化石种 meaning in English

fossil species

The comparison of stomatal parameters in leaf cuticles between two fossil angiosperms from the pliocene in west yunnan and their nearest living equivalent species indicates a little higher atmospheric co2 level at that time than the present , while carbon isotopic composition of fossil cuticles demonstrates much higher carbon isotopic discrimination and slight lower water use efficiency , showing a warmer and wetter climate than today
摘要对滇西腾冲新近纪两种被子植物叶片及其现存对应种的气孔参数和碳同位素组成的综合分析表明：当时的大气co2浓度略高于现在水平；化石种的碳同位素分馏值高于现存对应种，但水分利用效率低于现存对应种；这证明当时的气候条件比当前更为温暖湿润。
The modem equivalents of the 14 species suggest that a subtropical evergreen broad - leaved forest was growing in the area surrounding mangdan during miocene , under warm and humid subtropical climate . 2 . numerous specimens of fruit and seed of ruppia were , for the first time , found from the zhangcun formation in the age of late pliocene ( 2 . 3 - 3 . 5 millions years old ) in yushe basin , shanxi , north china
山西省榆社盆地张村地区晚上新世( 2 . 3ma - 3 . 5ma )水生植物川蔓藻属( ruppia )果实和种子的大量发现及其与川蔓藻属2个化石种和5个现代种的比较表明，这些果实和种子属于一个新种?榆社川蔓藻只ruppiayushensissp . nov . 。