Alim"ntary c"nal, position of vertebrate and invertebrate, [10]
Alim"ntary c"nal, possibility of formation of new, [58]
Alim"ntary c"nal, relationship between notochord and, [434]
Ammo"œtes, an ancestral type, [35], [309]
Ammo"œtes, alimentary canal, [168], [405], [445]
Ammo"œtes, auditory organ, [378], [379]
Ammo"œtes, brain, [39], [40], [41], [45], [46], [48], [54], [61]
Ammo"œtes, branchial appendages, [161], [162], [163], [164]
Ammo"œtes, bra"chial basket-work, [126], [128], [296], [331], [335]