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来自MSN
9 天
这不是压碎的奥利奥,是条鱼
也许在许多人看来,鱼都是一样的嘴脸,只有好吃和难吃的区别。然而,“鱼”这个字,(很不精确地)包含了脊椎动物里种类最多,历史最悠久的类群。如果把脊椎动物的演化史比作一棵大树,它的根基和大部分接近主干的树枝都被“鱼”所占据,而两栖动物、爬行动物、鸟以及哺 ...
Nature
9 天
Ichthyology articles from across Nature Portfolio
Ichthyology is the branch of zoology devoted to the study of fish, including: bony fish, Osteichthyes; cartilaginous fish, Chondrichthyes; and jawless fish, Agnatha. The discipline can include the ...
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