Encyclopedia of Evolution.pdf - Online Reading Center
Encyclopedia of Evolution.pdf - Online Reading Center
Encyclopedia of Evolution.pdf - Online Reading Center
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
0 Cro-Magnon<br />
areas, perforated shells in others, sculptures in others, limestone<br />
engravings in yet others. Different caves even bore the<br />
mark <strong>of</strong> individual artists. The oldest known cave, Chauvet<br />
in France, has about 260 paintings, many <strong>of</strong> them <strong>of</strong> rhinoceroses.<br />
The rhinoceros is rare among the paintings in other<br />
caves. The Chauvet rhinoceros paintings have a distinctive<br />
type <strong>of</strong> horn and ears, which anthropologists interpret as<br />
the work <strong>of</strong> a single artist. By comparison, the culture <strong>of</strong> the<br />
Neandertals, revealed only by their stone tools, was more<br />
geographically uniform.<br />
A closer examination <strong>of</strong> the evidence called into question<br />
the idea that Cro-Magnons had evolved from Neandertals.<br />
• There were no clear examples <strong>of</strong> humans intermediate<br />
between Neandertals and Cro-Magnons. Some traits <strong>of</strong><br />
some remains appeared intermediate, but the vast majority<br />
<strong>of</strong> specimens <strong>of</strong> Neandertals and Cro-Magnon were clearly<br />
one or the other.<br />
• There appeared to be no evidence for the gradual evolution<br />
<strong>of</strong> culture among the Cro-Magnon. The oldest <strong>of</strong> the<br />
Cro-Magnon caves, Chauvet in France, was painted 33,000<br />
years ago and exhibited as advanced an artistic capacity as<br />
any <strong>of</strong> the later caves. There was no evidence <strong>of</strong> gradual<br />
advancement from the Mousterian stone tool industry used<br />
by the Neandertals to the more advanced stone tools made<br />
by the Cro-Magnon (see technology). Some Neandertal<br />
sites in southern France adopted a more advanced stone<br />
tool technology, called the Châtelperronian. The fact that<br />
the only Neandertals to do so were those who lived at the<br />
same time and place as the Cro-Magnon implies that they<br />
Bars represent approximate periods <strong>of</strong> time in which Cro-Magnon sites<br />
were occupied in each region. There is a general pattern <strong>of</strong> migration<br />
from Eastern Europe and northern Spain to southwest France. The<br />
Neanderthal Châtelperronian culture existed at the same time and place<br />
(southern France) as the Aurignacian Cro-Magnon culture. (Adapted from<br />
Lewis-Williams)<br />
adopted the technological advance from the Cro-Magnon,<br />
or perhaps even stole the tools from them.<br />
• It appeared that there was a general trend for the older<br />
caves to be in eastern Europe, and the newer caves in western<br />
Europe (see figure on page 104).<br />
The lack <strong>of</strong> intermediate fossils, the sudden emergence <strong>of</strong><br />
art, and the progress <strong>of</strong> culture westward across Europe, all<br />
suggested that the Cro-Magnons were descendants <strong>of</strong> immigrants<br />
rather than <strong>of</strong> Neandertals. The immigrants, presumably<br />
H. sapiens from Africa, would have encountered the<br />
Neandertals and displaced them by competition. This hypothesis<br />
is part <strong>of</strong> the Out <strong>of</strong> Africa theory that claims all modern<br />
humans, including Europeans, Orientals, Australian aborigines,<br />
and Native Americans, dispersed from Africa less than<br />
100,000 years ago. It is supported by DNA evidence from<br />
both H. sapiens and from Neandertals, which most evolutionary<br />
scientists now consider to have been a species <strong>of</strong> humans,<br />
H. neanderthalensis, that evolved separately from an African<br />
ancestor similar to Homo ergaster (see DNA [evidence<br />
for evolution]; Neandertals).<br />
The Out <strong>of</strong> Africa hypothesis would explain not only the<br />
lack <strong>of</strong> anatomical and cultural intermediates between Neandertals<br />
and Cro-Magnon but also the rapid development <strong>of</strong><br />
art and religion among the Cro-Magnon. The immigrants<br />
would have brought with them the capacity for art and religion.<br />
The immediate ancestors <strong>of</strong> the immigrants, the Homo<br />
sapiens <strong>of</strong> the Middle East and Africa, did not produce such<br />
an astounding array <strong>of</strong> artistic works. Artifacts such as the<br />
intricate ivory harpoon from Katanda in Africa, believed to<br />
be 90,000 years old, showed that H. sapiens had the capacity<br />
to produce the kind <strong>of</strong> art that the Cro-Magnon had (see<br />
Homo sapiens). The earlier H. sapiens had the capacity<br />
but had not experienced the stimulus to produce great art.<br />
The encounter with the Neandertals, who were just similar<br />
enough to them to be a threat, may have stimulated the<br />
Cro-Magnon to develop cultural complexity, which provided<br />
them with superior survival skills as well as integrating the<br />
tribes with cultural identity.<br />
The cultural explosion <strong>of</strong> the Cro-Magnon continued<br />
after the last Neandertals became extinct about 30,000 years<br />
ago. Anthropologists usually attribute this to the most recent<br />
<strong>of</strong> the ice ages which was at its climax between 30,000<br />
and 15,000 years ago. Northern Europe was covered with<br />
glaciers, and this forced some Cro-Magnon southward into<br />
regions already inhabited by other Cro-Magnon. The resulting<br />
conflict created conditions that favored the development<br />
<strong>of</strong> cultural identity and cohesion within each tribe.<br />
No one knows why the Cro-Magnon people, who<br />
became the European tribes, stopped painting caves and producing<br />
as many other cultural artifacts about 10,000 years<br />
ago. The end <strong>of</strong> the Cro-Magnon high culture coincided with<br />
the end <strong>of</strong> the ice age. After that time, migrations <strong>of</strong> tribes<br />
from the east displaced or mixed with many <strong>of</strong> the descendants<br />
<strong>of</strong> the Cro-Magnon. The new immigrants, revealed by<br />
both DNA (see markers) and language, were primarily the<br />
speakers <strong>of</strong> Indo-European languages. They may have driven<br />
some tribes into extinction, while other tribes adopted the