- , Colantonio 1997
- Taxonomic revision of the South American subspecies of the turtle Kinosternon scorpioides. J. Herpetol. 31: 507-513.
- Caccone 1999
- Origin and evolutionary relationships of giant Galapagos tortoises. Proc. Nat. Acad. Sci. 96(23): 13223-13228.
- Cagle 1954b
- Observations on the life cycles of painted turtles (genus Chrysemys). Amer. Midl. Natur. 52: 225-235.
- Cagle 1950
- The life history of the slider turtle, Pseudemys scripta troostii (Holbrook). Ecol. Monogr. 20: 31-54.
- Cagle 1953b
- The status of the turtle Graptemys oculifera (Baur). Zoologica 38: 137-144.
- Cagle 1952b
- The status of the turtles Graptemys pulchra Baur and Graptemys barbouri Carr and Marchand, with notes on their natural history. Copeia 1952: 223-234.
- Cagle 1954a
- Two new species of the genus Graptemys. Tulane Stud. Zool. 1: 167-186.
- Cagle 1953a
- Two new subspecies of Graptemys pseudogeographica. Occ. Pap. Mus. Zool. Univ. Michigan (546): 1-17.
- Cagle 1952a
- A Louisiana terrapin population (Malaclemys). Copeia 1952: 74-76.
- Cahn 1937
- The turtles of Illinois. Illinois Biol. Monogr. 35: 1-218.
- , 1981
- Turtles in Kansas. AMS Publ., Lawrence, Kansas. 67 pp.
- Callard 1978
- The annual ovarian cycle of Chrysemys picta: correlated changes in plasma steroids and parameters of vitellogenesis. Gen. Comp. Endocrinol. 35: 245-257.
- Callard 1976
- Seasonal changes in testicular structure and function and the effects of gonadotropins in the freshwater turtle, Chrysemys picta. Gen. Comp. Endocrinol. 30: 347-356.
- Cann 1997c
- Irwin's turtle, Elseya irwini sp. nov. Vic. Herp. Soc. Inc. "Monitor" 9(1): 36-40.
- Cann 1997d
- Kuchlings long-neck turtle, Chelodina kuchlingi sp. nov. Vic. Herp. Soc. Inc. "Monitor" 9(1): 41-44.
- Cann 1997b
- The northern yellow-faced turtle, Emydura tanybaraga sp. nov. Vic. Herp. Soc. Inc. "Monitor" 9(1): 24-29, 34-35.
- Cann 1978
- Tortoises of Australia. Angus and Robertson, Publ., Sydney. 79 pp.
- Cann 1997a
- Georges short-neck turtle, Elseya georgesi sp. nov. Vic. Herp. Soc. Inc. "Monitor" 9(1): 18-23.
- Cann, Legler 1994
- The Mary River tortoise: a new genus and species of short-necked chelid from Queensland, Australia (Testudines, Pleurodira). Chelonian Conserv. Biol. 1: 81-96.
- Cansdale 1955
- Reptiles of West Africa. Penguin Books, London. 104 pp.
- Cantarelli, Herde 1989
- Projeto Quelônios da Amazônia 10 Anos. Republic of Brazil, Brasìlia. 119 pp.
- Caporaso 1991
- The Galapagos tortoise conservation program: the plight and future for the Pinzón Island tortoise. In: K. R. Beaman, F. Caporaso, S. McKeown, and M. D. Graff (eds.), Proceedings of the first International Symposium on Turtles & Tortoises: Conservation and Captive Husbandry, pp. 113-116. Chapman Univ., California.
- Cardosa de Lima 1997
- Diet of the turtle Phrynops rufipes in central Amazonia. Copeia
- , 1977
- Variation and evolution of stereotyped behavior in reptiles. In: C. Gans and D. W. Tinkle (eds.), Biology of the Reptilia, vol. 7, pp. 335-554. Academic Press, London.
- Carr 1982
- Surveys of sea turtle populations and habitats in the Western Atlantic. U. S. Dept. Comm., Nova Tech. Mem. NMFS-SEFC-91. 82 pp.
- Carr, Crenshaw 1957
- A taxonomic reappraisal of the turtle Pseudemys alabamensis Baur. Bull. Florida St. Mus. Biol. Sci. 2: 25-42.
- Carr, Giovannoli 1957
- The ecology and migrations of sea turtles, 2. Results of field work in Costa Rica, 1955. Amer. Mus. Novitates (1835): 1-32.
- Carr, 1959
- The ecology and migrations of sea turtles, 3: Dermochelys in Costa Rica. Amer. Mus. Novitates (1958): 1-29.
