-
251,000 BCE
Triassic
firsts dinosaurs; rise of mammal-like reptiles
year:251,000,000 -
145,500 BCE
Cretaceous
mass extincion(including dinosaurs);flowering plants appear year:145,500,000 -
65,000 BCE
Paleocene
early mammals become dominant;rise of modern birds year:65,500,000 -
55,800 BCE
Eocene
firsts horses year:55,800,000 -
54,200 BCE
cambrian
sudden explocion of life;tribles dominant; rise of other marine invertebrates;some invertebrates
year:542,000,00 -
53,000 BCE
Pilocene
peak of mammals; modern invertebrates year:5,300,000 -
48,830 BCE
ordovician
trilobites abundant;vertebrates increase
year:488,300,000 -
41,600 BCE
Silurian
land colonized by atropods and plants
year:416,000,000 -
41,600 BCE
devonian
firsts amphibians; freshwater fish; wingless insects
year:416,000,000 -
36,900 BCE
mississippian
amphibians spread; sharks and bony fish; winged insects
year:359,200,000 -
33,900 BCE
Oligocene
primitive apes;whales;firsts modern mammals year:33,900,000 -
31,810 BCE
pennsylvanian
giant insects;firsts reptiles
year:318,100,000 -
29,900 BCE
Permian
modern insects; reptiles spread;evergreens; extinsion of trilobies
year:299,000,000 -
23,000 BCE
Miocene
rise of grazing mammals year:23,000,000 -
19,960 BCE
Jurasic
giant dinosaurs;early birds;firsts mammals year:199,600,000 -
18,000 BCE
Pleistocene
ice ages;mass exttincion;rise of man year:1,800,000 -
11,477 BCE
Recent(Holocene) epoch
end of ice age;rise of human civilization year:11,477 -
4000 BCE
Haedan
formation of earth (unnhabitable) year: over 4,000,000,000 -
4000 BCE
Archean eon
earth become habitable;spontaneous generations of firsts cells; rise of bacteria and cyno bacteria year: after 4,000,000,000 -
2500 BCE
Proterozoic eon
simple multicellular;algae and plankton develop;eukryotik cells develop
year: 2,500,000
