Rage J. C., 1988: The oldest known colubrid snakes. The state of the art. 18 pp. [80879] Acta zoologica cracoviensia
 
SPX 36143
Rakotoarison A., Köhler J., Glaw F., Vences M., 2013: The advertisement call of the relict frog Tsingymantis antitra from Madagascar (Anura, Mantellidae). 6 pp. Spixiana 36(1): 143-148.
 
81253
Riff D., Kellner A. W. A., 2001: On the dentition of Baurusuchus pachecoi price (Crocodyliformes, Metasuchia) from the upper cretaceous of Brazil. 15 pp. (in English). Boletim do Museu Nacional (N.S.) Geologia 59: 1-15.
 
AZC 3119
Roček Z., 1988: List of fossil amphibians of Czechoslovakia. 28 pp. [80592] Acta zoologica cracoviensia