Arid
DOI10.1016/j.geobios.2011.10.004
A large new collection of Palaeostylops from the Paleocene of the Flaming Cliffs area (Ulan-Nur Basin, Gobi Desert, Mongolia), and an evaluation of the phylogenetic affinities of Arctostylopidae (Mammalia, Gliriformes)
Missiaen, Pieter1,2; Escarguel, Gilles3; Hartenberger, Jean-Louis4; Smith, Thierry2
通讯作者Missiaen, Pieter
来源期刊GEOBIOS
ISSN0016-6995
EISSN1777-5728
出版年2012
卷号45期号:3页码:311-322
英文摘要

Arctostylopids are enigmatic mammals known from the Paleocene and Early Eocene of Asia and North America. Based on molar similarities, they have most often been grouped with the extinct Notoungulata from South and Central America, but tarsal evidence links them to Asian basal gliriforms. Although Palaeostylops is the best-known arctostylopid genus, some points of its content and species level taxonomy remain uncertain. Here we report 255 upper and lower jaw fragments of Palaeostylops, five calcanea, three astragali, as well as the first known arctostylopid distal tibia. This new material was collected from the late Paleocene of the Flaming Cliffs area in Mongolia, in a single lens almost exclusively containing arctostylopid remains. Our study of the morphology and size of the new Palaeostylops dental material confirms the validity of two species, P. iturus and P. macrodon, and illustrates their morphological and biometrical variability and diagnostic differences. The distal tibia of Palaeostylops is relatively unspecialised and resembles the Asian gliriforms Pseudictops and Rhombomylus. We also review the relevance of the historically important genus Palaeostylops in view of other, more recently described but less abundant arctostylopid genera. Palaeostylops remains the reference taxon for the arctostylopid anterior dentition and postcranial morphology. For both anatomical regions, arctostylopids differ significantly from notoungulates, and present a mosaic of characters also seen in basal gliriforms. The notoungulate-like molars of Palaeostylops are highly specialized for arctostylopids and the arctostylopid molar morphotype is therefore better illustrated by the early middle Paleocene Asiostylops. This morphotype does not present any similarities to notoungulates, but shares a number of derived characters with basal gliriforms. Among gliriforms, the primitive arctostylopid morphotype is most similar to Astigale from the early Paleocene of South China, and we suggest that Arctostylopidae may therefore be more closely related to Astigalidae than to any other group. (C) 2012 Published by Elsevier Masson SAS.


英文关键词Arctostylopidae Gliriformes Flaming Cliffs Morphology Morphometry Species discrimination Phylogeny
类型Article
语种英语
国家Belgium ; France
收录类别SCI-E
WOS记录号WOS:000306448700006
WOS关键词INNER-MONGOLIA ; TOOTH SIZE ; EOCENE ; CHINA ; EVOLUTION ; PRIMATES ; ORIGIN
WOS类目Paleontology
WOS研究方向Paleontology
来源机构French National Research Institute for Sustainable Development ; E17
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/172486
作者单位1.Univ Ghent, Res Unit Palaeontol, B-9000 Ghent, Belgium;
2.Royal Belgian Inst Nat Sci, B-1000 Brussels, Belgium;
3.Univ Lyon 1, UMR CNRS 5276, Lab Geol Lyon Terre, F-69622 Villeurbanne, France;
4.Univ Montpellier 2, UMR CNRS 5554, Inst Sci Evolut, F-34095 Montpellier 5, France
推荐引用方式
GB/T 7714
Missiaen, Pieter,Escarguel, Gilles,Hartenberger, Jean-Louis,et al. A large new collection of Palaeostylops from the Paleocene of the Flaming Cliffs area (Ulan-Nur Basin, Gobi Desert, Mongolia), and an evaluation of the phylogenetic affinities of Arctostylopidae (Mammalia, Gliriformes)[J]. French National Research Institute for Sustainable Development, E17,2012,45(3):311-322.
APA Missiaen, Pieter,Escarguel, Gilles,Hartenberger, Jean-Louis,&Smith, Thierry.(2012).A large new collection of Palaeostylops from the Paleocene of the Flaming Cliffs area (Ulan-Nur Basin, Gobi Desert, Mongolia), and an evaluation of the phylogenetic affinities of Arctostylopidae (Mammalia, Gliriformes).GEOBIOS,45(3),311-322.
MLA Missiaen, Pieter,et al."A large new collection of Palaeostylops from the Paleocene of the Flaming Cliffs area (Ulan-Nur Basin, Gobi Desert, Mongolia), and an evaluation of the phylogenetic affinities of Arctostylopidae (Mammalia, Gliriformes)".GEOBIOS 45.3(2012):311-322.
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