- Carr, 1960
- The ecology and migrations of sea turtles, 4. The green turtle in the Caribbean Sea. Bull. Amer. Mus. Natur. Hist. 121: 1-48.
- Carr, 1942
- A new turtle from the Chipola River, Florida. Proc. New England Zool. Club 20: 95-100.
- Carr, 1974
- Seafloor spreading theory and the odyssey of the green turtle. Nature 249: 128-130.
- Carr 1966
- The ecology and migrations of sea turtles, 6. The hawksbill turtle in the Caribbean Sea. Amer. Mus. Novitates (2248): 1-29.
- Carr 1952
- Handbook of turtles. The turtles of the United States, Canada, and Baja California. Cornell Univ. Press, Ithaca, New York. 542 pp.
- Carr 1937a
- A new turtle from Florida, with notes on Pseudemys floridana mobiliensis (Holbrook). Occ. Pap. Mus. Zool. Univ. Michigan (348): 1-7.
- Carr 1938b
- Notes on the Pseudemys scripta complex. Herpetologica 1: 131-135.
- Carr 1982
- Notes on the behavioral ecology of sea turtles. In: Bjorndal, K. A. (ed.). Biology and conservation of sea turtles, pp. 19-26. Smithsonian Institution Press, Washington, D.C.
- Carr 1967
- So excellent a fishe. A natural history of sea turtles. Natur. Hist. Press, Garden City, New York. 248 pp.
- Carr 1949
- The identity of Malacoclemmys kohnii Baur. Herpetologica 5: 9-10.
- Carr 1942b
- The status of Pseudemys floridana texana, with notes on parallelism in Pseudemys. Proc. New England Zool. Club 21: 69-76.
- Carr 1937b
- The status of Pseudemys scripta and Pseudemys troostii. Herpetologica 1: 75-77.
- Carr 1942a
- A new Pseudemys from Sonora, Mexico. Amer. Mus. Novitates (1181): 1-4.
- Carr 1938a
- A new subspecies of Pseudemys floridana, with notes on the floridana complex. Copeia 1938: 105-109.
- Carr 1938c
- Pseudemys nelsoni, a new turtle from Florida. Occ. Pap. Boston Soc. Natur. Hist. 8: 305-310.
- Carr 1978
- The ecology and migrations of sea turtles, 7. The West Caribbean green turtle colony. Bull. Amer. Mus. Natur. Hist. 162: 1-46.
- Carr 1980
- Apparent hibernation by the Atlantic loggerhead turtle Caretta caretta off Cape Canaveral, Florida. Biol. Conserv. 19: 7-14.
- Carr, Bickham 1986
- Phylogenetic implications of karyotype variation in the Batagurinae (Testudines: Emydidae). Genetica 70: 89-106.
- Carr, Bickham 1981
- Sex chromosomes of the Asian black pond turtle, Siebenrockiella crassicollis (Testudines: Emydidae). Cytogenet. Cell. Genet. 31: 178-183.
- Carr, 1988
- Natural history observations of Kinosternon herrerai (Testudines: Kinosternidae). Trianea (Act. Cient. Tecn. Inderena) 1: 87-97.
- Carr 1981
- The karyotype and chromosomal banding patterns of the Central American river turtle Dermatemys mawii. Herpetologica 37: 92-95.
- Carr 1986
- Dermochelys coriacea (leatherback sea turtle). Copulation. Herpetol. Rev. 17: 24-25.
- Castaño-Mora, Medem 1983
- Datos preliminares sobre la reproducción de Rhinoclemmys metanosterna Gray (Reptilia: Quelonia: Emydidae). Lozania (Acta Zool. Colombiana) (47): 1-5.
- Cayot, 1994
- Recent increase in killing of giant tortoises on Isabela Island. Noticias de Galápagos 54: 2-7.
- Cayot 1987
- Ecology of giant tortoises (Geochelone elephantopus) in the Galápagos Islands. PhD Dissertation, Syracuse University, Syracuse, New York. 409 pp.
- Cayot, Márquez 1994
- Informacion sobre las poblaciones de Galápagos en Isabela. Carta Informativa, Estacion Cientifica Charles Darwin 38: 3.
- Cayot, Morillo 1997
- Rearing and reintroduction of Galápagos tortoises: Geochelone elephantopus hoodensis, a case study. In: J. van Abbema (ed.), Proceedings: Conservation, Restoration, and Management of tortoises and turtles—An International Conference, pp 178-183. New York Turtle & Tortoise Soc., Purchase, New York.
