音标与读法

这里为大家介绍下ostracod 是什么意思，希望能帮助到各位朋友。

中英文翻译

n.

介形亚纲 (Ostracoda) 动物。

tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell

同义词：seed shrimp, mussel shrimp,

例句与用法

1.The volcanic rock age and the age of the qiangtang formation determined the wudaoliang group between 20 - 5ma , discovering a flood of spore and pollen with ostracods fossils ( regard eucypris as principle ) , which are miocene epoches typical numerator , therefore wudaoliang group accumulate in miocene epoch is doubtless ; 9 - 2ma are the age of the suonahu formation based on the data of the esr , which were characteristic of later period in miocene epoch - pliocene epoch , spore and pollen with fossil all were miocene epoch period

由火山岩和覆于其上的羌塘组的年龄限定五道梁群的沉积时间为20 - 5ma ，五道梁群中发现大量的孢粉和介形虫化石(以eucypris为主) ，分析认为它们都是中新世时期的典型分子，因此五道梁群的沉积时间为中新世是无疑的；唢呐湖组的esr测年数据范围为9 - 2ma ，代表中新世晚期?上新世时期，孢粉和化石都具有中新世时期的特征。

单词网DAnCi.583316.cOm