This webite focuses on Human Evolution, or the Evolution of man. It looks
at our past and our history from an Anthropological (anthropology) point of
view. We evolved from apes through many different stages including the hominid
Species "Hominid" refers to members of the human family, Hominidae,
which consist of all species from the point where the human line splits from
apes towards present day humans. Habitual bipedal locomotion (movement on
two legs), an upright position, and a large brain that has lead to: tool use,
language, and culture characterize hominids. The hominid evolutionary line
begins with: Ardipithecus ramidus This species is the oldest known hominid.
A few fragmentary skull remains were found in Ethiopia, Africa. Due to the
lack of fossil material found, scientists do not know much about this species.
The importance of this hominid is that scientists believe it to be forest
dwelling, which counter-argues the theory that hominids became bipedal because
they moved to a savanna environment. Australopithecus This genus of hominid,
scientists believe, is the link between Ardipithecus ramidus and the Homo
genus. Their gracile skulls and the transformation from ape-like features
to modern human features characterize this particular group. Australopithecus
anamensis. It was found by Meave Leakey in East Africa. Australopithecus afarensis.
It was found in Ethiopia, Tanzania, and Kenya. The most famous fossil evidence
is The Laeotoli Footprints found by Mary Leakey. These footprints were evidence
of bipedalism. They had defining characteristics such as a strong heel strike,
splayed toes, and a slight arch."Lucy" is the most well known fossil
in the world today. Donald Johanson found her in Afar, Ethiopia in 1978. Lucy
is the center of many debates. When this fossil was found, it was amongst
a group of other A. afarensis. After studying all of the individuals, Johanson
believes that this species is sexually dimorphic. Sexual dimorphism is the
difference in size between males and females. In this case, the males seem
to be more robust, are prognathic, and have bigger canines.Australopithecus
bahrelghazali Not much is known about A. bahrelghazali. Its jaw and teeth
were similar to A. afarensis but it had a "modern" chin. The important
feature of this species is that it was found in Chad, Africa, an area where
virtually no hominid fossils have been found. Australopithecus africanus.
It was found in South Africa. There are three famous fossils: "Taung
Baby" was found by Raymond Dart in 1924. It was the first hominid found.
This was a significant find because it was the first evidence that our origins
began in Africa. "Little Foot" was found in Sterkfontein, South
Africa by Ron Clark. Clark found this fossil stashed in a box and reassembled
it. "Mrs. Ples" was found by Robert Broom. She was conclusive
evidence that our origins did indeed begin in Africa. It should also be noted
that Mrs. Ples is really Mr. Ples. Australopithecus garhi existed 2.5 million
years ago. Tim White and Berhame Asfaw found it in Bouri, East Ethiopia. Characteristics:
cranial capacity of 450ml.canines and premolars like Homo genus huge molars
no diastema prognathic ape-like arms and legs. The importance of this hominid
is that it was found with many tools and an array of slaughtered animals.
Tool use has been the defining criteria that separated the Homo genus from
the Australopithecines. Australopithecus This genus of hominid, scientists
believe, is the link between Ardipithecus ramidus and the Homo genus. Their
gracile skulls and the transformation from ape-like features to modern human
features characterize this particular group. Australopithecus anamensis This
species existed from 4.2 - 3.9 million years ago. It was found by Meave Leakey
in East Africa and was named in August of 1995. Australopithecus afarensis
A. afarensis existed from 4-3 million years ago. It was found in Ethiopia,
Tanzania, and Kenya. The most famous fossil evidence is1) The Laeotoli Footprints
found by Mary Leakey. These footprints were evidence of bipedalism. They had
defining characteristics such as a strong heel strike, splayed toes, and a
slight arch."Lucy" is the most well known fossil in the world today.
Donald Johanson found her in Afar, Ethiopia in 1978. Lucy is the center of
many debates. When this fossil was found, it was amongst a group of other
A. afarensis. After studying all of the individuals, Johanson believes that
this species is sexually dimorphic. Sexual dimorphism is the difference in
size between males and females. In this case, the males seem to be more robust,
are prognathic, and have bigger canines.Australopithecus bahrelghazaliThis
hominid existed from 3.5 to 3 million years ago. Not much is known about A.
bahrelghazali. Its jaw and teeth were similar to A. afarensis but it had a
"modern" chin. The important feature of this species is that it
was found in Chad, Africa, an area where virtually no hominid fossils have
been found. Australopithecus africanus "Taung Baby" was found
by Raymond Dart in 1924. It was the first hominid found. This was a significant
find because it was the first evidence that our origins began in Africa."Little
Foot" was found in Sterkfontein, South Africa by Ron Clark. Clark found
this fossil stashed in a box and reassembled it."Mrs. Ples" was
found by Robert Broom. She was conclusive evidence that our origins did indeed
begin in Africa. It should also be noted that Mrs. Ples is really Mr. Ples.
