Historical Dates Flashcards
Circa 4.5 Billion B.C.
Formation of the Earth
Circa 3 Billion B.C.
First signs of life appear in Oceans
Circa 600 Million B.C.
Earliest date to which fossils can be traced.
Circa 4.4 million B.C.
Earliest known hominid fossils (Ardipithecus ramidus) found in Aramis, Ethiopia, 1994.
Circa 4.2 million B.C.
Australopithecus anamensis found in Lake Turkana, Kenya, 1995.
Circa 3.2 million B.C.
Australopithecus afarenis (nicknamed “Lucy”) found in Ethiopia, 1974.
Circa 2.5 million B.C.
Homo habilis (“Skillful Man”). First brain expansion; is believed to have used stone tools.
Circa 1.8 million B.C.
Homo erectus (“Upright Man”). Brain size twice that of Australopithecine species.
Circa 1.7 million B.C.
Homo erectus leaves Africa.
Circa 230,000 B.C.
Earliest possible date of Mitochondrial Eve
Circa 100,000 B.C.
First modern Homo sapiens in South Africa.
Circa 70,000 B.C.
Neanderthal man (use of fire and advanced tools).
Circa 35,000 B.C.
Neanderthal man replaced by later groups of Homo sapiens (i.e., Cro-Magnon man, etc.).
Circa 18,000 B.C.
Cro-Magnons replaced by later cultures.
Circa 16,000 B.C.
Earliest possible date of Proto-Afroasiatic Language