fusulins are index fossils used in permian stratigraphic correlation.
纺锤虫是用于二叠纪地层对比的标准化石。
the geologist identified multiple fusulin species in the thin section.
地质学家在薄片中识别出多种纺锤虫物种。
fusulin foraminifera thrived during the late paleozoic era.
纺锤虫类有孔虫在古生代晚期繁盛。
the fusulin test exhibits complex internal septation patterns.
纺锤虫壳体显示出复杂的内部隔壁模式。
researchers studied the fusulin biostratigraphy of the formation.
研究人员研究了地层的纺锤虫生物地层学。
the limestone contains abundant fusulin fossil remains.
石灰岩中含有丰富的纺锤虫化石遗骸。
fusulin zones help date sedimentary rock sequences accurately.
纺锤虫带有助于准确测定沉积岩层的年代。
spherical fusulin shells can reach several centimeters in size.
球形纺锤虫壳体可达数厘米大小。
the extinction of fusulins occurred at the permian-triassic boundary.
纺锤虫的灭绝发生在二叠纪-三叠纪边界。
microscopic examination revealed well-preserved fusulin specimens.
显微镜检查揭示了保存完好的纺锤虫标本。
the fusulin fauna indicates warm marine environments during the permian.
纺锤虫动物群表明二叠纪时期温暖的海洋环境。
geologists use fusulin distribution to correlate rock units regionally.
地质学家利用纺锤虫分布进行区域岩层对比。
the fusulin shell wall structure provides taxonomic information.
纺锤虫壳壁结构提供分类学信息。
fusulins are index fossils used in permian stratigraphic correlation.
纺锤虫是用于二叠纪地层对比的标准化石。
the geologist identified multiple fusulin species in the thin section.
地质学家在薄片中识别出多种纺锤虫物种。
fusulin foraminifera thrived during the late paleozoic era.
纺锤虫类有孔虫在古生代晚期繁盛。
the fusulin test exhibits complex internal septation patterns.
纺锤虫壳体显示出复杂的内部隔壁模式。
researchers studied the fusulin biostratigraphy of the formation.
研究人员研究了地层的纺锤虫生物地层学。
the limestone contains abundant fusulin fossil remains.
石灰岩中含有丰富的纺锤虫化石遗骸。
fusulin zones help date sedimentary rock sequences accurately.
纺锤虫带有助于准确测定沉积岩层的年代。
spherical fusulin shells can reach several centimeters in size.
球形纺锤虫壳体可达数厘米大小。
the extinction of fusulins occurred at the permian-triassic boundary.
纺锤虫的灭绝发生在二叠纪-三叠纪边界。
microscopic examination revealed well-preserved fusulin specimens.
显微镜检查揭示了保存完好的纺锤虫标本。
the fusulin fauna indicates warm marine environments during the permian.
纺锤虫动物群表明二叠纪时期温暖的海洋环境。
geologists use fusulin distribution to correlate rock units regionally.
地质学家利用纺锤虫分布进行区域岩层对比。
the fusulin shell wall structure provides taxonomic information.
纺锤虫壳壁结构提供分类学信息。
探索常用高频词汇