Gracile australopithecine - Hutchinson encyclopedia article about Gracile australopithecine Printer Friendly
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Australopithecus
(redirected from Gracile australopithecine)

    Also found in: Encyclopedia, Wikipedia 0.01 sec.

Australopithecus

The first hominid, living 3.5–4 million years ago; see human species, origins of.



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This cerebral radiator -- represented in fossils by grooves in cranial bones and openings for emissary veins -- expanded as brain size increased in gracile australopithecines and the Homo lineage, while small-brained Hadar hominids and robust australopithecines lacked the cooling network of veins.
The great brain drain: a controversial theory takes ancestral brain ... by Bower, Bruce / Science News
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