Update: 2013-02-16 10:23 PM +0630

TIL

Myanmar: Prehistory

prehist-indx

A compilation by U Kyaw Tun (UKT) (M.S., I.P.S.T., USA), and staff of Tun Institute of Learning (TIL) . Not for sale. No copyright. Free for everyone. Prepared for students and staff of TIL  Computing and Language Center, Yangon, MYANMAR :  http://www.tuninst.net , http://www.softguide.net.mm , www.romabama.blogspot.com

index.htm | |Top
prehist-indx.htm

Contents of this page

Introduction to Prehistory - intro.htm
GENERAL - gen.htm
SAMOAN valley - samoan.htm

 

UKT notes

For me as well as for Buddhists in Myanmarpré, for timing pre-historical and distant-historical events, a system of timing is needed. That well get us off the notion of timing in Christian era. 

As a tentative reference date we will adopt the {ŝa-ŝa.na.}, the year of Gautama Buddha's death -- the final passing into Nibbana 544 BC. The abbreviation used will be BE with BBE and ABE as derivatives.

From: http://en.wikipedia.org/wiki/Archaic_Homo_sapiens 130108

A number of varieties of Homo are grouped into the broad category of Archaic Homo sapiens, contrasted with anatomically modern humans (Homo sapiens sapiens), in the period beginning 500,000 years ago. [About 500 BBE.] This category typically includes Homo heidelbergensis, Homo rhodesiensis, Homo neanderthalensis, and may also include Homo antecessor.[1]

UKT: Who were the people of Mahabhata, the people who build the pyramids, and those who invented the cuneiform script? Were they not H. sapiens sapiens ? Could they be H. erectus ?

Modern humans are theorized to have evolved from archaic Homo sapiens, who in turn evolved from Homo erectus. Varieties of archaic Homo sapiens are included under the binomial name "Homo sapiens" because their brain size is very similar to that of modern humans. Archaic Homo sapiens had a brain size averaging 1200 to 1400 cubic centimeters, which overlaps with the range of modern humans. Archaics are distinguished from anatomically modern humans by having a thick skull, prominent brow ridges and the lack of a prominent chin.[1][2]

Anatomically modern humans appear from about 200,000 years ago and after 70,000 years ago (see Toba catastrophe theory) gradually marginalize the "archaic" varieties. Non-modern varieties of Homo are certain to have survived until after 30,000 years ago, and perhaps until as recent as 10,000 years ago. Which of these, if any, are included under the term "archaic Homo sapiens" is a matter of definition and varies among authors. Nonetheless, and according to recent genetic studies, modern humans seem to have bred with "at least two groups" of ancient humans: Neanderthals and Denisovans.[3] New evidence suggests another group may also have been extant as recently as 11,500 years ago, the Red Deer Cave people of China.[4]

Terminology and definition

The category archaic Homo sapiens is disputed[1] and lacks a single, agreed upon definition. According to one definition, Homo sapiens is a single species comprising several subspecies that include the archaics and modern humans. Under this definition, modern humans are referred to as Homo sapiens sapiens and Archaics are also designated with the prefix "Homo sapiens". For example, the Neanderthals are Homo sapiens neanderthalensis, and Homo heidelbergensis is Homo sapiens heidelbergensis. Other taxonomists prefer not to consider archaics and modern humans as a single species but as several different species. In this case the standard taxonomy is used, ie Homo rhodesiensis, or Homo neanderthalensis.[1]

The dividing lines that separate modern humans from archaic Homo sapiens and archaics from Homo erectus are blurry. The earliest known fossils of anatomically modern humans such as the Omo remains from 195,000 years ago, Homo sapiens idaltu from 160,000 years ago, and Qafzeh remains from 90,000 years ago are recognizably modern humans. However, these early modern humans do exhibit a mix of some archaic traits, such as moderate, but not prominent, brow ridges.

Brain size expansion

The emergence of Archaic Homo sapiens is sometimes used as an example of punctuated equilibrium.[5] This occurs when a species undergoes significant biological evolution within a relatively short period. Subsequently, the species undergoes very little change for long periods until the next punctuation. The brain size of Archaic Homo sapiens expanded significantly from 900 cubic centimeters in erectus to 1300 cubic centimeters. Since the peak of human brain size during the archaics, it has begun to decline.[6]

Origin of language

Robin Dunbar has argued that Archaic Homo sapiens were the first to use language. Based on his analysis of the relationship between brain size and hominid group size, he concluded that because Archaic Homo sapiens had large brains, they must have lived in groups of over 120 individuals. Dunbar argues that it was not possible for Hominids to live in such large groups without using language, otherwise there could be no group cohesion and the group would disintegrate. By comparison, chimpanzees live in smaller groups of up to 50 individuals.[7][8]

UKT: More in Wikipedia article.

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UKT notes

 

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End of TIL file