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地质论评  2011 

贵州岑巩羊桥罗家塘杷榔动物群的发现及其后生动物早期演化的意义

Keywords: 杷榔动物群,杷榔组,寒武纪,罗家塘,岑巩羊桥,贵州

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Abstract:

岑巩县羊桥乡罗家塘杷榔组仅出露中―上部地层,岩性单一,均为青灰、灰绿色粉砂质泥、页岩。在其上部层位发现了俞氏贵州始海百合(GuizhoueocrinusyuiZhao,ParsleyetPeng,2007),计有棘皮动物始海百合、腕足动物、软体动物――软舌螺、节肢动物――三叶虫等8属9种,包括了2个未定名的新种和1未定种,与凯里市杷榔组的杷榔动物群相似。新的发现扩展了杷榔动物群的地理分布,提供了群落生态及埋藏学研究的新材料,具有重要的科学和实践意义。

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