Table of Content

15 March 1993, Volume 31 Issue 01

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NEW JURASSIC GANOID FISHES FROM NORTHWESTERN GANSU, CHINA

Su Dezao

1993, 31(01):  1-14. 

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The specimens of ganoid fishes described here were collected from Mingshui, Gansu by some geologists of a local field party. All the 35 specimens came from lower subgroup of "Longfengshan Group" (Early Jurassic). Sixte n of them are assigned to a new species of Yuchoulepis, Y. gansuensis, of the ptycholepidae. The other nineteen are referred to a new genus and species, Plesiofuro mingshuica, of the Caturidae. Early Jurassic fishes were previously rarely found in China, this new discovery is of great significance to the study of the ichthyofauna of the period.

DERMAL OSSICLES OF TESTUDO FROM ULA USU, NEI MONGOL

Ye Xiangkui, Qi Tao

1993, 31(01):  15-18. 

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Some fragmentary bones of Testudo collected from Late Eocene (Shara Murun Formation) in Ula Usu area were briefly described in this paper. They include an anterior part of epiplastron, a proximal part of ilium, a foot with dermal ossicles and claw, three isolated claws, five dermal spurs of tail, a distal part of fibula and two broken bony pieces. The inner surface of anterior epiplastron thickens obviously and projects forward strongly. This is a typical character seen in Testudo. In China, a foot of Teszudo armed with dermal ossicles was reported before by C. W. Gilmore (1931), but the dermal spurs of the genus is the first occurrence this time. In view of the larger size of the bones, it seems reasonable to suppose that we have gotten a giant Testudo.

A NEW SORICOMORPH (MAMMALIA, INSECTIVORA) FROM THE EARLY EOCENE OF WUTU BASIN, SHANDONG CHINN)

Tong Yongsheng, Wang Jingwen

1993, 31(01):  19-32. 

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Wutu Basin is a small Paleogene sedimentary basin, situated about 17Okm east of Jinan, the capital of Shandong Province. An index fossil of Early Eocene, Homogalax wuzunensis, has been reported from the Wutu Formation by Chow and Li (1963, 1965). Recent collecting not only has produced extensive statistically-significant samples, but also has yielded uncommon specimens of micromammals. In this paper a soricomorph insectivoran is described. Soricomorpha Gregory, 1910 (Saban, 1954) Changlelestidae fame nov.

CYLINDRODONTIDAE (RODENTIA, MAMMALIA) FROM THE MIDDLE OLIGOCENE OF ULANTATAL, NEI MONGOL

Huang Xueshi

1993, 31(01):  33-43. 

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Summary can be seen in PDF.

ON A NEW SPECIES OF PLIOCENE URSUS (CARNIVORA: URSIDAE) FROM YINAN, SHANDONG PROVINCE

Li Yizheng

1993, 31(01):  44-60. 

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The present paper deals with a new species of Pliocene Ursus, on the basis of one skull with two associated mandibles and a single right mll ). The new, materials, excavated from the reddish brown breccia of a cave deposit in Yinan, Shandong, with a maximum thick— ness of 4.2m, turn out to represent the first reliable record of middle Pliocene Ursus ever found in China.

LATE CENOZOIC CROCODILIA FOSSILS FROM JIANGSU

Liu Guanbang, Chen Guikun

1993, 31(01):  61-64. 

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Some crocodilian fossils collected by the authors in recent years from late Cenozoic sediments of Jiangsu Province are described in the present notes. The materials are very fragmental, but at least three species and a problematic one are recognized in our collection, those being Tomistoma sp., Diplocynodon sp., Alligator cf. sinensis and Crocodilidae gen indet. It is, however, of interest because some of them are known to occur for the first time in China. They are briefly noted in the following: Tomistoma sp.: The presence of a large-sized and long-snouted crocodile is indicated in our collection by a fragment of the left maxillary with six alveolus and an isolated tooth. The maxillary is very large and long, its inside suture shows that it is joined with the nasal and the premaxillary, this is the characteristic of Tomiszoma. The size of the isolated tooth coincides entirely with the alveolus of the maxillary described above. Owing to few and broken materials, the species is undeterminable. Diplocynodon sp.: A dorsal scute suggests the presence of this genus. Its size and externally sculptured pit are very similar to that of Diplocynodon from Europe. Four isolated teeth referred to same genus are small and sharply conical, and comparable in size and morphological character to that of Diplocynodon gervaisi from Ronzon of France. It is also probable that these teeth represent other genus. Alligator cf. sinensis: This species is represented in our collection by a well preserved dorsal scute. Its size and externally netted sculpture resemble that of the living A. sinensis in the same area. This dorsal scute is found from cave deposit and coexisted with Ursus actors, Pseudaxis, Cervocerus and Felids. The geological age of this vertebrate assemblage is probably Middle Pleistocene. This is the earliest fossil record of A. sinensis. Crocodilidae gen. indet.: A fragment of the dorsal scute and three isolated teeth. The dorsal scute is very thick (6.3mm), the surface sculpture differs from Alligator sinensis and Diplocynodon mentioned above. Three teeth ar larger than that of Alligator sinensis, but smaller than that of Tomistoma described above. Because the materials are few, generic and specific determination are impossible.

A NEW THEROPODA (DILOPHOSAURUS SINENSIS SP. NOV.) FROM YUNNAN, CHINA

Hu Shaojin

1993, 31(01):  65-69. 

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In 1987, a team from the Kunming Muniipal Museum found and excavated a nearly complete specimen of a new species of theropod, Dilophosaurus sinensis, from Xiyang Village, Jinning County, Yunnan Province. The sp cimen was associated with a skeleton of Yunnanosaurus in the Lower Jurassic sediments of the Lower Lufeng Formation. The discovery of Dilophosaurus in China suggests there were close connections between North America and Asia during the Early Jurassic.

IN MEMORIAL TO BIRGER BOHLIN

1993, 31(01):  74-75. 

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