(Table 3) Distribution of middle Eoecen-lowest Miocene calcareous nannofossil...

V = very abundand, A = abundant, C = common, F = few, R = rare, r = rare reworked specimens, F = few reworked specimens, - = absent. The high-latitude zonation of Wei and Wise...本数据集采用如下丰度分级标准：V = 极丰富（very abundand），A = 丰富（abundant），C = 常见（common），F = 少量（few），R = 罕见（rare），r = 再沉积型罕见标本（rare reworked specimens），另有F = 再沉积型少量标本（few reworked specimens），- = 缺失（absent）。Wei与Wise的高纬度分带方案……