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CONTENTS of entire timeline

CONTENTS of 59,999,999 BC- 51,000 BC Large land and aquatic mammals appear; many kinds of primates appear (almost as many go extinct); an island continent finally disappears for good; the Mediterranean valley turns into the Mediterranean Sea; human beings emerge, develop housing, clothes, lamps, and drugs, breed dogs, use horses; Mars dies (or goes dormant)

This page last updated on or about 10-31-05
a - j r m o o n e y h a m . c o m - o r i g i n a l


Approximately 2,500,000 BC: Some primordial humanoids are now butchering and eating meat; Bonobos are diverging genetically from the other chimpanzees

The "Australopithecus garhi" variant of human ancestor is living in what'll be known in the 20th century as Ethiopia.

The variant appears to have characteristics somewhere between those of the earlier Australopithecus afarensis and later Homo habilis.

-- "Meat-Eating Missing Link Fossil Found In Africa" By Maggie Fox, Health and Science Correspondent; http://dailynews.yahoo.com/; News Science Headlines Friday April 23 1999, Reuters Limited

The ancestors of 20th century bonobo chimps are diverging genetically from other chimpanzees now; the Homo lineage of human predecessors with larger brains is also branching off from the Australopithecine line now

One human generation is considered by many (circa the 20th century) to be 25 years.

-- Climate Instability and Hominid Brain Evolution by William H. Calvin, Abstract of 18 June 1998 talk for American Geophysical Union's Chapman Conference, Mechanisms of Millennial-Scale Global Climate Change. University of Washington, Seattle WA 98195-1800; ph. 206-328-1192; fax 206-720-1989; Web http://WilliamCalvin.com; Internet: wcalvin@u.washington.edu

See also http://WilliamCalvin.com/1990s/1998AGU/

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