This chart of the Hominid family will categorize the known
hominids by genus and species, and if applicable, the subspecies or
other categorization. Beginning with the oldest known species and
moving forward chronologically, it will give their age by oldest and
youngest confirmed or conjectured date (as noted),the creatures known
locations and environments, its distinguishing physical characteristics,
any technology it may or is known to have posessed, and any social
behaviours that are known or can be ascribed. Conjecture about the
species and their relationships to others will be included. Finally
some notable archeological sites or finds will be given.
Each paragraph of facts will be provided with source citations.
Due to size limitations, this survey is presented in two parts.
Hominoid Superfamily
This group contains species that would later develop into the hominid
line and the great apes. (1)
Aegyptopithecus
Found in the later Oligocene, 28-29 mya, in Egypt, and having a somewhat
developed forehead, small incisors, lower premolars and large molars.
(1)
Proconsul
Three species; major, africanus and nyanzae, all showing hominid
characteristics. (1)
Kenyapithecus wickeri
A possible forerunner of the Pongid and Hominid lines. (1)
Ardipithecus ramidus
4.4 mya (4)
Hominoid/hominid teeth. A piece of the forenum magnum indicated upright
posture. (4) Leg and pelvis indicate a semi-bipedal
mode of locomotion, warranting a separate genus. (5)
In Ethiopia, the remains of 17 individuals have been found, mostly
teeth, but a partial juvenile jaw, partial cranum case and arm bone
fragments from two individuals are included. The envorinment at the
time was temperate or tropical forest. Discovered by Tim White in 1994.
(4, 6)
Australopithecines
General:
The Lake Baringo jawbone could make this genus 5 million years old. (3)
Human-like jaws and teeth, ape-like (small) skull. (3)
Gracile. Bi-pedal, but still tree climbers. Pronounced cheekbones,
projecting jaws, large teeth, heavily enameled molars that indicate a
primarily vegetarian diet. A high degree of sexual di-morphism. (9)
Their remains have been found only on the African continent (3) .
A. anamensis
4.2 to 3.5mya (10)
A thick tibia with a concave knob on top indicates bi-pedalism.
Paralell rows of back teeth are similar to apes, likewise its small
earholes. (5)
Found only in East Africa so far, possibly forest dwelling. (5)
A lower left humerous (4 mya), lower jaw with all teeth (4.15 mya), and
the upper and lower segments of a tibia (4 mya) were discovered by Meave
Leaky in 1995 around Lake Turkanna, Nairobi, Kenya. (10, 1)
A. afarensis
5 mya to 3 mya. (3)
400cc braincase. (9) Arms longer than humans but
shorter than modern apes. About four feet tall. (3)
Veinous brain cooling mechanism, modified from non-erect hominoids. (7)
Could have lived in African forests or savannah, or both, with tree
climbing abilities. (12, 7)
Some found in groups. (6)
A knee joint (3.4 mya), the Lucy skeleton, and the First Family of
thirteen individuals (3.2 mya) were discovered in the Afar valley,
Ethiopia by Donald Johansen in 1973, 74 and 75, respectively.
Footprints (3.7 mya) preserved in volcanic ash at Laetoli, Kenya and
discovered by Mary Leaky in 1976 may belong to this species. In 1991, a
70% complete skeleton was discovered by Bill Kimbel and Yoel Rak, and
confirmed the skeletons and skull’s belonged to the same species and
confirmed the dimorphism of the species. (6)
Associated with an ape-like, grasping big toe found on two fully
articulated feet and ankle fossils, dated 3.5mya. The pieces were
discovered by Ronald Clarke in a university museum drawer in
Johannesburg, having been dug up from a mine shaft in the 70’s and
mislabled as chimpanzee’s. (12)
A. africanus
http://anthro7.anthro.uiuc.edu/~anth102/sts_5.html
3 mya (3) to 1 mya (?)
Gracile variety. (3) Modified veinous brain cooling.
(7) 440 to 485cc braincase capacity. (6)
“Taung Child”, identified by Ramond Dart in 1925 and rejected by other
anthropologists as a human predecessor, is about 1 to 2 mya (most
scientists expected a large-brained ancestor with an ape like jaw, and
seemed to want to reject in any event an African genesis of human
evolution). The foramen magnum at the base of the skull indicated
bipedalism.
At Mankapan, South Africa, Dart discovered the most complete
Australopithecus to that date, 1958. He named it “Plesianthropus”. It
was an africanus specimen, and dated 2.3 mya. (8, 6)
Paranthropus
General:
Formerly classified as a robust form of Australopithecus. (3) Masive teeth and jaw muscles indicate vegetarian
diet of coarse plant material. (2) Recent
examinations of its hand bones reveal that it could have manipulated
stone tools quite well. (31)
African continent, tropical forest dwelling. (2, 7)
Stone tools have turned up in Ethiopia that have been dated to 2.5 to
2.6 mya, the oldest ones discovered so far. This makes the arrival and
departure of the Oldowan tool industry coincident with the tenure of the
Paranthropus species, and from this some now suggest that it was
Paranthropus, and not early Homo, that were the first tool makers. (31)
Enlarged sinus brain cooling mechanism, derivative from Autralopithecines. (7)
P. aethiopicus
3.3 to 2.6 mya (33)
Suspected progenitor of the paranthropus genus. (31)
The Black Skull of Tanzania was discovered by Alan Walker in 1985, and
is now considered by some a member of this species. (33)
P. boisei
2,6mya (3) to 1.2 mya (2) .
Largest variety. Sometimes with bony crests atop their skulls
supporting massive jaw muscles. Smallest hominid braincase recorded
(410cc). More prominent ridges, more jutting face. (3)
A complete intact cranium missing only teeth, with a braincase of about
510cc and dated 1.7 mya, discovered by Richard Leaky in 1969, near Lake
Turkana. A smaller version without the bony crest, dated to 1.7 mya and
with a 500cc braincase was discovered by the same Leaky in the same area
in 1970. (6)
P. robustus
2.6 mya to 1.8 mya (3, 31)
“Zinjanthropus” or “Nutcracker Man”, an almost complete cranium with a
530cc capacity, was discovered by Mary Leaky in 1959 at Oldavai Gorge in
Tanzania, dated to 1.8 mya. (8, 6)
Once classified as A. boisei. (3)