Literature
- Auffenberg, W., and J. B. Iverson. 1979. Demography of terrestrial turtles. In: M. Harless and H. Morlock (eds.), Turtles: Perspectives and Research, pp. 541-569. Wiley-Interscience, New York.
- Bell, T. 1827. On two new genera of land tortoises. Trans. Linn. Soc. London 15: 392-401.
- Bour, R. 1981a. Etude systématique du genre endémique Malgache Pyxis Bell, 1827. (Reptilia, Chelonii). Bull. Mens. Soc. Linn. Lyon. 50(4, 5): 132-144, 154-176.
- Durrell, B. Groombridge, S. Tonge, and Q. Bloxam. 1989. Pyxis arachnoides. Madagascar spider tortoise, Tsakafy, Kapila. In: I. R. Swingland, and M. W. Klemens (eds.). The Conservation Biology of Tortoises, pp. 103-104. Occ. Pap. IUCN/SSC 5, Tortoise and Freshwater Specialists Group. IUCN, Gland, Switzerland. .
- Gray, J. E. 1869a. Notes on the families and genera of tortoises (Testudinata), and on the characters afforded by the study of their skulls. Proc. Zool. Soc. London 1869: 165-225.
- Jesu, R., and G. Schimmenti 1996. A preliminary study of the status of a population of Malagasy spider tortoises (Pyxis arachnoides arachnoides Bell, 1826) from SW Madagascar. In: B. Devaux (ed.), Proceedings—International Congress of Chelonian Conservation, pp. 144-150. Gonfaron, France: Editions SOPTOM.
- Vuillemin, S. and C. Domergue. 1972. Contribution a l'étude de la faune de Madagascar: description de Pyxoides brygooi n. gen. n. sp. (Testudinidae). Ann. Univ. Madagascar. Ser. Sci. Natur. Math. (9): 193-200.
- Williams, E. E. 1950a. Variation and selection of the cervical central articulations of living turtles. Bull. Amer. Mus. Natur. Hist. 94: 505-562.