This article is dedicated to the memory of two close friends and colleagues, Charlie Lockwood (1970-2008) and Elizabeth Harmon (1965-2009), who contributed indelibly to the recent history of field and analytical research on Australopithecus afarensis reviewed here.
“Lucy” redux: A review of research on Australopithecus afarensis†
Article first published online: 3 NOV 2009
Copyright © 2009 Wiley-Liss, Inc.
American Journal of Physical Anthropology
Supplement: Yearbook of Physical Anthropology
Volume 140, Issue Supplement 49, pages 2–48, 2009
How to Cite
Kimbel, W. H. and Delezene, L. K. (2009), “Lucy” redux: A review of research on Australopithecus afarensis. Am. J. Phys. Anthropol., 140: 2–48. doi: 10.1002/ajpa.21183
- Issue published online: 3 NOV 2009
- Article first published online: 3 NOV 2009
- The National Science Foundation
- National Geographic Society
- Institute of Human Origins at Arizona State University (Hadar project)
- Australopithecus afarensis;
- Pliocene hominin evolution
In the 1970s, mid-Pliocene hominin fossils were found at the sites of Hadar in Ethiopia and Laetoli in Tanzania. These samples constituted the first substantial evidence for hominins older than 3.0 Ma and were notable for some remarkable discoveries, such as the “Lucy” partial skeleton and the abundant remains from the A.L. 333 locality at Hadar and the hominin footprint trail at Laetoli. The Hadar and Laetoli fossils were ultimately assigned to the novel hominin species Australopithecus afarensis, which at the time was the most plesiomorphic and geologically ancient hominin taxon. The discovery and naming of A. afarensis coincided with important developments in theory and methodology in paleoanthropology; in addition, important fossil and genetic discoveries were changing expectations about hominin divergence dates from extant African apes. This coincidence of events ensured that A. afarensis figured prominently in the last 30 years of paleoanthropological research. Here, the 30+ year history of discovery, analysis, and interpretation of A. afarensis and its contexts are summarized and synthesized. Research on A. afarensis continues and subject areas in which further investigation is needed to resolve ongoing debates regarding the paleobiology of this species are highlighted. Yrbk Phys Anthropol 52:2–48, 2009. © 2009 Wiley-Liss, Inc.