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Encyclopedia of Evolution.pdf - Online Reading Center

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mitochondrial DNA<br />

Hominin skulls have been found that display the entire range <strong>of</strong> both length and breadth <strong>of</strong> crania. These skulls do not represent a single lineage <strong>of</strong><br />

hominins; the Homo erectus skulls ( , , , , ) are a separate lineage from the H. heidelbergensis leading to Neandertals ( , , , , ) and from the H.<br />

heidelbergensis leading to modern humans ( 0).<br />

the immediate ancestors <strong>of</strong> modern humans (9,10). This figure<br />

also illustrates what appears to be an example <strong>of</strong> convergent<br />

evolution with independent increases in brain size in Africa,<br />

Europe, and Asia. There is an approximate time order also,<br />

with the smaller skulls usually being older. These crania represent<br />

intermediate states but do not represent a single evolutionary<br />

lineage.<br />

In conclusion, it is evident that the links between modern<br />

humans and the common ancestor <strong>of</strong> humans and chimpanzees<br />

are no longer missing (australopithecines; H. habilis;<br />

H. ergaster; H. heidelbergensis), and that the links between<br />

the major hominin species are no longer missing (between H.<br />

ergaster and H. heidelbergensis; between H. heidelbergensis<br />

and Neandertals; between H. heidelbergensis and modern<br />

humans). The “missing links” have been found<br />

Further <strong>Reading</strong><br />

Brass, M. “The antiquity <strong>of</strong> man: Exploring human evolution and the<br />

dawn <strong>of</strong> civilisation.” Available online. URL: http://www.antiquity<strong>of</strong>man.com/archaeology_links_homininarticles.html.<br />

Accessed<br />

April 29, 2005.<br />

Edwards, Erika J., Reto Nyffeler, and Michael J. Donoghue. “Basal<br />

cactus phylogeny: Implications <strong>of</strong> Pereskia (Cactaceae) paraphyly<br />

for the transition to the cactus life form.” American Journal <strong>of</strong><br />

Botany 92 (2005): 1,177–1,188.<br />

Foley, Jim. “Fossil hominids: The evidence for human evolution.”<br />

Available online. URL: http://www.talkorigins.org/faqs/homs/.<br />

Accessed April 29, 2005.<br />

Kreger, C. David. “A look at modern human origins.” Available<br />

online. URL: http://www.modernhumanorigins.com/. Accessed<br />

April 29, 2005.<br />

Manzi, G., F. Mallegni, and A. Ascenzi. “A cranium for the earliest<br />

Europeans: Phylogenetic position <strong>of</strong> the hominid from Ceprano,<br />

Italy.” Proceedings <strong>of</strong> the National Academy <strong>of</strong> Sciences USA 98<br />

(2001): 10,011–10,016.<br />

Museum <strong>of</strong> Natural History, Smithsonian Institution, Washington,<br />

D.C. “Human origins program site map/contents page.” Available<br />

online. URL: http://www.mnh.si.edu/anthro/humanorigins/<br />

sitemap.htm. Accessed April 29, 2005.<br />

Tattersall, Ian, and Jeffrey Schwartz. Extinct Humans. New York:<br />

Westview Press, 2001.<br />

mitochondrial DNA See symbiogenesis.<br />

modern synthesis The modern synthesis is the reconciliation<br />

<strong>of</strong> Darwinian natural selection with Mendelian

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