-
9/10 of earth's history
4.6 billion years ago to 534 million years ago
era=precambrian
eon=Proterozoic,Archeozoic and the Hadean
period=Vendian/Ediacaran
inorgaic -
Period: to
Geological time scale
-
pangea forms
4.1 billion years ago
eon=precambrian
era=
Period=Vendian/Ediacaran Period
inorganic -
only simple marine life
2.1 billion years ago to 543 million years ago
eon= precambrian
era= proterozoic, archeozoic, hadean
period=Vendian/Ediacaran
organic -
first abundant fish
408 million years ago
eon=Phanerozoic
era=Paleozoic
period=Devonian
organic -
human ozarks uplifted
541 million years ago
eon=precambrian
era=proterozoic, archeozoic, hadean
period=Vendian/Ediacaran Period
inorganic -
Trilobites Abundant
540 to 500 million years
eon=Phanerozoic
Era=Paleozoic
Period=Cambrian
Organic -
coal depostis form
290 million years ago
eon=phanerozoic
era=paleozoic
period=Pennsylvanian
inorganic -
first forests
375 million years ago
eon=phanerozoic
era=paleozoic
period= devonian
organic -
age of the reptiles
325 million years ago
eon=phanerozoic
era=paleozoic
period=Carboniferous, pennsylvanian
organic -
missouri covered by seas
544 million years ago
eon=phanerozoic
era=paleozoic
period=cambrian
inorgainc -
appalachian mountains form
300 million years ago
eon= phanerozoic
era=paleozoic
period=devonian
inorganic -
age of dinosaurs
248 to 65 million years ago
eon=phanerozoic
era=mesozoic
period=triassic, jurassic, cretaceous
organic -
crinoids abundant in MO.
325 million years ago
eon=phanerozoic
era=paleozic
period=mississippian
organic -
pangea breaks apart
245 million years ago
eon=phanerozoic
era=mesozoic
period=triassic, jurassic, cretaceous
inorganic -
last major uplifts of ozarks
298 million years ago
eon=phanerozoic
era=paleozoic
period=pennslyvanian
inorgaic -
ancient bird
208 million years ago
eon= phanerozoic
era=mesozoic
period=triassic
organic -
steep bluffs form along rivers (Mo.)
295 million years ago
eon=phanerozoic
era=paleozoic
period=Carboniferous
inorganic -
rocky mountains form
146 million years ago
eon=phanerozoic
era=paleozoic
period=creataceous
inorganic -
ozarks eroded and covered repeatedly
69 million years ago
eon=phanerozoic
era=paleozoic
period=paleogene
inorganic -
age of mammals and birds
65 million years ago
eon=Phanerozoic
era=Cenozoic
period=Tertiary, Paleogene, Neogene
organic -
Himalaya mountains form
24 million years ago
eon=phanerozoic
era=paleozoic
period=neogone
inorganic -
superlarge mammals
20 million years ago
eon=phanerozoic
era=cenozoic
period=Tertiary, Neogene
organic -
volcanic activity in S.E. MO.
30 million years ago
eon=phanerozoic
era=paleozoic
period=paleogene
inorganic -
most recent ice ages
20,000 years ago
eon=phanerozoic
era=cenonzoic
period=Quaternary
inorganic