Supplemental Lecture (97/05/04 update) by Stephen T. Abedon (abedon.1@osu.edu)
millions of years |
event |
4500 |
origin of earth |
200+ |
appearance of mammals |
200+ |
appearance of dinosaurs |
150 |
appearance of birds |
80 |
appearance of tree shrew-like primate progenitor |
65 |
meteor strikes earth leading to extinction of dinosaurs |
65 |
end of the Cretaceous period |
65 |
beginning of the Tertiary period |
65 |
beginning of the "age of mammals" |
40 |
appearance of primates |
36 |
appearance of monkeys |
25 |
appearance of apes |
~10 |
appearance of gibbons as separate lineage |
~8 |
appearance of orangutans as separate lineage |
~7 |
appearance of gorillas as separate lineage |
~5 |
appearance of chimpanzees as separate lineage |
~5 |
appearance of hominids |
~4 |
appearance of Australopithecus afarensis |
~4 |
appearance of bipedalism |
~3+ |
genus Homo and genus Australopithecus diverge |
~2 |
appearance of Homo habilis |
~2- |
appearance of Homo erectus |
~1+ |
control of fire |
~1+ |
the last of the australopithecines goes extinct |
~0.5 |
appearance of Homo sapiens |
~0.1 |
appearance of anatomically modern Homo sapiens |
~0.1 |
burial of the dead |
~0.03+ |
appearance of drawing and protowriting |
~0.01 |
appearance of civilization |
~0.005 |
appearance of writing |
~0.001 |
Magna Charta |
~0.0002 |
declaration of independence |
~0.00003 |
space travel (and The Beatles!) |
~0.00002 |
hand-held calculators |
~0.00001 |
personal computers |
~0.000001 |
world wide web |