Ratitae, [109];

coracoid and scapula fused, [8];

incisura ischiadica, [9];

meaning of name, [7];

no pygostyle, [6] n.;

structure, [26];

a subdivision of Neornithes, [23] f.

Rattlewing, [121]

Raven, [554], [555], [555], [556]

Razorbill, [316], [317], [320] f.