Kopeszki H., Schaller F., Christian E., 1987: Bodenzoologische Untersuchungen im Einflussbereich des Buchen-Stammablaufes. 7 pp. (in German). 

 Korelov M. N., 1953: Ptici soloncy. 3 pp. 

 Korth W. W., 1996: A new genus of beaver (Mammalia: Castoridae: Rodentia) from the Arikareean (Oligocene) of Montana and its bearing on castorid phylogeny. 13 pp. Annals of Carnegie Museum 65(2): 167-179.

 Korth W. W., 2000: Review of Miocene (Hemingfordian to Clarendonian) mylagaulid rodents (Mammalia) from Nebraska. 54 pp. Annals of Carnegie Museum 69(4): 227-280.

 Korth W. W., 2007: A new genus of beaver (Rodentia, Castoridae) from the Miocene (Clarendonian) of North America and systematics of the Castoroidinae based on comparative cranial anatomy. 18 pp. Annals of Carnegie Museum 76(2): 117-134.

 Korth W. W., 2011: New species of cricetid rodents (Mammalia) from the late miocene (Hemphillian) previously referred to Peromyscus pliocenicus Wilson. 11 pp. (in English). Annals of Carnegie Museum 79(2): 137-147.

 Korth W. W., 2011: Review of the species of Eumys Leidy, 1856 (Rodentiam Cricetidae) from the oligocene (Orellan to Arikareean) of North America. 12 pp. (in English). Annals of Carnegie Museum 79(2): 79-90.

 Korth W. W., 2013: Mylagaulid rodents (Mammalia: Rodentia: Mylagaulidae) from the middle Miocene (Barstovian) of New Mexico. 13 pp. (in English). Annals of Carnegie Museum 81(4): 233-245.

 Korth W. W., Bailey B. E., 2006: Earliest castoroidine beaver (Rodentia, Castoridae) from the late Arikareean (early Miocene) of Nebraska. 9 pp.  Annals of Carnegie Museum 75(4): 237-245.

 Korth W. W., Baskin J. A., 2009: A new species of Leptarctus (Carnivora, Mustelidae) from the late Clarendonian (Late miocene) of Kansas. 16 pp. Annals of Carnegie Museum 78(1): 29-44.

 Korth W. W., Branciforte C., 2007: Geomyoid rodents (Mammalia) from the ridgeview local fauna, early-early Arikareean (late Oligocene) of western Nebraska. 25 pp. Annals of Carnegie Museum 76(3): 177-201.

 Korth W. W., Diamond M. E., 2002: Review of Leptomeryx (Artiodactyla, Leptomeryicidae) from the Orellan (Oligocene) of Nebraska. 23 pp. Annals of Carnegie Museum 71(2): 107-129.

 Korth W. W., Emry R. J., 2007: A new genus of paramyine (Ischyromyidae, Rodentia) from the Eocene (Uintan to Chadronian) of Wyoming and Utah. 5 pp. Bull. Carn. Mus. Nat. Hist. 39: 151-155.

 Korth W. W., Evander R. L., 2016: Lipotyphla, Chiroptera, Lagomorpha, and Rodentia (Mammalia) from Observation Quarry, earliest Barstovian (Miocene), Dawes County, Nebraska. 36 pp. Annals of Carnegie Museum 83(3): 219-254.

 Korth W. W., Martin J. E., 2007: Additional cranial material of the Miocene beaver Anchitheriomys (Rodentia, Castoridae) from Nebraska. 7 pp. Bull. Carn. Mus. Nat. Hist. 39: 165-171.

 Korth W. W., Samuels J. X., 2015: New rodent material from the John Day Formation (Arikareean, middle Oligocene to early Miocene) of Oregon. 66 pp. Annals of Carnegie Museum 83(1): 19-84.

 Korth W. W., Tabrum A. R., 2011: A new aplodontoid rodent (Mammalia) from the early Oligocene (Orellan) of Montana and a suggested origin for the family Mylagaulidae. 15 pp. Annals of Carnegie Museum 80(1): 67-81.

 Koshiyama Y., Watanabe H., Hirata T., 2012: Record of Anthracophora rusticola (Coleoptera: Scarabaeidae) adults in a breeding nest of the Mountain hawk-eagle Spizaetus nipalensis (Falconiformes: Accipitridae). 3 pp. Japanese Journal of Entomology (N. S.)15(3): 172-174.

 Koshovskij A. A., 1991: Sravnitelnaya morfologiya krovenosnoj sistemy nekotorykh ryb podotryada Scombroidei. 6 pp. Vestnik Zool. 1991(2): 57-62.

 Kostin I. A., 1953: Jadovitye svojstva ryb marinok. 22 pp. 

 Kottelat M., 1989: On the validity of Phractocephalus Agassiz, 1829, vs. Pirarara Agassiz, 1829 (Osteichthyes: Pimelodidae). 1 pp. Spixiana 12(3): 321.

 Kottelat M., Chu X.-L., 1987: Two new species of Rasbora Bleeker, 1860 from southern Yunnan and northern Thailand (Osteichthyes, Cyprinidae). 6 pp. Spixiana 10(3): 313-318.

 Kottelat M., Géry J., 1989: Nemacheilus troglocataractus, a new blind cavefish from Thailand. 5 pp. Spixiana 11(3): 273-277.

