Frog and Necturus

This picture shows the same frog from the posterior side.  Note the modified vertebral structures.

This picture shows the same frog from a lateral view.

This shows a disarticulated frog skeleton, showing the skull, vertebrae, and pelvic regions.  Note the specializations to the vertebrae and pelvis.

This picture shows the skull of Necturus

This picture shows the pectoral girdle of a mudpuppy

This pictures shows the pelvic girdle of a mudpuppy