New four-million-year-old hominid species from Kanapoi and Allia Bay, Kenya

  title={New four-million-year-old hominid species from Kanapoi and Allia Bay, Kenya},
  author={Meave G. Leakey and Craig S. Feibel and Ian Mcdougall and Alan W. Walker},
Nine hominid dental, cranial and postcranial specimens from Kanapoi, Kenya, and 12 specimens from Allia Bay, Kenya, are described here as a new species of Australopithecus dating from between about 3.9 million and 4.2 million years ago. The mosaic of primitive and derived features shows this species to be a possible ancestor to Australopithecus afarensis and suggests that Ardipithecus ramidus is a sister species to this and all later hominids. A tibia establishes that hominids were bipedal at… Expand
Australopithecus garhi: a new species of early hominid from Ethiopia.
Discovery of 2.5 Ma hominid cranial and dental remains from the Hata beds of Ethiopia's Middle Awash allows recognition of a new species of Australopithecus, descended from Australipithecus afarensis and is a candidate ancestor for early Homo. Expand
New hominin genus from eastern Africa shows diverse middle Pliocene lineages
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A 3.8-million-year-old hominin cranium from Woranso-Mille, Ethiopia
A nearly complete hominin cranium from Woranso-Mille (Ethiopia) that is date to 3.8 million years ago is described, providing the first glimpse of the entire craniofacial morphology of the earliest known members of the genus Australopithecus. Expand
A new hominid from the Upper Miocene of Chad, Central Africa
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A new hominin from the Basal Member of the Hadar Formation, Dikika, Ethiopia, and its geological context.
The new fossil, DIK-2-1, is a fragment of a left mandible and associated dentition from the Basal Member of the Hadar Formation at Dikika, in the Awash Valley of Ethiopia, dating to greater than 3.4 Ma. Expand
First hominid from the Miocene (Lukeino Formation, Kenya)
Abstract Remains of an early hominid have been recovered from four localities in the Lukeino Formation, Tugen Hills, Kenya, in sediments aged ca 6 Ma. 13 fossils are known, belonging to at least fiveExpand
Late Miocene hominin teeth from the Gona Paleoanthropological Research Project area, Afar, Ethiopia.
Five hominin teeth from two periods recovered from the Adu-Asa Formation are described and the derived morphology of the large, non-sectorial maxillary canine and mandibular third premolar links them with later hominins and they are phenetically distinguishable and thus phyletically distinct from extant apes. Expand
The Pliocene hominin diversity conundrum: Do more fossils mean less clarity?
A closer look at the currently available fossil evidence from Ethiopia, Kenya, and Chad indicates that Australopithecus afarensis was not the only hominin species during the middle Pliocene, and that there were other species clearly distinguishable from it by their locomotor adaptation and diet. Expand
New hominids from the Lake Turkana Basin, Kenya.
New hominid fossils from the Lake Turkana Basin range in age from ca. 3.35 to ca. 1.0 Ma. Those recovered from sediments stratigraphically just above the Tulu Bor Tuff in the Lomekwi Member of theExpand
New species from Ethiopia further expands Middle Pliocene hominin diversity
The new species from Woranso–Mille shows that there were at least two contemporaneous hominin species living in the Afar region of Ethiopia between 3.3 and 3.5 million years ago, and further confirms early hom inin taxonomic diversity in eastern Africa during the Middle Pliocene epoch. Expand


Australopithecus ramidus, a new species of early hominid from Aramis, Ethiopia
The antiquity and primitive morphology of A. ramidus suggests that it represents a long-sought potential root species for the Hominidae. Expand
The first skull and other new discoveries of Australopithecus afarensis at Hadar, Ethiopia
53 new specimens from the Hadar Formation in Ethiopia confirm the taxonomic unity of A. afarensis and constitute the largest body of evidence for about 0.9 million years of stasis in the earliest known hominid species. Expand
Hominid Humeral Fragment from Early Pleistocene of Northwestern Kenya
The distal end of a hominoid humerus recovered from early Pleistocene sediments in the Kanapoi drainage near the southern end of Lake Rudolf yielded a potassium/argon date of 2.5 million years, considered more likely to represent Australopithecus s.s. than Paranthropus. Expand
Four-million-year-old hominids from East Lake Turkana, Kenya.
A piece of mandible and several isolated teeth are reported from fluviatile sediments older than 4 million years at East Lake Turkana. They most closely resemble hominids from Laetoli, Tanzania andExpand
Pliocene hominids from the Hadar formation, Ethiopia (1973–1977): Stratigraphic, chronologic, and paleoenvironmental contexts, with notes on hominid morphology and systematics
The large collections of fossil hominid remains from Hadar, Ethiopia, derive from the Afar Triangle of the continental East African Rift. The fossils constitute much of the paratype series ofExpand
New discoveries of Australopithecus at Maka in Ethiopia
The discovery of new fossils from Maka, dated to 3.4 Myr ago, provide powerful support for the interpretation of A. afarensis as a single, ecologically diverse, sexually dimorphic, bipedal Pliocene primate species whose known range encompassed Ethiopia and Tanzania. Expand
Laetoli : a Pliocene site in northern Tanzania
This work presents the results of intensive fieldwork carried out from 1974 to 1981 at the site of one of the richest fossil sites yet discovered in Africa. In addition to hominid fossils, theExpand
Ecological and temporal placement of early Pliocene hominids at Aramis, Ethiopia
Radioisotopic dating, geochem-ical analysis of interbedded volcanic ashes and biochronological considerations place the hominid-bearing deposits in the Middle Awash research area of Ethiopia's Afar depression at around 4.4 million years of age. Expand
Talocrural joint in African hominoids: implications for Australopithecus afarensis.
Comparisons between the hominids and African pongids clearly illustrate the anatomical and mechanical changes that occurred in this joint as a consequence of the evolutionary transition to habitual bipedality. Expand
Body size and proportions in early hominids.
  • H. Mchenry
  • Biology, Medicine
  • American journal of physical anthropology
  • 1992
These values appear to be consistent with the range of size variation seen in the entire postcranial samples that can be assigned to species, and probably those equations based on the human samples are better than those based on all Hominoidea. Expand