File:Lank.jpg

The long face of the lank means that its eyes are still above the level of the grass even when its snout is grazing at the grass roots. It can thus keep an eye open for danger. On the open plains danger can be seen coming from afar, and the lank's long legs give it the speed needed to escape from predators. It is difficult to believe that the lank's front legs are evolved from pterosaurs' wings. The fourth finger, that once supported the flight membrane, now carries the animal's weight and has a hoof on the end. The three small claws that once acted as a hand are now only used for grooming the animal's fine pycnofibres.