Late Pliocene fossiliferous sedimentary record and the environmental context of early Homo from Afar, Ethiopia

  title={Late Pliocene fossiliferous sedimentary record and the environmental context of early Homo from Afar, Ethiopia},
  author={E. Dimaggio and Christopher J. Campisano and John Rowan and G. Dupont‐Nivet and A. Deino and F. Bibi and M. Lewis and Antoine Souron and D. Garello and L. Werdelin and K. Reed and J. Arrowsmith},
  pages={1355 - 1359}
Finding Homo nearly 3 million years ago The fossil record of humans is notoriously patchy and incomplete. Even so, skeletal remains and artifacts unearthed in Africa in recent decades have done much to illuminate human evolution. But what is the origin of the genus Homo? Villmoare et al. found a fossil mandible and teeth from the Afar region in Ethiopia. The find extends the record of recognizable Homo by at least half a million years, to almost 2.8 million years ago. The morphological traits… Expand
African Land Mammal Ages
ABSTRACT We define 17 African land mammal ages, or AFLMAs, covering the Cenozoic record of the Afro-arabian continent, the planet's second largest land mass. While fossiliferous deposits are absentExpand
Fossils from Mille-Logya, Afar, Ethiopia, elucidate the link between Pliocene environmental changes and Homo origins
A new fossil site from this period is reported, Mille-Logya, Ethiopia, and the geology, basin evolution and fauna, including specimens of Homo are characterized, suggesting that Homo either emerged from Australopithecus during this interval or dispersed into the region as part of a fauna adapted to more open habitats. Expand
Late Pliocene environmental change during the transition from Australopithecus to Homo
New stable carbon isotope data from the late Pliocene mammalian fauna from Ledi-Geraru, in the lower Awash Valley, Ethiopia, and mammalian community analyses from the LAV and Turkana Basin indicate that the two regions were largely similar through the Plio−Pleistocene, but that important environmental differences existed during the emergence of Homo around 2.8 million years ago. Expand
Age and context of mid-Pliocene hominin cranium from Woranso-Mille, Ethiopia
Analysis of chemically correlated volcanic layers and the palaeomagnetic stratigraphy, combined with Bayesian modelling of dated tuffs, yield an age range of 3.804 ± 0.013 to 3.014 million years old for the deltaic strata and the fossils that they contain. Expand
Temporal evidence shows Australopithecus sediba is unlikely to be the ancestor of Homo
It is highly unlikely that A. sediba is ancestral to Homo, and the most viable candidate ancestral species remains Australopithecus afarensis, although it postdates earliest Homo by 800,000 years. Expand
Kantis: A new Australopithecus site on the shoulders of the Rift Valley near Nairobi, Kenya.
A new Pliocene site, Kantis, is reported on the shoulder of the Gregory Rift Valley, which extends the geographical range of Australopithecus afarensis to the highlands of Kenya, and its fauna is generally similar to that reported from other contemporaneous A. afarensis sites on the Rift Valley floor. Expand
Paleoenvironments of the Shungura Formation (Plio-Pleistocene: Ethiopia) based on ecomorphology of the bovid astragalus.
  • W. Barr
  • Biology, Medicine
  • Journal of human evolution
  • 2015
This study reconstructs habitat preferences of the Shungura Formation bovids from ca. Expand
Hominin diversity and high environmental variability in the Okote Member, Koobi Fora Formation, Kenya.
It is suggested that in the early Pleistocene a wide range of depositional environments and vegetation types, along with a high frequency of volcanism, likely maintained high levels of environmental variability both in time and space across the Omo-Turkana region, and provided ecological opportunities for the coexistence of at least three hominin species alongside a diverse mammalian fauna. Expand
Plio-Pleistocene decline of African megaherbivores: No evidence for ancient hominin impacts
Analysis of eastern African herbivore communities spanning the past 7 million years is analyzed to test the hypothesis that top-down impacts of tool-bearing, meat-eating hominins contributed to the demise of megaherbivores prior to the emergence of Homo sapiens. Expand
Late Pliocene Bovidae from Ledi-Geraru (Lower Awash Valley, Ethiopia) and their Implications for Afar Paleoecology
ABSTRACT Fossil bovids are described from the late Pliocene site of Ledi-Geraru, mainly from the Gurumaha and Lee Adoyta sedimentary packages (2.8–2.6 Ma). Finds include taxa already known from theExpand


"Lucy" redux: a review of research on Australopithecus afarensis.
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. Expand
Ecological change in the lower Omo Valley around 2.8 Ma
The results provide new evidence supporting ecological change in the eastern African record around 2.8 Ma, but raise questions about the resolution at which different ecological proxies may be comparable, the correlation of vegetation and faunal change, and the interpretation of low δ13C values in the African Pliocene. Expand
Paleoecological patterns at the Hadar hominin site, Afar Regional State, Ethiopia.
  • K. Reed
  • Geology, Medicine
  • Journal of human evolution
  • 2008
Habitat reconstructions of 12 submembers of the Hadar and Busidima formations are presented here along with faunal differences in these submembers through time, showing Australopithecus afarensis from Laetoli through Hadar times appears to have been a eurytopic species. Expand
Paleosol carbonates from the omo group: Isotopic records of local and regional environmental change in east africa
Abstract Pliocene and Pleistocene sedimentary rocks from the Omo–Turkana Basin in East Africa are well known for fossil and archeological evidence of human evolution and provide a unique opportunityExpand
Fossil elephantoids, Awash paleolake basins, and the Afar triple junction, Ethiopia
Abstract The most diverse collection of fossil elephantoids from a single area, are contained in the 1-km-thick hominid-bearing Awash Group. These deposits range from late Miocene to Holocene in ageExpand
The expansion of grassland ecosystems in Africa in relation to mammalian evolution and the origin of the genus Homo
The savanna hypothesis may not explain the divergence of hominins from other apes, but it could be correct in stressing the importance of grasslands to the early evolution of Homo, and the variability selection hypothesis is evaluated. Expand
African climate change and faunal evolution during the Pliocene-Pleistocene
Abstract Environmental theories of African faunal evolution state that important evolutionary changes during the Pliocene–Pleistocene interval (the last ca. 5.3 million years) were mediated byExpand
Paleoenvironments of the earliest stone toolmakers, Gona, Ethiopia
Fluvio-lacustrine sediments of the Hadar and Busidima Formations along the northern Awash River (Ethiopia) archive almost three million years (3.4 to <0.6 Ma) of human evolution, including theExpand
Influence of Plio-Pleistocene aridification on human evolution: evidence from paleosols of the Turkana Basin, Kenya.
  • J. Wynn
  • Geography, Medicine
  • American journal of physical anthropology
  • 2004
The hypothesis that hominins evolved in savanna mosaics that changed through time, and suggest that the evolution of bovids and hom inins was driven by shifts in climatic instability and habitat variability, both diachronic and synchronic, is supported. Expand
The geology of Gona, Afar, Ethiopia
Deposits in the Gona Paleoanthropological Research Project (GPRP) area in eastcentral Ethiopia span most of the last ~6.4 m.y. and are among the longest and most complete paleoenvironmental and humanExpand