Tip for noobs: first craft a Bola. Catch the pteranodon with the Bola. Gather meat.lure cnidarias/jellyfish to land. Knock the pteranodon unconcious wait for a little while while taming.then there ya go 1 pteranodon

BTW I have 3 of these I just need 4 more levels for pteranodon saddle good luck taming one! Don't forget the jellyfish that's an important part