New Specimens of Chilotheridium (Perissodactyla, Rhinocerotidae) from the Upper Miocene Namurungule and Nakali Formations, Northern Kenya

@inproceedings{Handa2015NewSO,
  title={New Specimens of Chilotheridium (Perissodactyla, Rhinocerotidae) from the Upper Miocene Namurungule and Nakali Formations, Northern Kenya},
  author={Naoto Handa and Masato Nakatsukasa and Yutaka Kunimatsu and Takehisa Tsubamoto and Hideo Nakaya},
  year={2015}
}
Abstract. Rhinocerotid fossils from the lower upper Miocene Namurungule and Nakali Formations, northern Kenya, are described. These materials reveal the following diagnostic characters of Chilotheridium pattersoni: a strongly constricted protocone with a flattened lingual wall, a hypocone groove, a developed crochet, and an antecrochet curved toward the entrance of the medisinus. Specimens previously described from the Namurungule Formation as rhinocerotids are re-identified as C. pattersoni… 

Additional specimens of Diceros (Perissodactyla, Rhinocerotidae) from the Upper Miocene Nakali Formation in Nakali, central Kenya

Abstract An upper incisor and upper and lower cheek teeth of Rhinocerotidae from the Upper Miocene of Nakali in central Kenya are described. Those specimens are identified as Diceros sp. The present

A new cane rat (Rodentia, Thryonomyidae) from the Upper Miocene Nakali Formation, northern Kenya

The present findings extend the first-appearance datum of the genus Thryonomys to the early late Miocene (~10 Ma), suggesting that the Thyonomys lineage inhabited Africa prior to ~10 Ma.

The Chalicotheriidae (Mammalia, Perissodactyla) from the upper Miocene Nakali Formation, Kenya

ABSTRACT Two upper molars of the Chalicotheriidae (Mammalia, Perissodactyla) from the upper Miocene (ca. 10 Ma) Nakali Formation of Nakali, central Kenya, are described. One is identified as M2. The

A new late Miocene elasmotheriine rhinoceros from Morocco

Parsimony analysis confirms the monophyly of the Elasmotheriinae, but that of the remaining Rhinocerotidae is questionable, and Eoazara is regarded as a member of a chiefly Eurasian clade, rather than as a survivor of a hypothetical African elasmotherIine branch.

A New Species of Nyanzachoerus (Mammalia, Artiodactyla, Suidae, Tetraconodontinae) from the Upper Miocene Nakali Formation, Kenya

A new species of Nyanzachoerus (Mammalia, Artiodactyla, Suidae, Tetraconodontinae) is described on the basis of gnathodental specimens from the basal upper Miocene Nakali Formation of central Kenya, characterized by a lower crown height and relatively weaker furrows of the molars and proportionally larger P3–P4 compared to M3 among the species of the genus.

The latest occurrence of the nyanzapithecines from the early Late Miocene Nakali Formation in Kenya, East Africa

The African primate fossil record is very poor between the mid-Middle and mid-Late Miocene. Nakali (~10–9.8 Ma) is one of the rare African localities that have yielded primate fossils from this

Listriodontine Suid and Tragulid Artiodactyls (Mammalia) from the Upper Miocene Nakali Formation, Kenya

If the Nakali specimen proves to be phyletically closely related to these two species, it indicates that a highly derived lineage of Listriodon existed in East Africa around 10 Ma, implying a possible migration of this lineage from Europe/Asia to East Africa during the middle or earliest late Miocene.

New specimens of a primitive hippopotamus, Kenyapotamus coryndonae, from the Upper Miocene Nakali Formation, Kenya

Received November 6, 2014 Accepted January 23, 2015 *1 Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama 790-8577, Japan *2 Faculty of Business Administration,

References

SHOWING 1-10 OF 57 REFERENCES

The Miocene Rhinocerotidae (Mammalia) of the Northern Sperrgebiet, Namibia

Three fossiliferous sites in the Northern Sperrgebiet have yielded remains of Rhinocerotidae, including Aceratherium acutirostratum, its first discovery in southern Africa, and a poorly preserved pyramidal probably belonging to Brachypotherium heinzelini.

A New Species of Aceratherium (Rhinocerotidae, Perissodactyla) from the Late Miocene of Nakhon Ratchasima, Northeastern Thailand

This new species has a mixture of primitive and derived characters that differ from the known species of Aceratherium, A. incisivum, and A. depereti, and is consistent with the latest Miocene age of the associated fauna and flora in the Tha Chang sand pits.

A primitive species of Chilotherium (Perissodactyla, Rhinocerotidae) from the Late Miocene of the Linxia Basin (Gansu, China)

The sequence of the Late Miocene Hipparion fauna in the Linxia Basin, which yields the remains described herein, is discussed and correlated with major faunal exchanges.

Brachypotherium minor n. sp., and other Rhinocerotidae from the Early Miocene of Buluk, Northern Kenya

It is suggested that the new species may be present at a small number of other sites, and that the brachypothere group may contain more than one African lineage, adding to the understanding of the diversity of African rhinoceroses.

A New Rhinoceros, Victoriaceros kenyensis gen. et sp. nov., and Other Perissodactyla from the Middle Miocene of Maboko, Kenya

Characters of the teeth and skull support an assignment to the subfamily Elasmotheriinae, a group best known in the middle and upper Miocene, but whose monophyly is disputable, as some of their tooth characters could be adaptations to a grazing diet (in agreement with their distribution in the Maboko beds).

Les Rhinocerotidae (Mammalia, Perissodactyla) miocènes et pliocènes des Tugen Hills (Kénya)

More than 70 determinable and usable rhinoceros remains belonging to nine species were yielded by 26 Miocene and Pliocene sites from the Tugen Hills (Kenya), namely Cheboit, Kapsomin, Kipsaraman and

PLIOCENE RHINOCEROTIDAE (MAMMALIA) FROM HADAR AND DIKIKA (LOWER AWASH, ETHIOPIA), AND A REVISION OF THE ORIGIN OF MODERN AFRICAN RHINOS

Fossil representatives of the two extant African rhinoceros lineages, Ceratotherium and Diceros, co-occur in the Pliocene deposits of the Hadar Formation, Ethiopia, and the split between the two lineages probably indicates ecological divergence and character displacement between browsing versus grazing specializations.

The Neogene rhinoceroses of Namibia

All but one of the 81 rhinocerotid fossils from Arrisdrift constitute a homogeneous sample pertaining to a very large species of cursorial rhino, the exception is an isolated magnum which suggests a small to medium-sized short legged form, perhaps Chilotheridium pattersoni.

A revision of Aceratherium blanfordi Lydekker, 1884 (Mammalia: Rhinocerotidae) from the Early Miocene of Pakistan: postcranials as a key

A phylogenetic analysis based on 282 morphological characters scored for 28 taxa strengthens this statement and supports Pleuroceros and Mesaceratherium as monophyletic genera within Rhinocerotinae.
...