Table of Content

15 December 1997, Volume 35 Issue 04

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THE GENUS GAZELLA BLAINVILLE, 1816 (BOVIDAE, ARTIODACTYLA) FROM THE LATE NEOGENE OF YUSHE BASIN, SHANXI PROVINCE, CHINA

CHEN Guanfang

1997, 35(04):  233-249. 

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A NEW SPECIES OF APROTODON (PERISSODACTYLA, RHINOCEROTIDAE) FROM LANZHOU BASIN, GANSU, CHINA

QIU Zhanxiang, XIE Junyi

1997, 35(04):  250-267. 

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Aprotodon, a group of mid—Tertiary rhinoceroses with particularly wide symphyses, was previously known only from Pakistan and Kazakhstan. Its affinity has been little understood because of the paucity of the fossils available for study. The senior author of the present paper first mentioned its occurrence in the Lanzhou basin in 1990. In fact, its first finding was made early in 1986. In that year the junior author of the present paper collected some isolated teeth of this genus from Zhangjiaping, about 10km north of Lanzhou. Later in 1988 a well—preserved lower jaw with characteristic Aprotodon huge tusks was unearthed from a layer of thick white sandstone near the village Duitinggou, 10krn east of niangjiaping. Various specimens, including skull fragments and upper teeth attributable to Aprotodon, have been found in the Lanzhou basin since then. Now Aprotodon became the best represented genus among the large fossil mammals of the Lanzhou basin, and our knowledge of this genus is considerably augmented owing to these findings. The material to be studied below is important not only for the age determination of the Cenozoic deposits in the Lanzhou basin, but also for a better understanding of the genus Aprotodon.

FIRST DISCOVERY OF EOTITANOSUCHIAN ( THERAPSIDA, SYNAPSIDA) OF CHINA

LI Jinling, CHENG Zhengwu

1997, 35(04):  268-282. 

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Eotitanosuchia is a primitive suborder of Therapsida. Carroll (1989) included three families, Biannosuchidae, Eotitanosuchidae and Phthinosuchidae in this suborder, while Sigogneau—Russell (1989) assigned only one family Eotitanosuchidae including two genera and two species. Eotitanosuchus olsoni Chudinov, 1960 and Ivantosaurus ensifer Chudinov, 1983. The two genera come from the Upper Kazanian, Esheevo Locality, Ocher Province, Russia. A recently discovered incomplete skull and mandibles from Upper Permian Xidagou Fonnaüon, Dashankou Locality, Gansu are described here as the first eotitanosuchian outside Russia. Associated with this taxon are numerous therapsids, labyrinthodont amphibians and captorhinomorphs, of which a bolosaurid Belebey vegrandis, two dinocephalians Sinophoneous yumenensis and Stenocybus acidentatus have been reported (Li and Cheng, 1995; Cheng and Ji, 1996; Cheng and Li, 1997). The discovery of eotitanosuchian in China further proves close relationships between the mshankou Fauna and the Zone Il of Russia, and provides new material for discussing the phylogeny of early therapsids.

A NEW PHENACODONTID CONDYLARTH (MAMNIALIA) FROM THE EARLY EOCENE OF THE WUTU BASIN, SHANDONG

WANG Jingwen, TONG Yongsheng

1997, 35(04):  283-289. 

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This paper describes a new genus of Phenacodontidae, Lnphocion. Although phenacodontids are important elements from Torrejonian (M. Paleocene) through Wasatchian (Early Eocene) of North America, only a few specimens have been found in Europe, and difinite phenacodontid has never been recorded in Asia until the discovery of the Wutu specimens. The Ectocion—like upper cheek teeth were collected from the Wutu Formation in 1993, along with Mesodmops dawsonae (Multituberculata), Changlelestes dissetiformis (Insectivora), palaeanodonts, carpolesüd plesiadapoids (Beard and Wang, 1995), rodents (Tong and Dawson, 1995), hyoposodontid condylarths, creodonts, carnivores, tillodonts, and primitive perissodactyls.

EARLY TERTIARY MAMMALS OF XUANCHENG BASIN, ANHUI PROVINCE AND ITS IMPLICATION

HUANG Xueshi, ZHENG Jiajian

1997, 35(04):  290-306. 

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SILURIAN FISH FOSSIL FAUNA OF ANHUI AND JIANGSU PROVINCES, AND RELATED PROBLEMS

WANG Junqing

1997, 35(04):  307-311. 

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Some new material of Polybranchiaspiformes and Acanthodii was collected from Fentou Formation of Anhui and Jiangsu provinces. Based on the study of agnathans — gnathostomes including Hanyangaspis and Sinacanthus and so on, the Fentou Formation is considered as Llandovery in age. This view has been proved also by the newly discovered invertebrate fossils. Maoshan Formation was correlated with the upper part of Xiushan Formation in the past. Recently, the Xiushan Formation and Xiaoxiyu Formaüon was put in to the Lower Silurian by invertebrate workers. Because the Maoshan and Fentou formaüons are usually condnuous and conformably contacted, the Fentou Formaüon may correspond to Llandovery and Maoshan Formation to Wenlock.