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Ardipithecus ramidus

Ar. ramidus was first identified in 1994 from Aramis, Ethiopia. The known fossil material is between 4.5 and 4.2 million years old. The most informative specimen is the partial skeleton ARA-VP-6/500, known as "Ardi".

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Guide to Sahelanthropus, Orrorin and Ardipithecus

These fossil species between 8 million and 4.4 million years old include some of the earliest members of the hominin lineage.

Ardipithecus hand skeleton next to a human hand X-ray image
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Have Sahelanthropus and Orrorin been written out of existence?

A big argument about the so-called savanna theory comes with a surprising claim about the earliest possible hominin fossils.

Artistic image of a skull of Sahelanthropus enshrouded by fog and clouds
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An in-depth look at the pelvic reconstruction of Ardipithecus

The pelvic anatomy of Ardipithecus ramidus may give clues about the posture and locomotion of this ancient species.

Skeleton of Ardipithecus ramidus in a display case
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Data access to fossil hominins, reflecting on the NSF policy

In a post from 2005, I reflect on why access to data from fossil hominins is of central value to progress in paleoanthropology.

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Ardipithecus ramidus remains from a second field region, As Duma

New research from Sileshi Semaw and coworkers describes new fossils between 4.5 and 4.3 million years old.

A fossil mandible of Ardipithecus ramidus held by a researcher, with two phalanges on a table.