- Cayot 1994
- Conservation biology of Galápagos reptiles: twenty-five years of successful research and management. In: J. B. Murphy, K. Adler, and J. T. Collins (eds.). Captive Management and Conservation of Amphibians and Reptiles, pp. 297-305. Society for the Study of Amphibians and Reptiles, Ithaca (New York). Contributions to Herpetology, vol. 11.
- Cei 1993
- Reptiles del noroeste, nordeste y este de la Argentina. Herpetofauna de las delvas subtropicales, Puna y Pampas. Museo Regionale di Scienze Naturali Torino, Monografia XIV. 949 pp.
- Chan-ard 1996
- Observations on Manouria impressa at Phu Luang Wildlife Sanctuary, northeastern Thailand, Chelonian Conserv. Biol. 2(1): 109-113.
- Chávez 1967
- Nota preliminar sobre la recaptura de ejemplares marcados de tortuga lora, Lepidochelys olivacea kempii. Bol. Prog. Nac. Marc. Tortugas Mar., Mexico 1(6): 1-5.
- Chávez 1968
- On the coast of Tamaulipas. II. Int. Turtle and Tortoise Soc. J. 2(5): 16-19, 27-34.
- Chessman 1986
- Diet of the Murray turtle, Emydura macquarii (Gray) (Testudines: Chelidae). Australian Wildl. Res. 13: 65-69.
- Chkhikvadze 1989a
- Neocene turtles of the USSR. Metshiereba, Tbilisi. 102 pp.
- Chkhikvadze 1988
- A taxonomic status of modern land tortoise of Middle Asia and Kazakhstan. Izv. Akad. Nauk. Gruz SSR, ser. Biol. 14: 110-114.
- Chkhikvadze 1987
- About the systematic position of the Far East tortoise Trionyx. Bull. Ac. Sci. Georgian SSR 128(3): 39-41.
- Chkhikvadze 1989b
- On the systematic place of fossil and Recent tortoises of the USSR. Abstract, First World Congress of Herpetology, Canterbury, Great Britain.
- Chkhikvadze, Tunijev 1986
- On the taxonomic status of modern land tortoise of the western Transcaucusus. Soobsch. Akad. Nauk. Gruz SSR. 124: 617-620.
- Chkhikvadze, Bakradze 1991
- On the systematic position of the Recent land turtle from the Araxes Valley. Works of Tbilsi St. Univ., in tribute to Iv. Dzhavakhishvili.
- Chkhikvadze 1990
- New subspecies of tortoise from southwestern Turkmenistan. Izv. Akad. Turkm. S.S.R. Ser. Biol. Nauk
- Choudhury 1993a
- New locality records for Kachuga sylhetensis (Jerdon, 1870). Hamadryad 18: 43-45.
- Choudhury 1995
- The Assam roofed turtle Kachuga sylhetensis in Sadiyappa new locality record. J. Bombay Nat. Hist Soc. 92: 426.
- Choudhury 1997
- Notes on the distribution and diet of Kachuga sylhetensis. Hamadryad 22: 61-62.
- Christens, Bider 1987
- Nesting activity and hatching success of the painted turtle (Chrysemys picta marginata) in southwestern Quebec. Herpetologica 43: 55-65.
- Christens, Bider 1986
- Reproductive ecology of the painted turtle (Chrysemys picta marginata) in southwestern Quebec. Can. J. Zool. 64: 914-920.
- , Dunham 1972
- Reproduction of the yellow mud turtle (Kinosternon flavescens flavescens) in New Mexico. Herpetologica 28: 130-137.
- , Moll 1973
- Latitudinal reproductive variation within a single subspecies of painted turtle, Chrysemys picta bellii. Herpetologica 29: 152-163.
- , Burken 1979
- Growth and maturity of the snapping turtle (Chelydra serpentina) in Iowa. Herpetologica 35: 261-266.
- Cintra, 1989
- Notes on the nesting ecology of Platemys macrocephala in the Brazilian Pantanal. Herpetol. Rev. 20(3): 65-66.
- , 1969
- Dietary shift in the turtle Pseudemys scripta (Schoepff) from youth to maturity. Copeia
- Clay 1981
- Observations on the breeding biology and behaviour of the long-necked tortoise, Chelodina oblonga. J. Roy. Soc. West. Australia 4: 27-32.
- Coker 1906
- The cultivation of the diamond-back terrapin. North Carolina Geol. Surv. Bull. 14: 1-69.