 Kottelat M., Pethiyagoda R., 1989: Schismatogobius deraniyagalai, a new goby from Sri Lanka: description and field observations (Osteichthyes, Gobiidae). 6 pp. Spixiana 12(3): 315-320.

 Kottelat, 1994: Rediscovery of Sewellia lineolata in Annam, Viet Nam (Teleostei: Balitoridae). 4 pp. [PSC 227] Zoologische Mededelingen 68(11): 109-112.

 Kováč V., 1996: Early development of hybrid Gymnocephalus baloni x Gymnocephalus schraetser. 17 pp. [80081] Acta Universitas Carolinae, biol. 39(1995)(3-4): 173-189.

 Kováts L., 1968: Beiträge zur Kenntnis der Verbreitung des Prachttauchers-Gavia Arctica (L) – in Rumänien. 18 pp. 

 Kovshar A. F., Gubin B. M., 1991: Pustynnaya slavka v Kazakhstane: rasprostranenie, razmeshtshenie, gnezdostroenie. 6 pp. Vestnik Zool. 1991(1): 50-55.

 Kowalski K., 1958: Plejstocenskie Microtinae (Rodentia, Mammalia) z jaskini w Dziadowej Skale. 19 pp. Acta zoologica cracoviensia 2/32: 807-823.

 Kowalski K., 1960: Cricetidae I Microtidae (Rodentia) z pliocenu Wezów (Polska). 50 pp. Acta zoologica cracoviensia 5/11: 447-504.

 Kowalski K., 1960: Pliocenski owadozerne I gryzonie z Rebielic Królewskich (Polska). 44 pp. Acta zoologica cracoviensia 5/5: 155-200.

 Kowalski K., 1968: New data on the distribution of Mammals in the Mongolian People’s Republic. 14 pp. Acta zoologica cracoviensia 13/1: 1-11.

 Kowalski K., 1979: Fossil Zapodidae (Rodentia, Mammalia) from th Pliocene and Quaternary of Poland. 14 pp. Acta zoologica cracoviensia 23/9: 199-210.

 Kowalski K., 1995: Lemmings (Mammalia, Rodentia) as indicators of temperature and humidity in the European Quaternary. 10 pp. [MAM 139] Acta zoologica cracoviensia 38(1): 85-94.

 Kozlova E. V., 1957: Aves: Charadriiformes: Alcae: Alcidae. Fauna SSSR. Tom II, vyp. 3. 144 pp. (in Russian).  Discount 50%!

 Kozlova, Tugarinov, 1947: Aves: Colymbiformes, Procellariiformes, Pelecaniformes, Ciconiiformes, Phoenicopteriformes. Fauna SSSR. 320 pp.  Discount 50%!

 Kožuch O., Lysý J., Nosek J., 1989: Výsledky vyšetrenia kliešťov a drobných cicavcov na prítomnosť vírusu kliešťovej encefalitídy. 6 pp. Entomological Problems 19: 371-376.

 Kraft R., 1982: Notes on the type specimens of Artibeus jamaicensis planirostris (Spix, 1823) (Mammalia, Chiroptera, Phyllostomidae). 6 pp. Spixiana 5(3): 311-316.

 Kraft R., 2000: Ehemalige und aktuelle Verbreitung von Hausspitzmaus, Crocidura russula (Hermann, 1780), und Gartenspitzmaus, Crocidura suaveolens (Pallas, 1811), in Bayern. 15 pp. Bonner zoologische Beiträge 49(1-4): 115-129.

 Kratochvíl J., 1987: Atlas hnízdního rozšíření ptáků v Čssr 1973/77. 483 pp 

 Kratochvíl J., Bartoš E., 1954: Soustava a jména živočichů. 544 pp.  Discount 50%!

 Krause P., Böhme W., 2010: A new chameleon of the Trioceros bitaeniatus complex from Mt. Hanang, Tanzania, east Africa (Squamata: Chamaeleonidae). 11 pp. Bonn zoological Bulletin 57(1): 19-29.

 Krause T., 2002: Neue Beobachtungen zur Verbreitung von Rät und Lias in der Apfelstädt-Aue zwischen Wechmar und Wandersleben (Thüringer Mulde). 8 pp. [MAM 68] Veröffentlichungen des Naturkundemuseum Erfurt 21: 55-62.

 Kreissl E., Madler J., 1994: Eingänge von Säugetieren für die Sammlung der Abteilung für Zoologie des Steiermärkischen Landesmuseums Joanneum in den Jahren 1985 und 1986 (Mammalia). 8 pp. 

 Krell F. T., 1993: Taxonomie auf der Grundlage der Evolutionsbiologie. 7 pp. 

 Krištín A., 1994: Vtáctvo ŠPR Kláštorské lúky v CHN Turiec. 6 pp. 

 Krogh A., : Ethyl urethane as a narcotic for aquatic animals. 6 pp. (in English). 

 Krupp F., 1983: Freshwater fishes of Saudi Arabia and adjacent regions of the Arabian Peninsula. 69 pp. Fauna of Saudi Arabia 5: 568-636.

 Krupp F., Paulus T., 1991: First record of the coral-reef fish Pseudanthias fasciatus (Kamohara, 1954) from the Red Sea (Perciformes: Serranidae). 5 pp. Fauna of Saudi Arabia 12: 388-392.

 Krupp F., Schneider W., 1989: The fishes of the Jordan River Drainage Basin and Azraq Oaisis. 70 pp. Fauna of Saudi Arabia 10: 347-416.