Incoming links: Tetrapod
Includes:
- sauropsida: reptiles and birds, which really are reptiles
- mammals, or if you want to include a bunch of extinct non-reptile mammal ancestors, synapsids.
Does not include amphibians. If you include them, you have the tetrapods.
Vertebrates minus tetrapods.
This paraphyletic subgroup is easy to form the "acquatic only" (fishes) vs "things that come out of water" (tetrapods). Though mudfish make that distinction harder.
Which kind of makes sense, why would you want for limbs unless you are going to stay out of water!