Newly discovered cercopithecid, equid and other mammalian fossils from the Chorora Formation, Ethiopia

Suwa, Gen; Beyene, Yonas; Nakaya, Hideo; Bernor, Raymond L.; Boisserie, J.-R.; Bibi, Faysal; Ambrose, Stanley H.; Sano, Katsuhiro; Katoh, Shigehiro; Asfaw, Berhane

doi:10.1537/ase.150206

Cited by 33 publications

(29 citation statements)

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“…The hominoid locality Chorora (Ethiopia) (Bibi et al, 2013); Yushe (Opdyke et al, 2013); Wudu-Longjiagou (Xue et al, 2006); Nakali (Kunimatsu et al, 2007); and Samburu Hills (Sawada et al, 1998). Kunimatsu et al, 2007;Suwa et al, 2015).Çorakyerler has the highest taxonomic similarity to localities with lower mean hypsodonty rates such as Nakali. A high similarity value was also observed betweeņ Corakyerler and the Georgian MN 11-equivalent locality Udabno I, which has yielded the hominid Udabnopithecus garedziensis.…”

Section: Discussionmentioning

confidence: 99%

Magnetostratigraphy and paleoecology of the hominid-bearing locality Çorakyerler, Tuglu Formation (Çankiri Basin, Central Anatolia)

Kaya¹,

Kaymakçı²,

Bibi³

et al. 2016

Journal of Vertebrate Paleontology

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Ouranopithecus turkae, from the late Miocene ofÇorakyerler in Central Anatolia, is considered one of the last known occurrences of great ape in the eastern Mediterranean. TheÇorakyerler fauna has previously been correlated with MN 11 to early MN 12 on the basis of biochronology, and its faunal composition has been found to contrast with those from contemporaneous sites. In this paper, we present the magnetostratigraphy of theÇorakyerler site and an expanded interpretation of its paleobiogeographical and paleoecological contexts. The paleomagnetic results reveal two intervals of normal polarity and an intervening interval of reversed polarity in the main fossiliferous section. Of the three likely age correlations spanning 8.13-7.15 Ma (MN 11-MN 12), we favor correlation with chron 4n, with a possible age range of the fossiliferous deposit between 8.11 and 7.64 Ma (late MN 11). The geographic distribution of genus-level faunal similarity and mean hypsodonty show thatÇorakyerler is a typical representative of the Pikermian chronofauna with a wide range of faunal similarity, including late Miocene localities from the eastern Mediterranean, eastern Asia, and eastern Africa. Lithological and sedimentological characteristics of the fossiliferous horizon, however, indicate a lacustrine depositional environment and relatively humid local conditions within the more arid regional context. This special setting could explain the unexpected occurrence of a hominid primate atÇorakyerler.

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Section: Discussionmentioning

confidence: 99%

Magnetostratigraphy and paleoecology of the hominid-bearing locality Çorakyerler, Tuglu Formation (Çankiri Basin, Central Anatolia)

Kaya¹,

Kaymakçı²,

Bibi³

et al. 2016

Journal of Vertebrate Paleontology

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“…The Baynunah specimens were directly compared with other Miocene hippopotamids: the middle to late Miocene Kenyapotamus spp. (Boisserie et al, 2010;Boisserie et al, 2017;Tsubamoto et al, 2016); the new hippopotamine material from Chorora (Katoh et al, 2016;Suwa et al, 2015); Archaeopotamus spp. from the Nawata Formation at Lothagam, Kenya (Boisserie, 2005;Weston, 2000Weston, , 2003; Hexaprotodon garyam from the Anthracotheriid Unit at Toros-Ménalla, Chad (Boisserie et al, 2005a); and the hippopotamine remains from the Adu Asa Formation in the Middle Awash Valley (western margin), Ethiopia (Boisserie & Haile-Selassie, 2009).…”

Section: Methodsmentioning

confidence: 99%

A new species of hippopotamine (Cetartiodactyla, Hippopotamidae) from the late Miocene Baynunah Formation, Abu Dhabi, United Arab Emirates

Boisserie¹,

Schuster²,

Beech³

et al. 2017

Palaeovertebrata

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The discovery of new hippopotamid material from the late Miocene Baynunah Formation (Abu Dhabi, United Arab Emirates) has prompted the revision of the existing material of this as yet unnamed fossil taxon. The Baynunah hippopotamid appears to be distinct from all other contemporary and later species in having a relatively more elongate symphysis, a feature similar to the earlier (and more primitive) Kenyapotamus. Yet, the Baynunah hippopotamid presents a dentition typical of the Hippopotaminae. It is therefore a distinct species attributed to the later subfamily, described and named in this contribution. This species provides further evidence for a ca. 8 Ma evolutionary event (termed "Hippopotamine Event") that initiated the spread and ecological significance of the Hippopotaminae into wet habitats across Africa and Eurasia. The morphological affinities of the new species from Abu Dhabi suggest that the Arabian Peninsula was not a dispersal route from Africa toward southern Asia for the Hippopotamidae at ca. 7.5 Ma to 6.5 Ma.

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“…H. primigenium (Bernor et al 1997) is best known from the 16 skeletons that have been excavated from Höwenegg, Germany (10. 3 Ma., Swisher 1996;Woodburne et al 1996 (Suwa et al 2015).…”

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confidence: 99%

The Maragheh hipparions, late Miocene of Azarbaijan, Iran

Bernor

Ataabadi

Meshida

et al. 2016

Palaeobio Palaeoenv

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Morphological analyses of hipparionine astragali, calcaneum, third phalanx and metapodials from the late Miocene locality of Maragheh, Iran, was carried out using bivariate plots and log10 ratio diagrams. The results, together with previous studies on cranial and dental material, have allowed us to characterise and define the following equid species in the Maragheh assemblage: Hipparion gettyi, aff. Hippotherium brachypus, Cremohipparion aff. moldavicum, Cremohipparion matthewi and Hipparion campbelli. These species are arrayed in three successive biostratigraphic intervals: H. gettyi, late Vallesian Lower Maragheh horizon; aff. H. brachypus and Cr. aff. moldavicum, early Turolian Middle Maragheh levels; and H. campbelli, late early Turolian Upper Maragheh interval. The small hipparion, Cr. matthewi, would appear to range throughout all biostratigraphic intervals of Maragheh. The proposed taxonomic and biostratigraphic resolution here is slightly different from previous studies especially in the recognition of aff. H. brachypus instead of Hipparion prostylum. The Maragheh hipparion assemblages are well correlated to those from Turkey, Greece, the Balkans and Black Sea region and are clearly different from those of Central and Western Europe, central Asia, China and Africa. Maragheh Cremohipparion is related to species of Cremohipparion from Greece, China and the Siwaliks. A clear niche differentiation based on palaeodiet studies has been revealed in Maragheh hipparions, indicative of different environmental adaptations amongst these species.

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Newly discovered cercopithecid, equid and other mammalian fossils from the Chorora Formation, Ethiopia

Cited by 33 publications

References 50 publications

Magnetostratigraphy and paleoecology of the hominid-bearing locality Çorakyerler, Tuglu Formation (Çankiri Basin, Central Anatolia)

Magnetostratigraphy and paleoecology of the hominid-bearing locality Çorakyerler, Tuglu Formation (Çankiri Basin, Central Anatolia)

A new species of hippopotamine (Cetartiodactyla, Hippopotamidae) from the late Miocene Baynunah Formation, Abu Dhabi, United Arab Emirates

The Maragheh hipparions, late Miocene of Azarbaijan, Iran

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