I wouldn't recommend taming one of these because they are very slow and don't have many uses. However, my tribe found that these can be useful for diving into the rivers on the center and collecting oil because you can breath from them. Their low health and damage can be an issue with the pirhanas though.
They are skittish but not anywhere near faster than humans. They have low torpor and health, so tranq darts are recommended. Tamed like any carnivore, kibble is Archeopteryx. Can be found anywhere in and around the swamps.