First discovery of colobine fossils from the Late Miocene/Early Pliocene in central Myanmar

Masanaru Takai, Thaung-Htike, Zin-Maung-Maung-Thein, Aung Naing Soe, Maung Maung, Takehisa Tsubamoto, Naoko Egi, Takeshi D. Nishimura, Yuichiro Nishioka

研究成果: Article

6 引用 (Scopus)

抄録

Here we report two kinds of colobine fossils discovered from the latest Miocene/Early Pliocene Irrawaddy sediments of the Chaingzauk area, central Myanmar. A left mandibular corpus fragment preserving M1-3 is named as a new genus and species, Myanmarcolobus yawensis. Isolated upper (M1?) and lower (M2) molars are tentatively identified as Colobinae gen. et sp. indet. Although both forms are medium-sized colobines, they are quite different from each other in M2 morphology. The isolated teeth of the latter show typical colobine-type features, so it is difficult to identify their taxonomic position, whereas lower molars of Myanmarcolobus have unique features, such as a trapezoid-shaped long median lingual notch, a deeply concave median buccal cleft, a strongly developed mesiobuccal notch, and rather obliquely running transverse lophids. Compared with fossil and living Eurasian colobine genera, Myanmarcolobus is most similar in lower molar morphology to the Pliocene Dolichopithecus of Europe rather than to any Asian forms. In Dolichopithecus, however, the tooth size is much larger and the median lingual notch is mesiodistally much shorter than that of Myanmarcolobus. The discovery of Myanmarcolobus in central Myanmar is the oldest fossil record in Southeast Asia not only of colobine but also of cercopithecid monkeys and raises many questions regarding the evolutionary history of Asian colobine monkeys.

元の言語English
ページ(範囲)1-15
ページ数15
ジャーナルJournal of Human Evolution
84
DOI
出版物ステータスPublished - 2015 7 1
外部発表Yes

Fingerprint

Myanmar
tooth
Pliocene
fossils
Miocene
fossil
tongue
monkeys
teeth
Southeast Asia
fossil record
new genus
new species
South East Asia
history
sediment
sediments
Burma
Fossil
Asia

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Arts and Humanities (miscellaneous)
  • Education

これを引用

Takai, M., Thaung-Htike, Zin-Maung-Maung-Thein, Soe, A. N., Maung, M., Tsubamoto, T., ... Nishioka, Y. (2015). First discovery of colobine fossils from the Late Miocene/Early Pliocene in central Myanmar. Journal of Human Evolution, 84, 1-15. https://doi.org/10.1016/j.jhevol.2015.04.003

First discovery of colobine fossils from the Late Miocene/Early Pliocene in central Myanmar. / Takai, Masanaru; Thaung-Htike; Zin-Maung-Maung-Thein; Soe, Aung Naing; Maung, Maung; Tsubamoto, Takehisa; Egi, Naoko; Nishimura, Takeshi D.; Nishioka, Yuichiro.

:: Journal of Human Evolution, 巻 84, 01.07.2015, p. 1-15.

研究成果: Article

Takai, M, Thaung-Htike, Zin-Maung-Maung-Thein, Soe, AN, Maung, M, Tsubamoto, T, Egi, N, Nishimura, TD & Nishioka, Y 2015, 'First discovery of colobine fossils from the Late Miocene/Early Pliocene in central Myanmar', Journal of Human Evolution, 巻. 84, pp. 1-15. https://doi.org/10.1016/j.jhevol.2015.04.003
Takai M, Thaung-Htike, Zin-Maung-Maung-Thein, Soe AN, Maung M, Tsubamoto T その他. First discovery of colobine fossils from the Late Miocene/Early Pliocene in central Myanmar. Journal of Human Evolution. 2015 7 1;84:1-15. https://doi.org/10.1016/j.jhevol.2015.04.003
Takai, Masanaru ; Thaung-Htike ; Zin-Maung-Maung-Thein ; Soe, Aung Naing ; Maung, Maung ; Tsubamoto, Takehisa ; Egi, Naoko ; Nishimura, Takeshi D. ; Nishioka, Yuichiro. / First discovery of colobine fossils from the Late Miocene/Early Pliocene in central Myanmar. :: Journal of Human Evolution. 2015 ; 巻 84. pp. 1-15.
@article{e55b32964dc048a692d29a44f0c2ba12,
title = "First discovery of colobine fossils from the Late Miocene/Early Pliocene in central Myanmar",
abstract = "Here we report two kinds of colobine fossils discovered from the latest Miocene/Early Pliocene Irrawaddy sediments of the Chaingzauk area, central Myanmar. A left mandibular corpus fragment preserving M1-3 is named as a new genus and species, Myanmarcolobus yawensis. Isolated upper (M1?) and lower (M2) molars are tentatively identified as Colobinae gen. et sp. indet. Although both forms are medium-sized colobines, they are quite different from each other in M2 morphology. The isolated teeth of the latter show typical colobine-type features, so it is difficult to identify their taxonomic position, whereas lower molars of Myanmarcolobus have unique features, such as a trapezoid-shaped long median lingual notch, a deeply concave median buccal cleft, a strongly developed mesiobuccal notch, and rather obliquely running transverse lophids. Compared with fossil and living Eurasian colobine genera, Myanmarcolobus is most similar in lower molar morphology to the Pliocene Dolichopithecus of Europe rather than to any Asian forms. In Dolichopithecus, however, the tooth size is much larger and the median lingual notch is mesiodistally much shorter than that of Myanmarcolobus. The discovery of Myanmarcolobus in central Myanmar is the oldest fossil record in Southeast Asia not only of colobine but also of cercopithecid monkeys and raises many questions regarding the evolutionary history of Asian colobine monkeys.",
keywords = "Cercopithecidae, Colobinae, Irrawaddy sediments, Late Neogene, Myanmarcolobus, Southeast Asia",
author = "Masanaru Takai and Thaung-Htike and Zin-Maung-Maung-Thein and Soe, {Aung Naing} and Maung Maung and Takehisa Tsubamoto and Naoko Egi and Nishimura, {Takeshi D.} and Yuichiro Nishioka",
year = "2015",
month = "7",
day = "1",
doi = "10.1016/j.jhevol.2015.04.003",
language = "English",
volume = "84",
pages = "1--15",
journal = "Journal of Human Evolution",
issn = "0047-2484",
publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - First discovery of colobine fossils from the Late Miocene/Early Pliocene in central Myanmar

