Which of the following is a synapomorphy of the Gnathostomata? (Select all that apply.)

Cosmoid Scales
Cranium
Endochondral Bone
Four Limbs w/ Digits
Ganoid Scales
Heart w/ Divided Atrium
Jaws
Lingual Cartilage
Lobe Fins
Paired Fins
Placoid Scales (Dermal Denticles)
Tripartite Brain
Two Dorsal Fins
Ventral Lungs
Vertebral Elements
None of the above