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Period: to
Earths Lifespan
This Calender year represents earths lifespan. January represents the begining/early years of Earth, also known as the Precambrian Era. December will represent the Cenozic Era, which is still going on today. -
Period: to
Precambrian Era
*Climate: Began cold, and grew warmer all over earth
- The continents were just begining to form
- No plants or animals on lans *Animals: Explosion of water animals
-inverterbrates (no backbones) -
Period: to
Archaen Period
began 4.6 bya and ended 2.5 bya -
Bombardment of the Earth by planetesimals stops
4bya -
Period: to
Proterozoic Period
began 2.5 bya and ended 546 mya -
Fossils of Ediacaran organisms are made
580-545 mya -
Period: to
Paleozoic Era
*Climate: The Early Cambrian climate moderate at first,and became warmer, middle paleozoic was the Ice Age. *Animals Life: sudden appearance of invertebrate animal phyla *Plant Life: Carboniferous Period -
Period: to
Cambrian Period
began 546 mya and ended 510 mya -
Cambrian explosion of hard-bodied organisms
545 mya -
Fossilization of the Burgess Shale
517 mya -
Period: to
Ordovician Period
began 510 mya and ended 439 mya -
Rise of the fish--first vertebrates
500-450 mya -
Period: to
Silurian Period
began 439 mya and ended 408 mya -
Waxy coated algae begin to live on land
430 mya -
Period: to
Devonian Period
began 408 mya and ended 362 mya -
Millipedes have evolved--first land animals
420 mya -
The Appalachian mountains are formed via a plate tectonic collision between North America, Africa, and Europe
375 mya -
Appearance of primitive sharks
375 mya -
Period: to
Mississippian Period
began 362 mya and ended 323 mya -
Rise of the amphibians
350- 300 mya -
Period: to
Pennsylvanian Period
began 323 mya and ended 290 mya -
Rise of the reptiles
300-200 mya -
Period: to
Permian Period
began 290 mya and ended 245 mya -
Beetles and weevils have evolved
280 mya -
Permian period mass extinction
250 mya -
Period: to
Mesozoic Era
*Climate: Warm all around *Animal Life: Dominated by large reptiles, dinosuars and large aquatic reptiles -
Period: to
Triassic Period
began 245 mya and ended 208 mya -
Modern ferns have evolved
225 mya -
Roaches and termites have evolved
230 mya -
Period: to
Jurassic Period
began 208 mya and ended 146 mya -
Pangaea starts to break apart
200 mya -
Appearance of mammals
200 mya -
Period: to
Cretaceous Period
began 146 mya and ended 65 mya -
Archaeopteryx walks the Earth
145 mya -
Modern sharks have evolved
90 mya -
extinction dinosaurs
65 mya -
Beginning of the reign of mammals
65 mya -
Period: to
Cenozoic Era
*Climate: Period of long term cooling *Animal Life: Rise of mammals *Plant Life: Age of flowering plants -
Period: to
Tertiary Period
began 65 mya and ended 1.6 mya -
Australopithecus exist
4.6 mya -
Period: to
Quaternary Period
began 1.6 mya and is still going on today -
Homo sapiens neanderthalensis exist
.2-.03 mya
