硬骨鱼纲
种系发生
系统进化关系的表示,通常显示为“树”(即。,branching diagram) where the most closely related organisms are connected by a node and more distantly related organisms have multiple steps back in the tree before they are connected. Nodes are often characterized by biogeographic events and evolutionary innovations. In fishes, jawless …(阅读更多…)