AU - Takai, Masanaru

AU - Thaung-Htike,

AU - Zin-Maung-Maung-Thein,

AU - Soe, Aung Naing

AU - Maung, Maung

AU - Tsubamoto, Takehisa

AU - Egi, Naoko

AU - Nishimura, Takeshi D.

AU - Nishioka, Yuichiro

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Here we report two kinds of colobine fossils discovered from the latest Miocene/Early Pliocene Irrawaddy sediments of the Chaingzauk area, central Myanmar. A left mandibular corpus fragment preserving M1-3 is named as a new genus and species, Myanmarcolobus yawensis. Isolated upper (M1?) and lower (M2) molars are tentatively identified as Colobinae gen. et sp. indet. Although both forms are medium-sized colobines, they are quite different from each other in M2 morphology. The isolated teeth of the latter show typical colobine-type features, so it is difficult to identify their taxonomic position, whereas lower molars of Myanmarcolobus have unique features, such as a trapezoid-shaped long median lingual notch, a deeply concave median buccal cleft, a strongly developed mesiobuccal notch, and rather obliquely running transverse lophids. Compared with fossil and living Eurasian colobine genera, Myanmarcolobus is most similar in lower molar morphology to the Pliocene Dolichopithecus of Europe rather than to any Asian forms. In Dolichopithecus, however, the tooth size is much larger and the median lingual notch is mesiodistally much shorter than that of Myanmarcolobus. The discovery of Myanmarcolobus in central Myanmar is the oldest fossil record in Southeast Asia not only of colobine but also of cercopithecid monkeys and raises many questions regarding the evolutionary history of Asian colobine monkeys.

AB - Here we report two kinds of colobine fossils discovered from the latest Miocene/Early Pliocene Irrawaddy sediments of the Chaingzauk area, central Myanmar. A left mandibular corpus fragment preserving M1-3 is named as a new genus and species, Myanmarcolobus yawensis. Isolated upper (M1?) and lower (M2) molars are tentatively identified as Colobinae gen. et sp. indet. Although both forms are medium-sized colobines, they are quite different from each other in M2 morphology. The isolated teeth of the latter show typical colobine-type features, so it is difficult to identify their taxonomic position, whereas lower molars of Myanmarcolobus have unique features, such as a trapezoid-shaped long median lingual notch, a deeply concave median buccal cleft, a strongly developed mesiobuccal notch, and rather obliquely running transverse lophids. Compared with fossil and living Eurasian colobine genera, Myanmarcolobus is most similar in lower molar morphology to the Pliocene Dolichopithecus of Europe rather than to any Asian forms. In Dolichopithecus, however, the tooth size is much larger and the median lingual notch is mesiodistally much shorter than that of Myanmarcolobus. The discovery of Myanmarcolobus in central Myanmar is the oldest fossil record in Southeast Asia not only of colobine but also of cercopithecid monkeys and raises many questions regarding the evolutionary history of Asian colobine monkeys.

KW - Cercopithecidae

KW - Colobinae

KW - Irrawaddy sediments

KW - Late Neogene

KW - Myanmarcolobus

KW - Southeast Asia

UR - http://www.scopus.com/inward/record.url?scp=84931571360&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84931571360&partnerID=8YFLogxK

U2 - 10.1016/j.jhevol.2015.04.003

DO - 10.1016/j.jhevol.2015.04.003

M3 - Article

C2 - 25978976

AN - SCOPUS:84931571360

VL - 84

SP - 1

EP - 15

JO - Journal of Human Evolution

JF - Journal of Human Evolution

SN - 0047-2484

ER -