A new species of Simiolus from the middle Miocene of the Tugen Hills, Kenya.

  title={A new species of Simiolus from the middle Miocene of the Tugen Hills, Kenya.},
  author={James B. Rossie and Andrew Hill},
  journal={Journal of human evolution},
Primitive Old World monkey from the earliest Miocene of Kenya and the evolution of cercopithecoid bilophodonty
The simple dentition and absence of bilophodonty in the Nakwai monkey indicate that the initial radiation of Old World monkeys was first characterized by a reorganization of basic molar morphology, and a reliance on cusps rather than lophs suggests frugivorous diets and perhaps hard object feeding.


A taxonomic revision of the small catarrhine primates from the early Miocene of East Africa.
  • T. Harrison
  • Biology
    Folia primatologica; international journal of primatology
  • 1988
This paper presents a detailed systematic revision of the small catarrhine primates from the early Miocene of East Africa, recovered from sites in Western Kenya and in Uganda dated at between 22 and
New fossil anthropoids from the middle Miocene of East Africa and their bearing on the origin of the oreopithecidae.
  • T. Harrison
  • Geography, Geology
    American journal of physical anthropology
  • 1986
Good fossil evidence is indicated to indicate that the origins of the Oreopithecidae can be traced back to the early Miocene of Africa.
New cercopithecoids and a hominoid from 12.5 Ma in the Tugen Hills succession, Kenya.
Cercopithecoid primate specimens from a fossil site in the Ngorora Formation of the Tugen Hills, Kenya, belong to the genus Victoriapithecus, possibly a new species, and are associated with a hominoid specimen that resembles Proconsul, and another tooth of a catarrhine, also probably hominoids.
A new Late Miocene great ape from Kenya and its implications for the origins of African great apes and humans
A new genus of great ape recently discovered from the early Late Miocene of Nakali, Kenya, called N. nakayamai could be close to the last common ancestor of the extant African apes and humans, and the associated primate fauna shows that hominoids and other non-cercopithecoid catarrhines retained higher diversity into the early late Miocene in East Africa than previously recognized.
New Species of Nyanzapithecus from Nachola, Northern Kenya
The presence of the new Nyanzapithecus species in Nachola has expanded the distribution and diversity of this genus, and suggests that oreopithecids may have been a relatively common element in the middle Miocene primate fauna of East Africa.
Palaeontological evidence for an Oligocene divergence between Old World monkeys and apes
The oldest known fossil ‘ape’ is described, represented by a partial mandible preserving dental features that place it with ‘nyanzapithecine’ stem hominoids, and the oldest stem member of the Old World monkey clade is reported, representing by a lower third molar.