Rado G., 1968: Étude des Otolithes sarmatiens de Copacel-Chijic (Bassin du crisul repede). 5 pp.
 
AZC 3113
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.
 
ZME 81303
Randall J. E., Greenfield D. W., 2007: Redescription of Gnatholepis cauerensis (Bleeker, 1853), with discussion of the validity of the species. 6 pp. Zoologische Mededelingen Leiden 81: 303-308.
 
PSC 80
Ranzani-Paiva M. J. T., Ishikawa C. M., 1996: Haematological characteristics of freshwater-reared and wild mullet, Mugil platanus Günther (Osteichthyes, Mugilidae). 8 pp. Revta bras. Zool. 13(3): 561-568.
 
PSC 81
Ranzani-Paiva M. J. T., Ishikawa C. M., Campos B. E. S., Eiras A. C., 1997: Haematological characteristics associated with parasitism in mullets, Mugil platanus Günther, from the estuarine region of Cananéia, Sao Paulo, Brazil. 11 pp. Revta bras. Zool. 14(2): 329-339.
 
PSC 82
Ranzani-Paiva M. J. T., Tabata Y. A., Eiras A. C., 1998: Hematologia comparada entre diplóides e triplóides de truta arco-íris, Oncorhynchus mykiss Walbaum (Pisces, Salmonidae). 10 pp. Revta bras. Zool. 15(4): 1093-1102.
 
PSC 205
Rapp Py-Daniel, L. H., 1985: Dekeyseria amazonica, novo genero e nova espécie na regiao amazônica, Brasil, e Dekeyseria scaphirhyncha (Kner, 1854) nova combinaçao (Loricariidae: Siluriformes). 15 pp. Amazoniana 9(2): 177-191.
 
ZME 793137
Rasmussen P. C., 2005: Biogeographic and conservation implications of revised species limits and distributions of South Asian birds. 10 pp. Zoologische Mededelingen Leiden 79 (3): 137-146.
 
80574
Reddell J. R., Mitchell R. W., 1971: A checklist of the cave fauna of Mexico. II. Sierra de Guatemala, Tamaulipas. 35 pp.
 
AVE 185
Reichholf J., 1976: Faunistische Daten zur Vogelwelt der Stauseen am unteren Inn (2). 8 pp.
 
AVE 269
Reichholf J., 1977: Die Avifauna der zentralasiatischen Republiken der UdSSR: ornithogeographische Aspekte. 3 pp. Spixiana 1(2): 137-139.
 
SPX 01137
Reichholf J., 1977: Die Avifauna der zentralasiatischen Republiken der UdSSR: ornithogeographische Aspekte. 3 pp. [AVE 269] Spixiana 1(2): 137-139.
 
AVE 186
Reichholf J., 1978: Faunistische Daten zur Vogelwelt der Stauseen am unteren Inn (4). 10 pp.
 
SPX 02201
Reichholf J., 1979: Die Artabgrenzung im Tierreich, eine „Evolutionär Stabile Strategie” Spixiana 2: 201-
 
SPX 03193
Reichholf J., 1980: Jahreszeit- und Biotopabhängigkeit der Rudelbildung beim Rehwild (Capreolus capreolus L.). 16 pp. Spixiana 3(2): 193-208.
 
SPX 05061
Reichholf J., 1982: Höhe und Verteilung der Straßenmortalität von Hauskatzen (Felis sylvestris f. catus). 8 pp. [MAM236] Spixiana 5(1): 61-68.
 
SPX 06087
Reichholf J., 1983: Nehmen die Straßenverkehrsverluste Einfluß auf die Bestandsentwicklung des Igels (Erinaceus europaeus) 5 pp. Spixiana 6(1): 87-91.
 
PSC 141
Reichholf J., 1989: Die Fischfauna des unteren Inn: eine Übersicht. 4 pp.
 
AVE 43
Reinert B. L., Pinto J. C., Bornschein M. R., Pichorim M., Marini M. Á., 1996: Body masses and measurements of birds from Southern Atlantic Forest, Brazil. 6 pp. Revta bras. Zool. 13(4): 815-820.
 
