What is Australopithecus anamensis known for?
known for its fossils of Australopithecus anamensis, an early hominin (member of the human lineage) dating to between 3.9 and 4.2 million years ago. Among these fossils is a relatively complete shinbone with features indicating that A. anamensis walked on two legs.
Is Australopithecus anamensis bipedal?
Australopithecus anamensis has a combination of traits found in both apes and humans. The upper end of the tibia (shin bone) shows an expanded area of bone and a human-like orientation of the ankle joint, indicative of regular bipedal walking (support of body weight on one leg at the time).
Who discovered A. anamensis?
Australopithecus anamensis (or Praeanthropus anamensis) is a stem-human species that lived approximately four million years ago. Fossils have been excavated in Kenya and Ethiopia. The first specimen was discovered in 1965 near Lake Turkana, followed by excavations in 1987 by Allan Morton.
What makes Australopithecus afarensis a hominin?
afarensis belongs to the genus Australopithecus, a group of small-bodied and small-brained early hominin species (human relatives) that were capable of upright walking but not well adapted for travelling long distances on the ground.
Where did Anamensis come from?
anamensis are known from Kenya and Ethiopia, representing over twenty individuals. The first fossils of A. anamensis discovered, are dated to around 3.8 and 4.2 million years ago and were found in Kanapoi and Allia Bay in Northern Kenya.
Where was Lucy found?
Lucy, a 3.2 million-year old fossil skeleton of a human ancestor, was discovered in 1974 in Hadar, Ethiopia. The fossil locality at Hadar where the pieces of Lucy’s skeleton were discovered is known to scientists as Afar Locality 288 (A.L. 288).
What is the name of the most famous hominid?
Named Lucy after the Beatles’ “Lucy in the Sky with Diamonds,” the skeleton is officially known as AL 288-1 and is arguably the most famous hominid fossil ever found.
Is Turkana boy older than Lucy?
The public press on Turkana Boy has been minuscule compared to that of Lucy, likely because this find was claimed to be 1.4 million years old by some experts and as old as 1.9 million Darwin years by others.
How old was the Australopithecus anamensis when it lived?
Australopithecus anamensis is a hominin species that lived approximately between 4.2 and 3.8 million years ago. Nearly one hundred fossil specimens are known from Kenya and Ethiopia, representing over 20 individuals.
Is the Australopithecus the first species to walk upright?
The Australopithecus anamensis tibia indicates bipedalism. It is the first species to walk upright! The cranial capacity of the Australopithecus anamensis is unknown. Male height is around 5 feet, while the females are around 4’3”.
What kind of teeth did au.anamensis have?
Unlike the parabolic tooth arrangement in the jaws of later hominins, Au. anamensis had an apelike, U-shaped dental arcade wherein the cheek teeth are nearly parallel (see Figure 10.3). Their jaws were also prognathic and their canines were larger than descendent species.
How are Australopithecus anamensis similar to Ardipithecus ramidus?
Tooth size variability in A. anamensis suggests that there was significant body size variation. In relation to their diet, A. anamensis has similarities with their predecessor Ardipithecus ramidus. A. anamensis sometimes had much larger canines than later Australopithecus species.