Retzius I 80, 301.
Rietz II [63].
Ripley, W. I 300.
Röse II [49], [51], [63], [98], [234].
Rubin II [79].
Rüdin, E. I 228, 304; II [19], [176], [232].
Rütimeyer I 264.
Schallmayer, W. I 239, 304; II [32], [103], [107], [124], [142], [147], [162], [167], [178], [180], [181], [232].
Schemann, L. I 305.