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

  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},
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,



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

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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)

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

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

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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


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The Neogene rhinoceroses of Namibia

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

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