澄江生物群斜针麦粒海绵异物同名研究  

The Homonymy of Triticispongia Diagonata from Chengjiang Biota

作　　者：张涛 严亚凤 陈远涛 刘奇 李蓉 陈爱林 ZHANG Tao;YAN Yafeng;CHEN Yuantao;LIU Qi;LI Rong;CHEN Ailin(Yuxi Normal University,Yuxi 653100,China;Nanjing Institute of Geology and Palaeontology,State Key Laboratory of Palaeobiology and Stratigraphy,Chinese Academy of Sciences,Nanjing 210008,China)

机构地区：[1]玉溪师范学院,云南玉溪653100 [2]中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室,江苏南京210008

出　　处：《玉溪师范学院学报》2023年第6期27-35,共9页Journal of Yuxi Normal University

基　　金：国家自然科学基金项目(项目编号:42262004,41662003);现代古生物学和地层学国家重点实验室(中国科学院南京地质古生物研究所)项目(项目编号:193104);玉溪师范学院大学生创新创业训练计划项目(项目编号:202011390016);德国访问项目FP7-PEOPLE-2009-IRSES(项目编号:“MarBioTec*EU-C”;246987)联合资助.

摘　　要：重新研究和描述澄江生物群被归入斜针麦粒海绵(Triticispongia diagonata)的材料.新材料证实澄江标本与产于三峡地区灯影组的斜针麦粒海绵并不是同一物种,而是异物同名,另建新属新种单轴针假麦粒海绵Pseudotriticispongia monaxialis gen.et sp.nov.新属种与灯影组材料之间的差别在于二者骨架组成不同:前者全由双尖针组成,后者除了单轴针以外,还有十字骨针和不确定的三轴针.它们分属不同的纲级分类单元.新属种增加了早古生代原始单轴针海绵的物种多样性,为研究该类海绵骨架的起源和演化提供了重要线索.Materials used to be classified as Triticispongia diagonata from the Chengjiang biota were re-studied and described.New materials with well-preserved spicules and skeletal structures confirm that the Chengjiang specimen is not the same species as Triticispongia diagonata found in the Dengying Formation in Three Gorges region,but different thing with the same name.Thus,we established a new genus and species,Pseudotriticispongia monaxialis gen.et sp.nov.,to include these materials from the Chengjiang biota.The new species differs from materials from the Dengying Formation in the skeletal composition:the former consists entirely of oxeas,while the latter includes monaxons,stauactins and possible triaxons,which belong to different taxa at the Class-level.The new genus increases the species diversity of Protomonaxonidae in the Early Paleozoic,and provides important clues for the study of the origin and evolution of this type of sponge skeleton.

关 键 词：寒武纪 澄江化石库 普通海绵 斜针麦粒海绵(Triticispongia diagonata) 

分 类 号：Q914.2[天文地球—古生物学与地层学]