- Conant 1951b
- The red-bellied terrapin, Pseudemys rubriventris (LeConte), in Pennsylvania. Ann. Carnegie Mus. 32: 281-290.
- Conant 1951a
- The reptiles of Ohio. Univ. Notre Dame Press, Notre Dame, Indiana. 284 pp.
- Conant 1975
- A field guide to reptiles and amphibians of eastern and central North America. Houghton Mifflin, Boston. 429 pp.
- Conant, 1948
- A new subspecies of soft-shelled turtle from the Central United States, with comments on the application of the name Amyda. Occ. Pap. Mus. Zool. Univ. Michigan (510): 1-19.
- Conant, 1978
- Turtles of the family Kinosternidae in the southwestern United States and adjacent Mexico: identification and distribution. Amer. Mus. Novitates (2642): 1-18.
- Conant, 1991
- A field guide to reptiles and amphibians: Eastern and central North America. Houghton Mifflin Co., Boston. 450 pp.
- Congdon, Tinkle 1982
- Reproductive energetics of the painted turtle (Chrysemys picta). Herpetologica 38: 228-237.
- Congdon, 1987
- Morphological constraint on egg size: a challenge to optimal egg size theory? Proc. Natl. Acad. Sci. 84: 4145-4147.
- Congdon 1983b
- Nesting ecology and hatching success in the turtle, Emydoidea blandingi. Herpetologica 39: 417-429.
- Congdon 1987
- Reproduction and nesting ecology of snapping turtles (Chelydra serpentina) in southeastern Michigan. Herpetologica 43: 39-54.
- Congdon 1983a
- Parental investment in the chicken turtle (Deirochetys reticularia). Ecology 64: 419-425.
- Congello 1978
- Nesting and egg laying behavior in Terrapene carolina. Proc. Pennsylvania Acad. Sci. 52: 51-56.
- Cordero, 1998
- ¿Una nueva subespecie de E. orbicularis en la Península Ibérica? Results of a report to the Agriculture Department of the Galician Government, available on the University of Vigo web page (http://www.uvigo.es/webs/c04/webc04/acordero/emysubsp.html).
Paper presented at the 2nd International Symposium on Emys orbicularis, Blanc (Brenne-France), 25-27 June 1999.
- Cornalia 1849
- Vertebratorum synopsis in Museo Mediolanense Extantium: 301-315.
- , 1978
- Observations on the female reproductive cycle and associated phenomena in spring-dwelling populations of Sternotherus minor in North Florida (Reptilia: Testudines). Herpetologica 34: 20-33.
- Crenshaw 1965
- Serum protein variation in an interspecies hybrid swarm of turtles of the genus Pseudemys. Evolution 19: 1-15.
- Crews 1989
- Action of sex steroid hormones on temperature-induced sex determination in the snapping turtle (Chelydra serpentina). Gen. Comp. Endocrinol. 76: 159-166.
- Crumly 1988
- A nomenclatural history of tortoises (Family Testudinidae). Smithsonian Herpetol. Inform. Serv. 75: 1-17.
- Crumly 1994
- Phylogenetic systematics of North American tortoises (genus Gopherus): evidence for their classification. In: R. B. Bury and D. J. Germano (eds.), Biology of North American tortoises, pp. 7-32. U. S. Fish Wildl. Serv. Res. Report 13.
- Crumly 1982b
- The "parietal" foramen in turtles. J. Herpetol. 16: 317-320.
- Crumly 1984
- The cranial morphometry of Galápagos tortoises. Proc. California Acad. Sci. 43: 111-121.
- Crumly 1987
- The genus name for North American gopher tortoises. Proc. Desert Tortoise Council 1984: 147-148.
- Crumly 1982a
- A cladistic analysis of Geochelone using cranial osteology. J. Herpetol. 16: 215-234.
- Crumly 1985
- A hypothesis for the relationship of land tortoise genera (family Testudinidae). Stud. Geol. Salmaticensia Vol. Esp. 1. Stud. Palaeochelonol. [1984] 1: 115-124.
- Crumly, Grismer 1994
- Validity of the tortoise Xerobates lepidocephalus Ottley and Velázques in Baja California. In: R. B. Bury, and D. J. Germano (eds.), Biology of North American Tortoises, pp. 33-37. U. S. Fish Wildl. Serv. Res. Rep. 13.
- Da Cunha 1970
- Una nova subespécie de qualônio, Kinosternon scorpioides carajasensis da Serra dos Carajás, Pará. Bol. Mus. Paraense Emilio Geoldi (73): 1-11.