biology hwmk.. what is the diference between: aferensis/africans and habilis/herectus?

Question

for those people who like biology and know what they are doing......yes this is for my homework stop bitching about it ok......man!

yeah ineed fast help. please~

Answer 1

Afarensis is a 3.5-2.8 million year old hominin from the Kada Hadar member of the Hadar formation in the Middle Awash, Ethiopia. He is approximately 41 inches tall, weighs approximately 60 pounds and has a cranial capacity of a whopping 410 cc (approximately). Afarensis is currently considered to be transitional between apes and humans and displays some traits of both. Since he spends a lot of time on the couch watching monster movies, some observers question whether he is an obligate biped (although no one has observed him climbing a tree).

africanus was an early hominid, an australopithecine, who lived between 3.3 and 2.4 million years ago in the Pliocene. In common with the older Australopithecus afarensis, A. africanus was slenderly built, or gracile, and was thought to have been a direct ancestor of modern humans. Fossil remains indicate that A. africanus was significantly more like modern humans than A. afarensis, with a more human-like cranium permitting a larger brain and more humanoid facial features.

Habilis is a species of the genus Homo, which lived from approximately 2.5 million to 1.8 million years ago at the beginning of the Pleistocene. The definition of this species is credited to both Mary and Louis Leakey, who found fossils in Tanzania, East Africa, between 1962 and 1964. Homo habilis is arguably the first species of the Homo genus to appear. In its appearance and morphology, H. habilis was the least similar to modern humans of all species to be placed in the genus Homo (except possibly Homo rudolfensis). Homo habilis was short and had disproportionately long arms compared to modern humans; however, it had a reduction in the protrusion in the face. It is thought to have descended from a species of australopithecine hominid. Its immediate ancestor may have been the more massive and ape-like Homo rudolfensis. Homo habilis had a cranial capacity slightly less than half of the size of modern humans. Despite the ape-like morphology of the bodies, H. habilis remains are often accompanied by primitive stone tools (e.g. Olduvai Gorge, Tanzania and Lake Turkana, Kenya).
Homo habilis is thought to be the ancestor of the lankier and more sophisticated Homo ergaster, which in turn gave rise to the more human-appearing species, Homo erectus. Debates continue over whether H. habilis is a direct human ancestor, and whether all of the known fossils are properly attributed to the species.

Erectus makes approximately 1.6 million years arises a new species from homo denominated Homo. With this homo they appeared important new features as the evidence of systematic and cooperative hunting, use of the fire, evidence of sistemátiva manufacture of utensils, indication of use of rooms as encamped place of or residence.
We can say that the Homo erectus had important advances, inclusively was first homo in leaving its cradle of origin, of Africa, to colonize new spaces.

Answer 2

Here, meet our relatives:

Sahelanthropus tchadensis. 6 to 7 million years ago
Australopithecus ramidus - 5 to 4 million years ago
Australopithecus afarensis - 4 to 2.7 million years ago
Australopithecus africanus - 3.0 to 2.0 million years ago
Australopithecus robustus - 2.2 to 1.0 million years ago
Homo habilis - 2.2 to 1.6 million years ago
Homo erectus - 2 to 0.4 million years ago
Homo sapiens - 400,000 to 200,000 years ago
Homo sapiens neandertalensis - 200,000 to 30,000 years ago
Homo sapiens sapiens - 130,000 years ago to present

The further back you go, the smaller the brain cavity and the less upright they walked. Except for Neanderthals and H sapiens, who looked pretty much like us.

Answer 3

first of all, u spelt it wrongbut anyway....3 million years ago - afarensis, africanus....after homo habilis,homo erectus evolved. he/she watev. was smarter, more eficiant, and walked upright. afarensis had a brain size not much bigger than a chimpanzees.
HOOROO!

Answer 4

just thinking