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贵州剑河八郎“清虚洞组”为深水陆棚过渡相沉积,在其上部的剑河生物群中发现海绵动物化石,共6属6种,包括次圆柱形细丝海绵Leptomitus teretiusculus Chen,Hou and Lu,1989,小细丝海绵未定种Leptomitella sp.,密集鬃毛状海绵Saetaspongia densa Mehl and Reitner in Steiner et al.,1993,小斗篷海绵未定种Choiaella sp.,斗篷海绵未定种Choiasp.以及疑问原始海绵?Protospongiasp.,占整个生物群组成的6.98%,多为寒武纪第二世常见属种。本文主要描述前4属4种海绵动物。根据目前所采集到的海绵动物高度来看,多处于0—15cm范围内,其中0—5cm的海绵较多,5—15cm的海绵主要为Choiaellasp.。与皖南寒武系荷塘组和澄江生物群的海绵化石相比,“清虚洞组”的海绵动物总体个体较小,这种分层性可能与它们所处的环境背景和生态复杂性有关。
Guizhou Hachiroguchi “Qingxuendong Formation” is a transitional facies sedimentary system in the deep-water shelf. In its upper Jianhe biota, sponge fossils are found in 6 genera and 6 species including Leptomitus teretiusculus Chen , Hou and Lu, 1989, Leptomitella sp., Dense mane sponge Saetaspongia densa Mehl and Reitner in Steiner et al., 1993, Choiaella sp., Choiosp. And the original sponge? Protospongiasp., Accounting for 6.98% of the total biota, mostly common second-generation Cambrian genera. This article describes the first 4 genus 4 kinds of sponges. According to the current height of sponge collected from the point of view, mostly in the range of 0-15cm, of which 0-5cm more sponges, 5-15cm sponge mainly Choiaellasp .. Compared with the sponge fossils of Cambrian Hetang and Chengjiang biota in Southern Anhui Province, the overall population of sponges in the “Qingxudong Formation” is relatively small, which may be related to their environmental background and ecological complexity related.