(Table 2) Distribution of early Oligocene calcareous nannofossils in sediment...

V = very abundant; H = highly abundant; A = abundant; C = common; F = few; R = rare; fr = fragment; P = poor; M = moderate; G = good; E = etched; O = overgrown. Abundances in...各符号含义如下：V = 极丰富（very abundant）；H = 高度丰富（highly abundant）；A = 丰富（abundant）；C = 常见（common）；F = 少量（few）；fr = 碎片（fragment）；P = 较差（poor）；M = 中等（moderate）；G = 良好（good）；E = 蚀变（etched）；O = 过度覆盖（overgrown）。丰度相关内容详见……