现生微生物群落形态研究及其对解释埃迪卡拉生物群化石属性的启示

通过对常见微生物种类进行纯培养获得多种微生物菌落形态，并将其与埃迪卡拉生物群化石形态进行对比研究，发现：1）盘状化石Aspidella与圆盘形菌落的轮廓和放射状分布的小脊具有相似性；2）“rangeomorphs”分支状化石与具有次级分支结构的菌落具有某些相似性；3）五边形似棘皮动物化石Arkaruaadami与五边形菌落较为相似；4）两侧对称类化石Kimberella与圆盘形边缘具放射状脊的菌落的表面形态非常相似；5）盘状化石Az—bumaresbrunsae与圆盘形表面具辐射状脊的菌落的轮廓和表面纹饰分布极为相似。以上对比结果表明部分埃迪卡拉生物群化石与微生物菌落形态具有一定的相似性。本研究为埃迪卡拉生物群化石生物属性的解译提供了新思路。

RESEARCH ON MORPHOLOGY OF MODERN MICROBIAL COLONIES AND THE IMPLICATION FOR INTERPRETING THE AFFINITIES OF THE EDIACARA BIOTA

In this study,through continuous pure cultivation in laboratory,we obtained diverse forms of microbial colonies. The morphological comparison between fossils of Ediacara biota and modern microbial colonies reveals that (1) Aspidella shows similarities to disc-like microbial colonies in the body shape and the radial ridges on the surface; (2) the "rangeomorphs" shows similarity to microbial colonies with fractal-like branches structure in the branching structure; (3) Arkarua adami shows similarity to pentago...