-
120
Appearance of flowering plants
-
Period: 150 to 200
Jurassic Period
-
202
Fourth mass extincton
-
Period: 205 to 250
Triassic Period
-
240
The fiirst dinasours and mammals
-
250
Third mass extinction
-
Period: 250 to
Permian Period
-
350
Early reptiles
-
360
Second mass extinction
-
Period: 360 to 410
Devonian Period
-
370
Early amphibians
-
400
Bony fishes become abundant.
-
440
First mass extinction
-
440
Plantsand anthropods invade land; jawed fishes first appear.
-
Period: 445 to 505
Ordovician Period
-
500
Animal diversity abounds; first jawless fishes
-
Period: 500 to Jan 1, 600
Cambrian Period
Origin of all major animal phyla -
Period: 500 to 525
Ordovician Period
-
Period: 505 to 540
Cambrian Period
-
520
Origin of all major animal phyla
-
Period: 525 to 540
Precambrian Era
-
Period: Jan 23, 600 to
Precambrian Era
-
Jan 1, 700
Earliest multicellular organisms
-
Jan 1, 1000
Diverse protists
-
Jan 1, 1500
First eukaryotes
-
Jan 1, 1500
Early eukaryotes
-
Appearance of Australopithecus
-
Mammals abundant on land
-
Major mammal groups evolve
-
Birds and mammals spread
-
Fifth mass extinction
-
Period: to 445
Silurian Period
-
Period: to 360
Carboniferous Period
-
Origin of O2 by photosynthesis
-
Earliest fossil bacteria