This conclusion provides evidence that radiolarian abundance and diversity are indicators for investigating sea-level changes.

煤山剖面放射虫动物群与海平面变化之间的这种耦合性为海平面变化的研究提供了依据。

The radiolarian cherts in the Wenbei region of Shaanxi Province are a formation of pelagic sediments formed within the North China Platform.

渭北奥陶系的放射虫燧石岩是在稳定的华北地台上形成的远洋沉积。

A protozoan of the phylum Rhizopoda, such as an amoeba or a radiolarian, characteristically moving and taking in food by means of pseudopods.

根足虫亚纲的一种原生动物，例如变形虫或放射虫目的根足虫，以通过伪足方式移动并摄取食物为特征。

There exists abundant radiolaria in the chert, and the radiolarian association suggests that the chert was formed in the last period of Late Jurassic.

硅质岩中含有大量放射虫，放射虫组合显示硅质岩的沉积时代为晚侏罗世晚期。

Research on radiolarians in China for samples from sea started in late 50' of the twentieth century, lagging behind the oversea radiolarian study for more than one century.

我国对取自海洋标本或样品的放射虫研究始于二十世纪50年代，比国际上整整晚了一个多世纪。