New records of archaic ungulates from the Lower Eocene of Sanshui Basin, Guangdong, China

doi:10.1080/08912963.2015.1034120

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	New records of archaic ungulates from the Lower Eocene of Sanshui Basin, Guangdong, China
	Mao, Fang-Yuan; Wang, Yuan-Qing; Li, Qian; Jin, Xun
刊名	HISTORICAL BIOLOGY
	2016-08-17
卷号	28 期号:6 页码:787-802
关键词	Mammalia Altungulata Phenacolophidae Sanshuilophus Guangdong Sanshui Basin
DOI	10.1080/08912963.2015.1034120
文献子类	Article
英文摘要	Phenacolophidae is a group of little known archaic ungulates from the Late Paleocene to Middle Eocene of Asia. Its phylogenetic relationships with other altungulates have remained uncertain, partly because most phenacolophids are represented by poorly preserved material. Here we report a new phenacolophid, Sanshuilophus zhaoi gen. et sp. nov., from the Lower Eocene Huayong Formation of the Sanshui Basin, Guangdong, China. Although still fragmentary, the new specimens show that the new taxon is characterised by relatively large body size (except for Zaisanolophus), sub-molariform premolars, relatively higher bilophodont molars that lack the mesostyle, and tooth enamel microstructure with true prisms and typical Hunter-Schreger bands (HSB). With the new specimens and a review of the published phenacolophid material, we are able to provide an alternative identification for the tooth loci for the type specimen of Phenacolophus and further present an emended diagnosis for Phenacolophidae. The tooth morphology and enamel microstructure provide new evidence to support the notion that phenacolophids differ from species of Embrithopoda in having low-crown teeth, considerably slanting lophids, distinct paralophids and lacking the arsinoitheriid radial enamel. Phenacolophidae should not be included in Tethytheria but probably represent a stem group for altungulates, if not for all archaic ungulates.
WOS关键词	ENAMEL MICROSTRUCTURE ; PLACENTAL MAMMALS ; TOOTH ENAMEL ; PALEOCENE ; PERISSODACTYLA ; EMBRITHOPODA ; PHYLOGENY ; EVOLUTION
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Paleontology
语种	英语
WOS记录号	WOS:000373984900005
资助机构	Major Basic Research Projects of MST of China(2012CB821900) ; National Natural Science Foundation of China(41404022) ; Chinese Academy of Sciences(KZCX2-EW-106) ; Special Fund for Fossil Excavation and Preparation of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7078]
专题	古脊椎动物与古人类研究所_图书馆1
作者单位	Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Mao, Fang-Yuan,Wang, Yuan-Qing,Li, Qian,et al. New records of archaic ungulates from the Lower Eocene of Sanshui Basin, Guangdong, China[J]. HISTORICAL BIOLOGY,2016,28(6):787-802.
APA	Mao, Fang-Yuan,Wang, Yuan-Qing,Li, Qian,&Jin, Xun.(2016).New records of archaic ungulates from the Lower Eocene of Sanshui Basin, Guangdong, China.HISTORICAL BIOLOGY,28(6),787-802.
MLA	Mao, Fang-Yuan,et al."New records of archaic ungulates from the Lower Eocene of Sanshui Basin, Guangdong, China".HISTORICAL BIOLOGY 28.6(2016):787-802.