adj.適于行走的

But both the arboreal and the cursorial scenarios have explanatory gaps. 但是那兩個理論都有盲點。

As the idea that birds descended from dinosaurs gained acceptance by all but a few paleontologists, so too did the cursorial hypothesis. 鳥類從恐龍演化出來的想法，成為古生物學界的主流意見后，奔跑假說也成為主流。

cursorial birds 走禽類

cursorial insects 只走不飛的昆蟲

cursorial hypothesis 樹棲說