Table of Content

15 September 2000, Volume 38 Issue 03

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LATE MESOZOIC AND TERTIARY ICHTHYOFAUNAS FROM CHINA AND SOME PUZZLING PATTERNS OF DISTRIBUTION

CHANG Mee-Mann, Chen Yi-Yu

2000, 38(03):  161-175. 

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The Recent freshwater ichthyofauna from the Japanese islands is, in many respects, different from that of eastern China. The Pliocene and Miocene ones from both areas, however, resemble each other in a greater extent in composition than the Recent ones. The Early Tertiary, i.e. Eocene fish fauna along the coast of the Bohai Gulf, east China shows striking similarity in composition to those of the same age along the west coast of North America demonstrating a "transpacific" distributional pattern. According to their composition and distribution the late Mesozoic, i. e. the Early Cretaceous freshwater ichthyofauna from China, can be subdivided into two distinct assemblages. The one from North China is endemic, while the one from southeastern China exhibits some affinities with the Early Cretaceous ichthyofaunas from northeastern South America and West Africa displaying a distributional pattern involving both northern and southern continents. Discussions on and tentative interpretations about the distributional patterns mentioned above are given in the text.

A NEW IGUANODONTIAN FROM SANGPING FORMATION OF NEIXIANG, HENAN AND ITS STRATIGRAPHICAL IMPLICATION

XU Xing, ZHAO Xi-Jin, LU Jun-Chang, HUANG Wang-Bo, LI Zhan-yang, DONG Zhi-Ming

2000, 38(03):  176-191. 

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In the spring of 1994，a partial iguanodonüan skeleton (reconstructed length about 4.5 m) was collected from the perley muddy siltstone of the Sangping Formation Of Maguan Basin, southeastem Henan Province, China. Thousands Of dinosaur eggs also have been discovered and collected at this site. This is the first dinosaur skeleton found in fris area. A new genus and species of Iguanodontia was erected and described based on this skeleton in this paper.

NEW RESULTS IN THE STUDY OF TERTIARY BIOSTRATIGRAPHY IN THE ULUNGUR RIVER REGION OF XINJIANG, CHINA

YE Jie, WU Wen-Yu, MENG Jin, BI Shun-Dong, WU Shao-Yuan

2000, 38(03):  192-202. 

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Stratigraphic sections of 4 Tertiary rock units in the Ulungur River region, northern rim of the Junggur Basin, Xinjiang, are briefly described. These are the Kekemaideng, Halamagai, Suosuoquan and Ulunguhe formations. The contact relationships and biochronology of theses rock units are discussed. The Kekemaideng beds are considered to be a formation of probably equivalent to middle Miocene Tunggur Fm. in age. The fauna from the Halamagai Fm. is correlative to early middle Miocene Tongxin fauna. The lower part of the Suosuoquan Fm. is younger than Tabenbulukian and probably of earliest Miocene. The Ulunguhe Fm. in its current usage is a mixture of sediments with different lithologies and different ages ranging from Cretaceous to Oligocene and should therefore be redefined.

A NEW SPECIES OF ACERORHINUS (PERISSODACTYLA, RHINOCEROTIDAE) FROM THE LATE MIOCENE IN FUGU, SHAANXI, CHINA

DENG Tao

2000, 38(03):  203-217. 

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Laogaochuan, the locality with rich chilothere fossils, is located about 60 to the northwest of Fugu County seat in Shaanxi Province. In this district, the Neogene strata located above the Mesozoic coal—bearing formation is 52m thick, all the which is underlying the loess. The Hipparion—fauna bearing chilothere fossils was collected from the lower and middle beds of the Neogene strata, with an age of 7.4— 5.3Ma B. P. based on paleomagnetic daüng, i. e. the late Late Miocene (MN12— 13) (Xue et al., 1995). A new species of Acerorhinus from this locality is described and discussed in this paper.

FOSSIL BUBALUS FROM SHAANXI, DIS TRIBUTION AND PHYLOGENY OF FOSSIL BUBALUS IN CHINA

XUE Xiang-Xu,Ll Xiao-Chen

2000, 38(03):  218-231. 

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Summary can be seen in PDF.

NEW MATERIAL OF ARTHRODIRA FROM UPPER DEVONIAN OF JIANGXI PROVINCE, CHINA

WANG Jun-Qing, WANG Nian-Zhong

2000, 38(03):  232-236. 

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A new genus and species of Arthrodira described in this paper was collected from the Upper Devonian of Chongyi, Jiangxi Province, China. The characters of the new genus and species includes the anterior division of the inferognathal toothed and equal to the posterior non-biting division of the inferogathal. The biting division with anterior and posterior dental fields, anterior dental field carrying a front "tooth" which lower than other biting division; the posterior dental field with a posterior row of five teeth on posterodorsal part of the biting division of the inferognathal that stands vertically. The edentulous area concave slightly. New genus and species, Gannanichthys chongyiensis gen. et sp. nov. is erected only by two plates: the inferognathal and anterior lateral plate. It is the first Arthrodira unearthed from Upper Devonian of Jiangxi Province. The Chongyi fossil has provided scientific basis for comparing the stratigraphy and studying paleogeography. The present genus and species is similar to Dinichthys, Dunkleosteus, Eastmansteus and Gorgonichthys in shape of inferognathal, but it differs from them in the smaller size, the front "tooth" lower than other biting division, the cusp of small denticles stands vertically and the edentulous area concave slightly, and in the tatters the anterior part of ventral margin of the biting division not protruding downward into a ventral process. The anterior lateral plate of the new material is very similar to Hardrosteus and Parabelosteus in shape, but the new material differs from them in the smaller size, and dorsal blade longer and ventral blade shorter. The material described is housed in the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP), Chinese Academy of Sciences.

A SKULL OF EMBOLOTHERIUM (PERISSODACTYLA, MAMMALIA) FROM ERDEN OBO, NEI MONGOL, CHINA

WANG Ban-Yue

2000, 38(03):  237-240. 

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A skull with lower jaw of Embolotherium andrewsi from late Eocene Ulan Gochu Formation, Erden Obo(=Urdyn Obo), Nei Mongol, China, is described. Its "battering ram" is formed the enlarged extended and raised nasals. Its nostrils are highly located at the antero-superior part of the nasals.