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EARLIEST CAMBRIAN MONOPLACOPHORA IN NORTHEASTERN YUNNAN WITH SOME NEW GENERA AND SPECIES
Author(s): 
Pages: 362-377,图版Ⅰ-图版Ⅱ
Year: Issue:  4
Journal: ACTA MICROPALAEONTOLOGICA SINICA

Keyword:  软体动物单板类新属新种梅树村阶早寒武世云南东北部;
Abstract: 本文描述了云南东部早寒武世早期梅树村阶软体动物单板类化石,计有5新属7新种和1个未定种,它们是Striatoconus yuluensis gen.Etsp.Nov.,Striatoconus sp.,Aegitellus concentricus gen.Et sp.Nov.,rubatoconus yulensis gen.Et sp.Nov.,Papilloconus explanatus gen.Et sp.Nov.,Masculuconus curvativus gen.Et sp.Nov.,Helcionella bellus sp.Nov.,gorella minuta sp.nov·.证明了早期软体动物单板纲已有较高的属种分异度,认为软体动物的最早祖先应该出现在前寒武纪.本文还提出了壳体形状、肌痕和显微结构可以作为鉴定单板纲的依据.
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