4周搞定2000+托福核心词
[古生] 菊石
ammonoid
常考释义
Overall, about 38 percent of the families of marine animals were lost, with percentages much higher in some groups Ammonoid mollusks went from being very diverse and abundant to being extinct.
总的来说，大约38%的海洋生物消失了，更多的菊石软体动物也濒临灭绝。
来源于：阅读OFFICIAL33 P3n. 菊石类（已灭绝的海生头足类软体动物）【古生】
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