80137
Reinig W. F., 1950: Chorologische Voraussetzungen für die Analyse von Formenkreisen. 33 pp.
 
MAM 47
Reis N. R., Peracchi A. L., Onuki M. K., 1993: Quirópteros de Londrina, Paraná, Brasil (Mammalia, Chiroptera). 11 pp. Revta bras. Zool. 10(3): 371-381.
 
AVE 187
Øepa P., 1979: Ptactvo samoty Rozcestí u Rozvadova v Èeském lese. 11 pp.
 
80880
Reteuna D., 1994: La migrazione degli accipitriformes, falconiforems e ciconiiforms attraverso le Valli di Lanzo. 27 pp.
 
80581
Retzer M. E., Page L. M., 1996: Systematics of the Stick Catfishes, Farlowella Eigenmann and Eigenmann (Pisces, Loricariidae). 54 pp.
 
AVE 44
Ribeiro M. G., Teles M. E. O., Maruch S. M. G., 1995: Morphological aspects of the ovary of Columba livia (Gmelin) (Columbidae, Columbiformes). 7 pp. Revta bras. Zool. 12(1): 151-157.
 
AVE 45
Ribeiro M. G., Teles M. E. O., Maruch S. M. G., 1997: Histologia e histoquímica do magno, um dos segmentos do oviduto de Numida meleagris (Linné) (Numididae, Galliformes). 8 pp. Revta bras. Zool. 14(1): 213-220.
 
80582
Rice D. W., Scheffer V. B., 1968: A list of the marine mammals of the World. 16 pp.
 
AVE 188
Richmond C. W., 1895: Description of a new species of Ant Thrush from Nicaragua. 2 pp.
 
AVE 189
Richmond C. W., 1895: Partial list of birds collected at Alta Mira, Mexico, by Mr. Frank B. Armstrong. 6 pp.
 
80882
Richmond C. W., 1896: Catalogue of a collection of birds made by Doctor W. L. Abbott in Eastern Turkestan, the Thian-Shan Mountains, and Tagdumbash Pamir, Central Asia, with notes on some of the species. 23 pp.
 
80883
Richmond C. W., 1897: Catalogue of a collection of birds made by Doctor W. L. Abbott in Madagascar, with descriptions of three new species. 18 pp.
 
AVE 190
Richmond C. W., 1900: Description of a new bird of the genus Dendrornis. 2 pp.
 
AVE 191
Richmond C. W., 1900: Descriptions of three new birds from Lower. 3 pp.
 
80885
Richmond C. W., 1903: Birds collected by Dr. W. L. Abbott and Mr. C. B. Kloss in the Andaman and Nicobar islands. 28 pp.
 
7068
Richmond C. W., 1917: Generic names applied to birds during the years 1906 to 1915, inclusive, with additions and corrections to Waterhouse’s “Index Generum Avium”. 72 pp.
 
PSC 142
Richter M., Breitkreuz C., 1997: Permian fish remains from the peine formation of northern Chile. 14 pp.
 
80888
Ridgway R., 1889: A review of the genus Sclerurus of Swainson. 11 pp.
 
80889
Ridgway R., 1889: A review of the genus Xiphocolaptes of Lesson. 20 pp. Proceedings of the United States National Museum for the year 1889. Volume XII.
 
AVE 192
Ridgway R., 1890: Observations on the Farallon rail (Porzana jamaicensis coturniculus Baird). 3 pp.
 
AVE 193
Ridgway R., 1896: Characters of a new American family of Passerine birds. 2 pp.
 
AVE 194
Ridgway R., 1896: Description of a new species of ground warbler from Eastern Mexico. 2 pp.
 
AVE 195
Ridgway R., 1896: Description of a new subspecies of the genus Peucedramus, Coues. 1 pp.
 
AVE 196
Ridgway R., 1896: Preliminary description of some new birds from the Galapagos Archipelago. 2 pp.
 
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.
 
AVE 197
Riley J. H., 1905: A new subspecies of ground dove from Mona Island, Porto Rico. 2 pp.
 
80892
Riley J. H., 1919: Annotated catalogue of a collection of birds made by Mr. Copley Amory, Jr., in northeastern Siberia. 20 pp.
 
80896
Riley J. H., 1930: Birds from the small islands off the Northeast Coast of Dutch Borneo. 24 pp.