Ambulocetus, for one, retained the flexible shoulder, elbow, wrist and finger joints of its terrestrial ancestors and had a pelvis capable of supporting its weight on land.

• 陆行鲸就是一个例子，牠仍然保存了陆栖祖先灵活的肩、肘、腕、指关节，以及在陆上用来支撑体重的骨盆。