Everything about Hominina totally explained
The more
anthropomorphic primates of the
Hominini tribe are placed in the
Hominina subtribe. They are characterized by the evolution of an increasingly erect
bipedal locomotion. The only extant species is
Homo sapiens. Fossil records indicate this subtribe branched from the common ancestor with the
chimpanzee lineage about 3 to 5 million years ago.
Taxonomy
Current evidence suggests that, about 2.6 million years ago,
Australopithecus began to diverge into two paths, on the one hand to
Paranthropus, more robust, specialized in an
herbivorous diet that required a stronger jaw and molars and powerful facial muscles that required a cranial crest, much like a modern
gorilla has, to unite them. The other track led to
Homo with a relatively larger brain, more delicate teeth and jaw. Both genera existed at the same time for about a million and a half years.
This subtribe is usually considered to include
Australopithecus,
Paranthropus,
Sahelanthropus,
Orrorin,
Ardipithecus,
Kenyanthropus, and
Homo. However, the exact makeup is still under debate, as some scientists struggle to determine the order of descent in
human evolution.
Description
Key features of this group involve various adaptations for living
terrestrially instead of
arboreally. One feature is an erect bipedal stance and the skull placed on top of the vertebral column. The feet are not
prehensile unlike the rest of primates, because the first toe is but robust and aligned with the other four. The hands have a developed opposable thumb and are quite adept at manipulating objects.
Further Information
Get more info on 'Hominina'.
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