A surprisingly “flat-faced” hominin came to light with Meave Leakey’s discovery and naming of Kenyanthropus platyops (“flat-faced human from Kenya”) in 1999. Australopithecus sediba. The only species in this genus, this hominin lived about 3 million years ago. Australopithecus africanus. Kenyanthropus (Australopithecus) Platyops Another fossil was discovered in 2001 that could be considered an australopithecine ( Leakey et al., 2001 ). Kenyanthropus platyops. The degree of orthognathism was surprising for such an early hominin. Smaller cranial capacity Small ear holes Toe bone Kenyanthropus platyops have a very smaller cranial capacity and its capacity is very difficult to measure because it is badly distorted. 3.5 mya East Africa Derived: flat face Ancestral: small cranial capacity. front to back) and sharing similarities with Au. 1.98 mya South Africa Derived: round orbits The estimated cranial capacity of the so-called Kenyanthropus platyops was low, at around 350 3cm . Until scientists find more fossils belonging to Kenyanthropus platyops, both the species identification and the sex of KNM-WT 40000 remain unresolved. Physical characteristics cont.. J. KNM-WT-40000, Kenyanthropus platyops, Lomekwi, West Turkana, Kenya, approx. Since KNM-WT 40000 is the only known Kenyanthropus individual, this makes features for the entire species hard to pinpoint. Kenyanthropus, for a very deformed skull from the Lomekwi Basin in Kenya that dates back some 3.5 million years (i.e., contemporary to A. afarensis). Kenyanthropus platyops. The cranial capacity of K. platyops is also suspect due to the reconstruction but if accurate, it was fairly high relative to other species of the time, at 400–500 cc. 3.5 mya, CRANIAL CAPACITY: approx. aka taung child 3-2.3 mya South Africa Derived: anterior pillars/diastema Ancestral: prognathism. But what led its discoverers to propose a new genus was its face, which was long and flat. It is said to be a size of chimpanzee’s skull. Kenyanthropus platyops, meaning 'flat face', is a 3.5 to 3.2 million year old hominin fossil that was discovered in Lake Turkana in Kenya in 1999 by Justus Erus, who … anamensis and afarensis, the lower face of K. platyops is surprisingly (and possibly mistakenly) orthognathic for its early date. Review of Primitive Characteristics PHYSICAL CHARACTERISTICS. While possessing primitive ape-like molars (elongated mesiodistally, i.e. It too is associated with woodland fauna. A badly crushed and distorted cranium found at Lomekwi on the western shore of Lake Turkana in northern Kenya in 1998 was assigned to a new genus and species, “human from Kenya,” Kenyanthropus platyops (3.5 mya). However, the species name is based on a distorted and fragmented skull and many debate its validity. : flat face Ancestral: prognathism s skull: flat face Ancestral prognathism.: anterior pillars/diastema Ancestral: prognathism ( and possibly mistakenly ) orthognathic for its early date,.. 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