Table of Content

15 September 1992, Volume 30 Issue 03

Previous Issue    Next Issue

Two NEW EUGALEASPIDS, WITH A DISCUSSION ON EUGALEASPID PHYLOGENY

Zhu Min

1992, 30(03):  169-184. 

Asbtract ( )   PDF (1065KB) ( )  

Related Articles | Metrics

Two new Early Devonian eugaleaspids from Qujing, Yunnan in South China are described here. One is Nochelaspis maeandrine gen. et sp. nov., collected from the lower part of Xishancun Formation (early Early Devonian), the other Pterogonaspis yuhaii gen. et sp. nov. from Xujiachong Formation (late Early Devonian). Nochelaspis, the largest eugaleaspid so far described, is an element of the Early Vertebrate fauna in Xishancun Formation (Zhu, 1991), which includes polybranchiaspids, paleoniscoids, crossopterygian, arthrodire, antiarchs, petalichthyids (Zhu, dissertation; in preparation). Pterogonaspis, the huananaspid-like eugaleaspid, occurred in the same bed with Eugaleaspis xuiiachongensis, Sanchaspis magalarostra, yunnanolepids and plant remains. Both genera throw lights on the phylogeny of eugaleaspids and galeaspids. Eugaleaspids are assumed to be a monophyletic galeaspid group by (l) the eugaleaspid pattern lateral line system and (2) the longitudinal oval median dorsal opening (if the median dorsal opening of Nanpanaspis is due to the parallelism). By now, there have been 7 genera including 12 species of eugaleaspids described, ranging from Middle Silurian to Early Devonian (Fig. 3). The character analysis of eugaleaspids has been done in view of Cladistics. With the principle of parsimony, a new testable cladogram is established (Fig. 5).

EARLY DEVONIAN GALEASPID AGNATHA FROM SOUTHEAST OF YUNNAN, CHINA

Wang Junqing, Wang Nianzhong

1992, 30(03):  185-194. 

Asbtract ( )   PDF (1836KB) ( )  

Related Articles | Metrics

The specimens of Huananaspids described in this paper were collected from Gumu district, Southeast of Yunnan by Dr. Geng Baoyin, Institute of Botany, Academia Sinica. Their descriplion covers 2 new species, 2 new genera. Besides, one new Family of Huananaspiformes is proposed. Occurred in the same bed are some yunnanolepids and some scales of crossopterygians and some plants, all of the fossils shows that the age of Posongchong Formation is from upper Gredinian to lower Siegenian.

A NEW SPECIES OF THURSWS FROM WUDING, YUNNAN

Fan Junhang

1992, 30(03):  195-209. 

Asbtract ( )   PDF (895KB) ( )  

Related Articles | Metrics

A new osteolepidid crossopterigian, Thursius wudingenszs sp. nov., is described from the middle Devonian Haikou formation, Wuding, Yunnan, China. This is the first description of osteolepidid fish from China. The fossil materials were discovered in the quarry of Wuding cement factory in early 1960's. Several Placoderm forms from the same site were identified by Zhang Guorui (1965, 1980) as Dianolepis, Xichonolepis, and Bozhriolepis. Recently, more materials have been collected from the site. These and those collected years ago include most parts of the head of an osteolepidid fish. Since they are all cosmine covered, have the same color, similar thickness and size, it is natural to consider them as belonging to the same form. With reference to the description and plates of Scotland osteolepidid fish (Jarvik, 1948), these disarticulate dermal bones are recognized and reconstructed as an almost complete head. And a new species is set.

ON THE LOWER DEVONIAN ANTIARCHIANS OF GUANGXI, CHINA

Liu Shifan

1992, 30(03):  210-220. 

Asbtract ( )   PDF (820KB) ( )  

Related Articles | Metrics

Summary can be seen in PDF.

A SKULL OF ALTILAMBDA (MAMMALIA, PANTODONTA) FROM THE PALEOCENE OF QIANSHAN, ANHUI

Wang Yuanqing, Yu Benai, Li Dingsheng

1992, 30(03):  221-228. 

Asbtract ( )   PDF (1893KB) ( )  

Related Articles | Metrics

In January of 1989, a relatively well-preserved pantodont skull, described in this paper, was collected by the junior authors from the Middle Paleocene Wanghudun Formation near a small village in Yujing, Qianshan County, Anhui Province. This fossil represents a new form of pastoralodontid pantodonts.

A NEW SPECIES OF GIGANTAMYNODON FROM YUNNAN PROVINCE

Qi Tao

1992, 30(03):  229-232. 

Asbtract ( )   PDF (1100KB) ( )  

Related Articles | Metrics

Mr. Zhang Jiafa, a staff in the Cultural Museum of Maguan county, sent a piece of fossil mammalian maxilla with four cheek teeth (P3-M2) to IVPP in August of 1989. Having compared to other species of Gigantamynodon, I found that the specimen represented a new species in that genus. Its discovery locality is the south most one of the Paleogene mammalian localities of China. Apparently the specimen was collected from coal mine because it was surrounded by the coal. The age of the mammal is considered to be of Middle or Late Oligocene. It will be difficult for us to tell the further exact age because there is no other evidence.

VARIATION IN GEOGRAPHIC DISTRIBUTION OF MAMMALS IN PLEISTOCENE: EXPLANATION WITH ASTROCLIMATOLOGY

Xu Qinqi

1992, 30(03):  233-241. 

Asbtract ( )   PDF (971KB) ( )  

Related Articles | Metrics

Summary can be seen in PDF.

THE FOSSILS OF AILUROPODA FOUND IN FEIXIAN CAVE, XIANNING, HUBEI

Yuan Hong

1992, 30(03):  242-244. 

Asbtract ( )   PDF (980KB) ( )  

Related Articles | Metrics

This paper reports a skull and a lower jaw of Ailuropoda found in Feixian Cave, Xianning, Hubei Province. The fossils could be identified as Ailuropoda melanoleuca baconi Woodward, 1915, based on the comparison of the measurement of these specimens with that of the specimens found elsewhere. The geological age is tentatively considered to be Middle or Late Pleistocene.