A New Genus and Species of Bunodont Artiodactyl from the Eocene Pondaung Formation, Myanmar

Tsubamoto, Takehisa; Egi, Naoko; Takai, Masanaru; Thaung-Htike,; Zin-Maung-Maung-Thein,

doi:10.2517/1342-8144-17.4.297

Cited by 20 publications

(18 citation statements)

References 17 publications

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“…27; in addition our analysis places the Asian Myaingtherium kenyapotamoides into this sub-family. This position is in agreement with previous cladistic results 28 , but contradicts close relationships between M. kenyapotamoides and the Miocene African Kenyapotamus 28 . The clade HB (Bothriodontinae þ Hippopotamidae; Fig.…”

Section: Systematic Palaeontology Of Epirigenys Lokonensissupporting

confidence: 91%

Hippos stem from the longest sequence of terrestrial cetartiodactyl evolution in Africa

Lihoreau

Boisserie

Manthi³

et al. 2015

Nat Commun

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According to molecular data, hippopotamuses and cetaceans form a clade excluding other extant cetartiodactyls. Despite a wealth of spectacular specimens documenting cetacean evolution, this relationship remains poorly substantiated by the fossil record. Indeed, the evolutionary path leading from the hippo-cetacean ancestor to Hippopotamidae is plagued by missing fossil data and phylogenetic uncertainties. Only an origination within the extinct anthracotheres is compatible with molecular results, substantial filling of phyletic gaps and recent discoveries of early Miocene hippopotamids. Yet, the anthracothere stock that gave rise to Hippopotamidae has not been identified. Consequently, recent phylogenetic accounts do not properly integrate the anthracotheriid hypothesis, and relate Hippopotamidae to a stretched ghost lineage and/or close to Suina. Here we describe a new anthracothere from Lokone (Kenya) that unambiguously roots the Hippopotamidae into a well-identified group of bothriodontines, the first large mammals to invade Africa. The hippos are deeply anchored into the African Paleogene.

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Section: Systematic Palaeontology Of Epirigenys Lokonensissupporting

confidence: 91%

Hippos stem from the longest sequence of terrestrial cetartiodactyl evolution in Africa

Lihoreau

Boisserie

Manthi³

et al. 2015

Nat Commun

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“…Bande and Prakash, 1986; the magnetostratigraphic polarity of these deposits (Benammi et al, 2002) and recent U/Pb and fission-track ages of detrital zircons (Tsubamoto et al, 2002(Tsubamoto et al, , 2011Zaw et al, 2015) indicate a correlation with the chron C38n, dated between 40.1 and 38.6 Myr (Gradstein et al, 2012). Pondaung deposits are thus contemporary with the end of the Middle Eocene Climatic Optimum (MECO), the most prominent transient warming episode of the middle Eocene, and its subsequent cooling event (Bohaty and Zachos, 2003;Villa et al, 2008;Bijl et al, 2010;Bosboom et al, 2014).…”

Section: Introductionmentioning

confidence: 93%

Late middle Eocene fossil wood of Myanmar: Implications for the landscape and the climate of the Eocene Bengal Bay

Licht

Boura

Franceschi

et al. 2015

Review of Palaeobotany and Palynology

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“…The Hayashibara Museum of Natural Sciences and Mongolian Paleontological Center Joint Paleontological Expedition has been conducting palaeontological and geological surveys of the Ergilin Dzo Formation and related localities since 2004 (Tsubamoto et al 2006(Tsubamoto et al , 2011a(Tsubamoto et al , 2011b(Tsubamoto et al , 2012a(Tsubamoto et al , 2012b(Tsubamoto et al , 2013a(Tsubamoto et al , 2013bEgi et al 2009;Saneyoshi et al 2010;Suzuki et al 2010). During the expeditions, several carnivoran specimens were collected (Egi et al 2009).…”

Section: Introductionmentioning

confidence: 96%

Taxonomic revisions on nimravids and small feliforms (Mammalia, Carnivora) from the Upper Eocene of Mongolia

et al. 2015

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This study reports occurrences of feliform carnivorans from the Upper Eocene Ergilin Dzo Formation and Alag Tsav locality of southeastern Mongolia. Nimravus mongoliensis (Nimravidae) is distinguished from other species in having a deep mandible, a longer p/1-2 and m/2 relative to p/4, and relatively wider P3/. Eofelis sp. (Nimravidae), a genus previously known only from the Oligocene of France is found in the Ergilin Dzo Formation. Alagtsavbaatar indigenus comb. nov. (Alagtsavbaatar gen. nov.; Feliformia) is established for new specimens from the Ergilin Dzo Formation and the previously known Stenoplesictis specimen from the Alag Tsav locality based on its characteristics such as moderately developed buccal cingulid and cingular and accessory cuspids on p/32 4, wide m/1 trigonid and double-rooted m/2 with a trenchant talonid. Stenoplesictis simplex from the Ergilin Dzo Formation is revised to Asiavorator gracilis, extending its chronological range back to the Late Eocene. Geographical and chronological distributions and morphological comparisons suggest that the Nimravidae originated by the Middle Eocene in southern East Asia and migrated northward in the Late Eocene, whereas the early small feliforms immigrated to northern East Asia in the Late Eocene and stayed within the middle-to-high-latitude area.

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A New Genus and Species of Bunodont Artiodactyl from the Eocene Pondaung Formation, Myanmar

Cited by 20 publications

References 17 publications

Hippos stem from the longest sequence of terrestrial cetartiodactyl evolution in Africa

Hippos stem from the longest sequence of terrestrial cetartiodactyl evolution in Africa

Late middle Eocene fossil wood of Myanmar: Implications for the landscape and the climate of the Eocene Bengal Bay

Taxonomic revisions on nimravids and small feliforms (Mammalia, Carnivora) from the Upper Eocene of Mongolia

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