Table of Content

15 March 1995, Volume 33 Issue 01

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AN EARLY FOSSIL STURGEON (ACIPENSERIFORMES, PEIPIAOSTEIDAE) FROM FENGNING OF HEBEI, CHINA

Jin Fan, Tian Yanping, Yang Youshi, Deng Shaoying

1995, 33(01):  1-16. 

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During a field work on stratigraphy Mr. Yang Youshi et al., the geologists from •the Regional Geology and Mineral Resources Survey Institute of Hebei Province, discovered some well-preserved fossil sturgeons from the Yixian Formation in Fengning County, northern Hebei Province. These specimens, characterized by an extraordinarily long dorsal fin, represent a new form Yanosteus longidorsalis gen. et SP. nov. of the order Acipenseriformes. Yanosteus is stratigraphically concurrent with two known acipenseriform genera Peipiaosteus Liu et Zhou and Protopsephurus Lu in northern Hebei and western Liaoning. The fishbearing strata of Yixian Formation have long been thought to be Late Jurassic (Liu & Zhou 1965, Lu 1994), but additional evidence suggests an Early Cretaceous age (Li et al. 1994).

THE FIRST DISCOVERY OF BOLOSAURS FROM UPPER PERMIAN OF CHINA

Li Jinling, Cheng Zhengwu

1995, 33(01):  17-23. 

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The fossils forming the subject of the present study were collected from Da shankou, a Late Permian locality near Yumen, Gansu, which was first found by the last author in early 1980's. A trial excavation at this site proved that there exists a fossil-bearing lens containing some articulated skeletons on lower tetrapods and a huge number of isolated bones. Then, a project "Study of the Late Permian vertebrate fauna in Qilianshan and its paleobiogeography" was proposed and supported by the National Sciences Foundation in 1990. In the field seasons of 1991 and 1992 numerous amphibian and reptile remains including temnospondyls, dinocephalians, eotitanosuchians and bolosaurs were collected. The Yumen assemble is comparable to those of Zone II of Russia and Tapinocephalus zone of South Africa. A thorough preparation is still in progress and the following deals With bolosaur among the fauna. The stratum of the locality and detailed descriptions of the fauna will be given to appear seperately.

NEW LATE EARLY EOCENE CTENODACTYLOID RODENTS (RODENTIA, MAMMALIA) FROM DANJIANGKOU, HUBEI

Hu Yaoming

1995, 33(01):  24-38. 

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The close relatives of Ctenodactylidae were present early in Eocene of Asia. As basal members of early rodents, they are important for us to understand the early history of rodents. In the present paper a new genus and species, Hohomys lii, referred to Youmyidae, and a specimen of gen. indet., referred to Cocomyidae, are des. cribed. They were collected from Yuhuangding Formation near Wangjiazhai Village, Xijiadian Town, Danjiangkou City (formerly Junxian County), Hubei. The taxa of the vertebrate fauna associated with these two new ctenodactyloid rodents are Rhombomylus cf.turpanensis, R. SP., Advenimus hubeiensis, A. SP., cf. Heptondon sp., Asiocoryphodon conicus, Heterocoryphodon flerowi and Zhongvuanus sichuanensis etc., which suggest an age of late Early Eocene.

A NEW HYOPSODUS FROM THE EARLY EOCENE OF FANGXIAN, HUBEI

Huang Xueshi

1995, 33(01):  39-46. 

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Hyopsodus fangxianensis sp. nov. and Ctenodactyloidea fame, gen. and sp. indet. represented by fragmentary lower jaws are described in the present paper. The fossils were found near the village Luojiagou, 10 kilometers away northwest to FangXian city, where exposes a series of reddish-brown and purplish-red mudstone and siltstone with greyish-green sandstone or siltstone intercalations. Hyopsodus is the common animal in the Early and Middle Eocene of North America. Outside North America only in Asia it was found in the past decades (Dashzeveg, 1977; Zhai, 1978; Tong, 1989). Up to now only three species of Hyopsodus have been described from Asia, and all of them are represented by fragmentary unique specimens. So each specimen of this genus discovered in Asia is especially precious. The discovery of Hyopsodus in Fangxian not only further indicates the genus existing in Asia but- also enriches the genus composition and extends the distribution south to the Yangtze River valley.

