A one-million-year-old hominid distal ulna from Olduvai Gorge, Tanzania.

Bibliographic Collection: 
Publication Type: Journal Article
Authors: Hlusko, Leslea J; Reiner, Whitney B; Njau, Jackson K
Year of Publication: 2015
Journal: Am J Phys Anthropol
Volume: 158
Issue: 1
Pagination: 36-42
Date Published: 2015 Sep
Publication Language: eng
ISSN: 1096-8644
Keywords: Animals, Biological Evolution, Female, Fossils, Geologic Sediments, Hominidae, Male, Paleontology, Tanzania, Ulna

OBJECTIVE: Our aim was to recover new evidence of the evolution of the hominid lineage.METHODS: We undertook paleontological fieldwork at Olduvai Gorge, Tanzania, in one of the richest paleoanthropological sites in the world, documenting the evolution of our lineage and its environmental contexts over the last 2 million years.RESULTS: During field work in 2012, the Olduvai Vertebrate Paleontology Project discovered the distal end of a hominid ulna (OH 82) on the north side of Olduvai Gorge a few meters west of the Third Fault, eroding from Bed III sediments that are ∼1 million years in age.DISCUSSION: The size and morphology of this distal ulna falls within the normal range of variation seen in humans, although at the larger end of the distribution.

DOI: 10.1002/ajpa.22765
Alternate Journal: Am. J. Phys. Anthropol.