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Vertebrata Palasiatica ›› 2005, Vol. 43 ›› Issue (03): 165-174.

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A NEW GENUS OF EUGALEASPIDS (GALEASPIDA, AGNATHA) FROM THE SLURIAN OF ANJI, ZHEJIANG, CHINA

GAI ZhIkun, ZHU Min   

  • Online:2005-09-15 Published:2005-09-15

浙江安吉志留纪真盔甲鱼类一新属

盖志琨,  朱  敏   

Abstract: A new genus of the Eugaleaspiformes ( Galeaspida) , Anjiaspis is described in this paper. Fossil materials were discovered from the Maoshan Forrnation ( Wenlockian, Silurian) of Anji county, Zhejiang Province, China.

摘要: 记述了浙江安吉地区志留纪真盔甲鱼类一新属——安吉鱼(新属)(Anjiaspis gen.nov.)。新属的主要特征是:中背孔呈纵长的滴水形,前端稍尖,距离头甲吻缘较远,后端圆钝,明显位于两眶孔前缘连线之前;眶孔较小,位置十分靠近头甲中线,并距离头甲后缘较近,眶孔前区长于眶孔后区;松果孔大致位于两眶孔中心连线上;感觉管系统大致呈格栅状分布,可见4条纵行干管及联络它们的横行管,横行管由侧横管和中横联络管组成,其数目均比较多;鳃囊6对,纹饰为均匀分布的细小粒状瘤点。在此基础上运用分支系统学的方法对其系统位置进行