新疆柯坪中古生代无颌类及鱼类新知  

New findings of Middle Paleozoic Agnatha and Fishes from Kalpin,Xinjiang

作　　者：卢立伍[1] 潘江[1] 赵丽君 

机构地区：[1]中国地质博物馆,北京100034 [2]浙江自然博物馆,浙江杭州310012

出　　处：《地球学报》2007年第2期143-147,共5页Acta Geoscientica Sinica

基　　金：国家重点基础研究发展规划项目(2006CB806400)的资助

摘　　要：本文记述了新疆柯坪志留纪塔塔埃尔塔格组中发现的盔甲鱼类一新种,张氏南疆鱼Nanjiangaspis zhangi sp.nov.)和汉阳鱼类一未定种(Hanyangaspis sp.)。前者以横椭圆形的前中背孔,7对侧横管,2对背中管等特征归于南疆鱼属,并以瘤点状纹饰等特征区别于南疆鱼属型种;后者的前腹片特征和雪花状纹饰表明其归属于汉阳鱼类,在前腹片形状上与属型种稍有一些区别。文中还记述了一件发现于克兹尔塔格组的节甲鱼类化石(Arthrodira indet.)。Two new sorts of galeaspids, Nanjiangaspis zhangi sp. nov. and Hanyangaspis sp. , discovered in Silurian Tataertag Formation of Kalpin in northwestern Tarim Basin of Xinjiang, are described in this paper. The former is characteristized by transverse eclipse-shaped median dorsal opening, 7 pairs of transverse branches of lateral dorsal canals and 2 pairs of median dorsal commissures, and tuberculate ornaments, whereas the latter is similar to the type species in its anterior ventral plate and its tesserae ornament, but shows slight difference in the shape of its anterior ventral plate. Besides, an anterior ventral lateral plate belonging to Arthrodira is also reported in this paper, which is found in the Kezirtag Formation and represents the first report of arthrodire fishes in the Tarim basin.

关 键 词：塔里木 中古生代 无颌类 鱼类 

分 类 号：Q915.862[天文地球—古生物学与地层学]