many major groups of dinosaurs emerged | ||
| Paleozoic era | Permian | 251 - 299 | Flowers, insect polination | |
| Carboniferous | 299 - 359 | First conifers | ||
| Devonian | 359 - 416 | First vertebrates ashore | ||
| Silurian | 416 - 444 | Spore-bearing plants | ||
| Ordovician | 444 - 488 | Vertebrates appear | ||
| Cambrian | 488 - 542 | Most animal life aquatic | ||
| Pre-Cambrian | Pre-cambrian III (Proterozoic) | 542 - 2500 | The first advanced single-celled, eukaryotes and multi-cellular life, first plant, jellyfish | |
| Pre-Cambrian II (Archean) | 2500 - 3850 | Photosyntetic bacteria | ||
| Pre-Cambrian I (Hadean) | 3850 - 4600 | Earth formed 4600 million years ago | ||
Sponsored Links
Related Topics
-
Basics
The SI-system, unit converters, physical constants, drawing scales and more.
Related Documents
-
Minerals - Densities
Densities of minerals. -
Minerals and other Materials - Specific Gravities
Specific gravities for minerals and other materials. -
Soil - Water Content
Water or moisture content in soil. -
Soil and Rock - Bulk Factors
Soil and rock expansion - or swell - after mining. -
Yield Structure of Crude Oils with Increasing Density of Crude
Yields of different crude oil distillation cuts are plotted as function of whole crude specific gravity. Fractions based on European and North American markets, and the typical differences in crude oil fractionation in the two markets are also shown.
