[Junior]

Dumby. The anchor point of the tongue is the thing that moved to the back of the skull (as the illustrations provided to you show).

[Aquinasfan]

The anchor point of the tongue is the thing that moved to the back of the skull

I don't see how that helps to explain how the woodpecker's tongue came to wrap over and around its skull. The anchor point of the woodpecker's tongue is in the back of its mouth, like most other animal tongues.