Table of Content

15 March 1992, Volume 30 Issue 01

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PAPPOCRICETODON, APRE-OLIGOCENE CRICETID GENUS (RODENTIA) FROM CENTRAL CHINA

Tong Yongsheng

1992, 30(01):  1-16. 

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Renewed interest in the early history of cricetids has developed within the past 15 years, but there is little evidence to support these studies. The systematic position of Simimys from the upper Eocene of North America has long been unsettled. Cricetodon schaubi, a unique Eocene cricetid definite, wag described by Zdansky (1930) only on the basis of -two lower molars. In that case, it is necessary to do further field work for discovery of new material. Fortunately, about two hundred isolated teeth assignable to a new genus were gathered in the Middle-Late Eocene deposits of the Yuanqu Basin by means of screenwashing recently. It seems that the new genus has a close relationship with the known Oligocene cricetids.

NEW MURID RODENTS FROM THE LATE CENOZOIC OF YUSHE BASIN, SHANXI

Wu Wenyu, Lawrence J. Flynn

1992, 30(01):  17-38. 

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As scientific collaborators' of the Chinrse-American joint project "Neogene Rocks and Faunas, Yushe Basin, Shanxi, PRC", the present authors, with William R. Downs; Northern Arizona University, sampled the Yushe microfauna in the fall of 1987 and 1988. The fossil remains were retrieved by surface collection and by wet-sieving bulk quantities of sediment. As one set of results from this project, following is a description of new taxa (one genus and five species) of murid rodents, including 164 specimens, of which most are isolated teeth. A more comprehensive report including all material collected will be published later. There has been little previous work on Yushe Muridae, with the notable exception of a paper on the murid Chardinomys yusheensis (Jacobs and Li, 1982) that bad been collected by an IVPP reconnaissance team in 1955 (our site YS57). This is the first time that substantial samples from many sites in Yushe Basin have been recovered from the Late Miocene to Pleistocene sequence of deposits. Herein we follow Storch (1987) on murid dental terminology. Specimens were measured (in mm) on a Wild M7A Stereomicroscope and photomicrographs were prepared with a Zeiss Digital Scanning Microscope 950 at 5KV under low magnification. The micromammal sites and murid biostratigraphy concerned are shown in fig. 1.

JURASSIC ORNITHOPOD AGILISAURUS LOUDERBACKI (ORNITHOPODA: FABROSAURIDAE) FROM ZIGONG, SICHUAN, CHINA

Peng Guangzhao

1992, 30(01):  39-53. 

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In 1983, Dong & Tang (1983) described material of two partial skeletons of an ornithopod collected from the dinosaurian bone quarry at Dashanpu, Zigong, Sichuan Province and coined the name Xiaosaurus dashazpensis. After that, He & Cai (1983, 1984) described two well-preserved skeletons of another ornithopod and denominated them as Yandusaurus multidens. In 1984 in the course of digging the foundation of the building of the Zigong Dinosaur Museum, a nearly complete skeleton of a small ornithopod was collected. It was briefly (lescribed by Peng (1990) and named as Agilisaurus louderbacki. Because this skeleton is So far among the most complete one known in China, or even in the world, it is significant in studying the evolution, paleobiogeography and functional morphology of the ornithopods, so a detailed study of it has been carried out.

ON TELEOSTEAN FOSSILS FROM NIEERKU FORMATION OF EASTERN LIAONING AND THE GENERIC STATUS OF LYCOPTERA LONGICEPHALUS

Su Dezao

1992, 30(01):  54-70. 

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This paper has emended the generic status of Lycopzera longicephalus found from Jiufotang Formation of western Liaoning and has also described osteoglossomorph fossils from Nieerku Formation of Sezihe Basin, eastern Liaoning. Although these fossils collected from the latter formation are unsatisfactorily preserved, they represent the first discovery in that region. It would be of great significance in •the studying of the biostratigraphy in Northeast China.

A NEW COBITID FROM THE MIDDLE MIOCENE OF SHANWANG, SHANDONG

Zhou Jiajian

1992, 30(01):  71-76. 

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A New species of Cobitidae, Cobitis longipectoralis sp. nov. from the Middle Miocene Shanwang basin is described in this paper. Cobizis is a relatively advanced genus in cobitinae. When the living species of the genus are widely distributed in Europe, Asia and Africa, the fossil ones are only found in the Tertiary of Europe and Asia. Two pharyngeal teeth ( ? Cobi tidae) were discovered from the Eocene of the coastal regions of the Bohai Gulf, China, but a definite fossil cobitid with complete skeleton is first recorded for China.

NEW DISCOVERY OF CLARKEOSTEUS IN CHINA

Wang Junqing

1992, 30(01):  77-82. 

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An arthrodira, Clarkeosteua yidadeinsis sp. nov., is described in this paper. It is the first time in China that Clarkeosteus was discovered. The materials are some incomplete plates which include an incomplete median dorsal, anterior dorsolateral, suborbital plates and an incomplete nuchal and paranuchal plates. They were collected from the upper Middle Devonian, Panxi region, Yunnan Province.