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↑  מאמר המסביר את מקור השם גלאפגוס galapagos.to - This website is for sale! - galapagos Resources and Information., ww16.galapagos.to
↑  Ylenia Chiari, Chaz Hyseni, Tom H. Fritts, Scott Glaberman, Cruz Marquez, James P. Gibbs, Julien Claude, Adalgisa Caccone, Morphometrics Parallel Genetics in a Newly Discovered and Endangered Taxon of Galápagos Tortoise, PLoS ONE 4, 2009-07-17, עמ' e6272 doi: 10.1371/journal.pone.0006272
1 2 3  Darwin 1839, pp. 462–466
↑  Van Denburgh, J. (1914). "The gigantic land tortoises of the Galapagos archipelago". Proceedings of the California Academy of Sciences, Series 4 2 (1): 203–374. Retrieved 2012-01-11
1 2 3 4 5  De Vries, T.J. (1984). The giant tortoises: a natural history disturbed by man. Oxford: Pergamon Press. pp. 145–156. ISBN 0-08-027996-1
↑  MacFarland, Craig G.; Reeder, W.G. (1974). "Cleaning symbiosis involving Galápagos tortoises and two species of Darwin's finches". Zeitschrift für Tierpsychologie 34 (5): 464–483. doi:10.1111/j.1439-0310.1974.tb01816.x
↑  Bonin, Franck; Devaux, Bernard; Dupré, Alain (2006). Turtles of the world. Pritchard, Peter Charles Howard. Baltimore: Johns Hopkins University Press. ISBN 0-8018-8496-9
↑  Schafer, Susan F.; Krekorian, C. O'Neill (1983). "Agonistic behavior of the Galapagos tortoise, Geochelone elephantopus, with emphasis on its relationship to saddle-backed shell shape". Herpetologica 39 (4): 448–456. JSTOR 3892541
↑  DeSola, Ralph (1930). "The liebespiel of Testudo vandenburghi, a new name for the mid-Albemarle Island Galápagos tortoise". Copeia 1930 (3): 79–80. doi:10.2307/1437060. JSTOR 1437060
↑  Carpenter, Charles C. (1966). "Notes on the behavior and ecology of the Galapagos tortoise on Santa Cruz island". Proceedings of the Oklahoma Academy of Science 46: 28–32.
↑  Hayes, Floyd E.; Beaman, Kent R. Beaman; Hayes, William K.; Harris, Lester E. Jr. (1988). "Defensive behavior in the Galapagos tortoise (Geochelone elephantopus), with comments on the evolution of insular gigantism". Herpetologica 44 (1): 11–17. JSTOR 3892193
1 2  Swingland, I.R. (1989). Geochelone elephantopus. Galapagos giant tortoises. In: Swingland I.R. and Klemens M.W. (eds.) The conservation biology of tortoises. Occasional Papers of the IUCN Species Survival Commission (SSC), No. 5, pp. 24–28. Gland, Switzerland: IUCN. ISBN 2-88032-986-8
1 2  MacFarland, C.G. (1972). "Giant tortoises, goliaths of the Galapagos". National Geographic Magazine 142: 632–649
↑  MacFarland; Craig G.; Villa, José; Toro, Basilio (1974). "The Galápagos giant tortoises (Geochelone elephantopus). I. Status of the surviving populations". Biological Conservation 6 (2): 118–133. doi:10.1016/0006-3207(74)90024-X.
↑  Cioﬁ, Claudio; Swingland, Ian R. (1995). "Environmental sex determination in reptiles". Applied Animal Behaviour Science 51 (3): 251–265. doi:10.1016/S0168-1591(96)01108-2
↑  Cayot, L.J. (1994). Captive management and conservation of amphibians and reptiles. 11. Ithaca: Society for the Study of Amphibians and Reptiles. pp. 297–305. ISBN 0-916984-33-8
↑  "Galápagos tortoise Geochelone elephantophus". National Geographic Society. Retrieved 2012-01-12
↑  "Giant tortoises of the Galápagos". American Museum of Natural History. Retrieved 2012-01-12
↑  Chambers, Paul (2004). "The origin of Harriet". New Scientist (2464). Retrieved 2012-01-12. (subscription required)
↑  "Harriet the tortoise dies". ABC News Online. 2006-06-23. Archived from the original on 2006-06-24. Retrieved 2012-01-12
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