Institute for Human Evolution, University of the Witwatersrand, Johannesburg, South Africa.
PLoS One. 2011;6(11):e26940. doi: 10.1371/journal.pone.0026940. Epub 2011 Nov 3.
Recent discoveries at the new hominin-bearing deposits of Malapa, South Africa, have yielded a rich faunal assemblage associated with the newly described hominin taxon Australopithecus sediba. Dating of this deposit using U-Pb and palaeomagnetic methods has provided an age of 1.977 Ma, being one of the most accurately dated, time constrained deposits in the Plio-Pleistocene of southern Africa. To date, 81 carnivoran specimens have been identified at this site including members of the families Canidae, Viverridae, Herpestidae, Hyaenidae and Felidae. Of note is the presence of the extinct taxon Dinofelis cf. D. barlowi that may represent the last appearance date for this species. Extant large carnivores are represented by specimens of leopard (Panthera pardus) and brown hyaena (Parahyaena brunnea). Smaller carnivores are also represented, and include the genera Atilax and Genetta, as well as Vulpes cf. V. chama. Malapa may also represent the first appearance date for Felis nigripes (Black-footed cat). The geochronological age of Malapa and the associated hominin taxa and carnivoran remains provide a window of research into mammalian evolution during a relatively unknown period in South Africa and elsewhere. In particular, the fauna represented at Malapa has the potential to elucidate aspects of the evolution of Dinofelis and may help resolve competing hypotheses about faunal exchange between East and Southern Africa during the late Pliocene or early Pleistocene.
最近在南非马拉帕新发现的人类化石遗址中,出土了大量与新描述的人类分类Australopithecus sediba 相关的动物群。利用铀铅测年法和古地磁测年法对该遗址进行的年代测定提供了 197.7 万年前的年龄,这是南非更新世时期年代测定最准确、时间约束最严格的遗址之一。迄今为止,在该遗址共鉴定出 81 种食肉动物标本,包括犬科、灵猫科、獴科、鬣狗科和猫科的成员。值得注意的是,灭绝的 Dinofelis cf. D. barlowi 可能代表了该物种的最后出现日期。现存的大型食肉动物有豹(Panthera pardus)和棕鬣狗(Parahyaena brunnea)。较小的食肉动物也有代表,包括 Atilax 和 Genetta 属,以及 Vulpes cf. V. chama。马拉帕可能也是黑足猫(Felis nigripes)的首次出现地点。马拉帕的地质年代和相关的人类分类和食肉动物遗骸为研究哺乳动物在南非和其他地区相对未知时期的进化提供了一个窗口。特别是,马拉帕的动物群有可能阐明 Dinofelis 的进化方面,并有助于解决关于晚更新世或早更新世期间东非和南非之间动物群交流的竞争假说。