Australopithecus garhi A. garhi existed 2.5 million years ago. Tim White
and Berhame Asfaw found it in Bouri, East Ethiopia.The importance of this
hominid is that it was found with many tools and an array of slaughtered animals.
Tool use has been the defining criteria that separated the Homo genus from
the Australopithecines. Paranthropus Paranthtropus are a group of hominids
that existed at the same time as the Australopithecines and some species of
the Homo genus. It is believed that the Paranthropus species evolved on their
own and had no part in the evolution of the Homo genus. Some Paranthropus
features are robust skulls and huge flat molars used for grinding. Paranthropus
aethiopicus (the black skull) This species existed from 2.8 - 2.2 million
years ago. It was found in Kenya, Ethiopia, and South Africa. Paranthropus
robustus This species existed from 2.2-1.5 million years ago. The first fossil
was found by a schoolboy in Kromdraai, Africa. The Homo genus is separated
from the earlier hominids because of the emergence of tool use, language,
and culture. The genus begins about 2.3 million years ago. The characteristics
of these species are bigger brain (above 1000ml), the forehead rises straight
up, the skull becomes rounder, the teeth are reduced, arms are shorter and
legs are longer, and the skeleton becomes more delicate. Homo habilis / Homo
rudolfensis These species existed 2.3-1.6 million years ago. They were found
in Tanzania, Kenya, Ethiopia, South Africa, and China. These hominids are
considered the first tool users. They used tools that were chips of rock called
Oldowan tools. Scientist have debated over whether H. habilis and H. rudolfensis
should be separated or not. H. rudolfensis was found in Koobi Fora, Kenya
and lived 1.6 million years ago. Its characteristics are a cranial capacity
of 750 ml, postorbital constriction, and no brow ridge. Although the characteristics
of H. rudolfensis differ slightly from the characteristics stated above scientist
still hesitate to separate them, because there is so much variation within
H. habilis that they do not know where to draw the line. Homo erectus / Homo
ergaster H. erectus existed 1.8-27,000 years ago and H. ergaster existed 1.8-1.5
million years ago. The separation between the two species is that H. erectus
was found in Asia and H. ergaster was found in Africa. Other than that the
two share the same characteristics. This species was found with a different
type of tool called Achuelian tools. These tools were more advanced than the
Oldowan tools. Both sides of the rock were worked on to make the tool sharp
and it gave the tool a tear drop shape. These tools were used for many tasks
such as chopping, scraping, and cutting. There is some evidence that this
species may have used fire. One of the major fossils found is a skull cap
found in Java, Indonesia. In 1891 Eugene Dubois found this fossil at a time
when people wanted to believe that our origins did not begin in Africa. Therefore
they were hoping to find that our origins started in Java. Another major fossil
found was the Turkana Boy. This fossil is one of the most complete Homo skeletons
found. The specimen was found in West Turkana Lake in Africa. Some important
features about it is that it was stronger than Anatomically Modern Homo sapiens
and that he had a narrow spinal cord, which may have inhibited speech.
Archaic Homo sapiens These species first appeared around 800,000 years ago.
"Archaic" describes a diverse group of hominids between H. erectus
and "modern " humans. The brain size is larger than H. erectus,
but smaller than most "modern" humans. The skull is also more round
than H. erectus. The skeleton and teeth are less robust than H. erectus, but
more so than "modern " humans. These species still have large brow
ridges and receding foreheads and chins. There is no clear dividing line between
these species. Homo antecessor This species existed 800,000 years ago and
was found in Spain. Homo heidelbergensi This hominid existed 500,000-100,000
years ago. It has been found in Europe, Africa, India, and China. This species
was found in association with a new type of Achuelian tool. The tools were
made with what is called the Levallois technique. The hominid worked on the
rock from the middle out on both sides. Homo neanderthalensis This species
existed 130,000 to 25,000 years ago. Some scientists propose to push back
the date to as far as 225,000 years ago. This species has been found in Europe,
East Asia, and the Middle East. H. neanderthalensis was found with a more
advanced set of Achuelian tools called Mousterian tools. These tools are considered
more advanced because more work was put into detailing them with animal bones
and horns. Mousterian tools were the first tools to be hafted, that is to
have handles. There were 63 different types of these tools.Currently, anthropologists
are debating over whether H. neanderthalensis is an animal or a sophisticate.
Some anthropologists believe that H. neanderthalensis are sophisticates because
of the following characteristics: Those anthropologists that claim that H.
neanderthalensis are animals do so for the following reasons: They do not
recognize the evidence for art, music, shelters, clothing, or caring for the
dead They believe that the objects found in the burial sites were there by
chance The anthropologists agree that the species had more advanced tools,
but they did not know how to use them, resulting in many injuries. Both groups
of anthropologists have valid arguments, readers will have to draw their own
conclusions. Anatomically Modern Homo sapiens (AMHS) This species existed
200,000 years ago- present. They were/are found in Africa, Asia, Europe, Australia,
North America, and South America.