There are two forms of locomotion in dinosaurs, there is bipedal and quadrupedal.
恐龙的运方式有两种,两
运
和
运
。
But many other scientists think there was something between a bipedal ancestor and the pterosaurs – something that was arboreal, and quadrupedal that hasn't been found in the fossil record yet So the evolution of pterosaurs is still foggy.
但许多其他科学家认为, 两物的祖先和翼龙之间存
某种东西——某种树栖
物,以及尚未
化石记录中发现的
物, 因此翼龙的进化仍然是迷雾重重。