His Girlfriend's a T-Rex, My girlfriend is an Ankylosaurus, & I'm a shapeshifter

Transported to another world, Ben Tennyson, weirder of the Omnitrix and savior of the universe. Must survive this new world which happens to be filled with... get this... anthropomorphic dinosaurs.

And a lot of them have more than enough traits with humans, enough to appear like them. And oddly there's one who managed to catch Ben's eye, tall, armored and slightly stiff faced. But she has a kind heart.