THE ARAGONIAN VERTEBRATE FAUNA OF XIACAOWAN, JIANGSU 9. OCHOTONIDAE (LAGOMORPHA, MAMMALIA)

Wu Wenyu

1995, 33(01):  47-60. 

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A new species of Alloptox is described in this paper. All the material was ga thered from three localities (Songlinzhuang, Zhengji and Shuanggou) of Sihong County, Jiangsu Province. For detailed information on geological and stratigraphical background and others the reader is referred to Li et al. (1983) and Qiu and Lin (1986). Almost all here described 113 specimens (Songlinzhuang 68, Shuanggou 27, Zhengji 18) are isolated teeth with exception of three fragments of upper and lower jaws with few teeth. All specimens of these three localities are treated as members of one and the same population. However the measurements and figures of specimens from each locality are separately represented. The figures are represented as left ones, the abbreviated word "inv. is used under the figures of right teeth. All specimens are stored in IVPP under the inventory numbers V 8840—8842. The present paper is one of the series studies of Xiacaowan Fauna of Miocene from Sihong. In all previous papers the fauna was assigned to Middle Miocene. Qiu et al. (1990) adapted the boundry between early and middle Miocene to'; the European one. Therefore Xiacaowan fauna was reassigned to Early Miocene. I am very grateful to Prof. Wang Banyue for showing me the specimens of Sinolagomys cf. ulungurensis for comparison. Thanks are due to my colleagues: Profs. Wang Banyue, Tong Yongsheng, Qiu Zhuding and Zheng Shaohua who critically read the manuscript.

A NEW CRICETID FROM THE LUFENG HOMINOID LOCALITY, LATE MIOCENE OF CHINA

Qiu Zhuding

1995, 33(01):  61-73. 

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The locality Shihuiba at Lufeng, Yunnan produced abundant fossils of small mammals as well as rich remains of hominoids. Preliminary reports on the micromammalian fauna and the producing levels have been presented (Qiu et al., 1985; Qi, 1985), and detailed descriptions of selected taxa have been given in succession (Flynn & Qi, 1982; Qi, 1986; Qiu, 1986; Qiu, 1989; Qiu & Storch, 1990; Storch & Qiu, 1991). The present paper deals with the material of the rodent family Cricetidae collected in 1983 from layers of section D at the site. Cricetids are common rodents in this fauna, but represent only one genus and one species.

MAMMALIAN FOSSILS AND THE AGE OF XIAOCHANGLIANG PALEOLITHIC SITE OF YANGYUAN, HEBEI

Tang Yingjun, Li Yi Chen, Wanyong

1995, 33(01):  74-83. 

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The mammalian fossils described in this paper were collected at Xiaochangliang Paleolithic site from the Nihewan Formation, which composed of fluviolacustrine variegated clay, sandy clay, silt and sand with concretions of 97 meters in thickness. They were from same level in Nihewan Formation and are referred to the following forms: Allophaiomys cf. A. pliocaenicus, Mimomys chinensis, Hyaena licenti, Martes sp., Coelondonta antiquitatis, Palaeoloxodon sp., Equus sanmeniensis, Proboscidipparion sinense, Hipparion sp., Cervus sp., Gazella sp., Bovinae indet., etc. The fossil mammals listed above are among the typical Nihewan elements and the age of the fossil-bearing beds could be considered as Early Pleistocene. The preliminary result of paleomagnetic study of Xiaochangliang Paleolithic site suggests that the absolute age of the site is about 1.67 Ma B. P. , approaching the upper boundary of Olduvai Subchron.