The Principal Forms of the Skeleton and of the Teeth

angle animals answering appendage articular articulated attached backwards base become birds body bones bony broad called canal caudal cavity centrum character close coalesced common complete consists continued convex crocodile dentine developed digits distinct diverging divided dorsal edition elements expanded extends extremity fishes forwards four fourth frontal give hæmal arch hæmapophyses head human illustrations inner joints lateral length less limbs lower margin maxillary median middle modification molar names nasal nature neural arch neural spine occipital octavo organ ossified outer pair parietal perforated phalanges pieces plates pleurapophyses position posterior present proportion rays relation rest retain ribs scapula segment short side single skeleton skull slender species spine sternum structure surface tail teeth termed terminates thick third tion toes tooth transverse true trunk upper usually vertebræ vertical volume