Range charts of stratigraphically important radiolarian species in sediments ...

The Paleogene sequences from three sites in the Caribbean were examined for radiolarians. In general, samples are highly lithified, requiring lengthy and repetitive cleaning...对加勒比海三个取样点位的古近纪（Paleogene）地层序列开展了放射虫（radiolarians）相关研究。总体而言，所有样品均已高度固结成岩，需经过耗时冗长且重复多次的清洗流程……