these bad bois can kill alpha raptor and carnos with ease cuz they won't aggro on u as long as u attack them from behind(specifically around their hind legs from above) so they won't see u and tbh i think almost any fliers can pull of this move but it's just that rhyniognatha has a very big advantage when killing medium alpha because of its mobility, damage, and most of all its ability to not get directly aggro on after a attack.