Its stratigraphic position is noted as “Ileret member, c. While 15 additional hominin specimens were found during the same research expedition in 1970, no additional information is available regarding the discovery of this fossil and the information about it in the Koobi Fora monograph does not specify whether other hominin fossils were found nearby. A surface discovery, Leakey retrieved the fossil from exposures of the Okote Member, Koobi Fora Formation in Area 1 of the Ileret region. In 1970, Mary Leakey found the proximal half of a left tibia, KNM-ER 741 16, 17.
This observation was unexpected because while butchery marks left by hominins on animal fossils beginning by at least the early Pleistocene point to increased meat and marrow acquisition during the evolution of the genus Homo 9, 10, 11, 12 and hundreds of cut marked fossils of other animals have been identified from the Okote Member of the Koobi Fora Formation 13, 14, 15, no cut marks on hominin fossils from this temporal and geographic area have been reported. However, she unexpectedly observed potential butchery marks on a single fossil: KNM-ER 741 (Fig.
In July 2017, one of us (Pobiner) undertook a pilot study of the taphonomy of published hominin postcranial fossils from the Turkana region of Kenya dated to ~ 1.8 to 1.5 Ma, with an expectation of potentially finding some carnivore damage on these fossils. In 2011, Hart and Sussman 1 listed 10 hominins dated to between 6 million years ago and 50,000 years ago with evidence of terrestrial carnivore or raptor predation this list does not include carnivore damage on Australopithecus anamensis fossils from Kanapoi and Allia Bay, Kenya 2, 3 and Australopithecus africanus fossils from Member 4 of Sterktfontein, South Africa 4 a tooth mark on the pelvis of the AL 288–1 (“Lucy”) Australopithecus afarensis partial skeleton from Hadar, Ethiopia ( 5, though see 6 for an alternate interpretation of this mark) tooth marks on the Paranthropus robustus SK 54 cranium from Swartkrans, South Africa 7 and at least two Homo habilis specimens from Olduvai Gorge, Tanzania with evidence of crocodile predation 8. While it is assumed that Pliocene and early Pleistocene hominins were sometimes the victims of predation by the many taxa of larger carnivores with which they coexisted, taphonomic evidence for such interactions in the form of carnivore chewing damage or tooth marks on hominin fossils is relatively uncommon.
0 kommentar(er)
