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This article was most recently revised and updated by, https://www.britannica.com/topic/Lucy-fossil. garhi. The scapular spine (reflecting the strength of the back muscles) is closer to the range of gorillas. You can also choose to be emailed when someone replies to your comment. [69], Extinct hominid from the Pliocene of East Africa, Overview of the S1 trackway (above) and image of the L8 test-pit (below), "Hominin Taxonomy and Phylogeny: What's In A Name? [15]:143–153 Originally, the vertebral centra preserved in Lucy were interpreted as being the T6, T8, T10, T11, and L3, but a 2015 study instead interpreted them as being T6, T7, T9, T10, and L3. This yielded 151 cm (4 ft 11 in) for a presumed male (AL 333-3), whereas Lucy was 105 cm (3 ft 5 in). [5], In 1978, Johanson, Tim D. White, and Coppens classified the hundreds of specimens collected thus far from both Hadar and Laetoli into a single new species, A. afarensis, and considered the apparently wide range of variation a result of sexual dimorphism. In contrast, the earlier A. anamensis and Ar. Likewise, later Homo could reduce relative pelvic inlet size probably due to the elongation of the legs. Early hominins may have fallen prey to the large carnivores of the time, such as big cats and hyenas. 'Lucy' is a collection of fossilised bones that once made up the skeleton of a hominid from the Australopithecus afarensis species. [29] The first relatively complete jawbone was discovered in 2002, AL 822–1. G1 is a trail consisting of 4 cycles likely made by a child. In 1948, German palaeontologist Edwin Hennig proposed classifying these remains into a new genus, "Praeanthropus", but he failed to give a species name. [6] Considerable debate of the validity of this species followed, with proposals for synonymising them with A. africanus or recognising multiple species from the Laetoli and Hadar remains. The existing Open Comments threads will continue to exist for those who do not subscribe to Independent Premium. [49] However, the foot of the infantile specimen DIK-1-1 indicates some mobility of the big toe, though not to the degree in non-human primates. [11] Likewise, the animal assemblage varied widely from site to site. [45] However, it is unclear if the hand was capable of producing stone tools. Start your Independent Premium subscription today. However, this is much debated, as tree-climbing adaptations could simply be basal traits inherited from the great ape last common ancestor in the absence of major selective pressures at this stage to adopt a more humanlike arm anatomy. A.L. Beyond Laetoli and the Afar Region, the species has been recorded in Kenya at Koobi Fora and possibly Lothagam; and elsewhere in Ethiopia at Woranso-Mille, Maka, Belohdelie, Ledi-Geraru, and Fejej. This specimen strongly resembles the deep and robust gorilla jawbone. 333-101 and A.L. Let us know if you have suggestions to improve this article (requires login). The 41st anniversary of the discovery of 'Lucy' has been celebrated with a Google Doodle.

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