The ecology of Australopithecus anamensis in the early Pliocene of Kanapoi, Kenya.
作者： René Bobe , Fredrick Kyalo Manthi , Carol V. Ward , J. Michael Plavcan , Susana Carvalho
DOI: 10.1016/J.JHEVOL.2019.102717
关键词:
摘要: Abstract Australopithecus anamensis is a pivotal species in human evolution. It likely to be the direct ancestor of afarensis and that may have given rise Homo Paranthropus lineages. had suite adaptations for habitual bipedalism diet differed from earlier hominin species. Under what environmental ecological conditions did this arise? The early Pliocene site Kanapoi Lake Turkana Basin Kenya has largest sample A. anamensis eastern Africa rich record fossil vertebrates. Most fossils are chronologically well constrained by radiometrically dated tephras between ages 4.2 4.1 million years ago. Sedimentological, isotopic, faunal data indicate environments during complex range vegetation types included closed woodlands, shrubs, grasslands near river (for most sequence) or lake. These were dynamic landscapes could shift rapidly fluvial lacustrine conditions, then back. Australopithecus anamensis shared its with at least 10 very large herbivores, which undoubtedly played major role modifying landscape opening wooded areas providing pathways bipedal hominins. Hominins competed terrestrial resources abundant suids (Nyanzachoerus Notochoerus) arboreal monkeys (Parapapio being common cercopithecid). formidable group predators hyena (Parahyaena howelli), two sabre-tooth felids (Dinofelis Homotherium), giant otter (Enhydriodon cf. dikikae), three crocodiles. Various measures abundance was an important component ecosystems, key allowed thrive landscapes.
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