Pyxis arachnoides BELL 1827
| On Colour and Colour-pattern Inheritance in Pigeons J Lewis Bonhote and F W Smalley (1911) Proceedings of The Zoological Society of London 1911: 601-626 | |
| Revision of the African tortoises and turtles of the suborder Cryptodira, by Arthur Loveridge and Ernest E. Williams A Loveridge (1957) Bulletin of The Museum of Comparative Zoology 115: 161-557 | |
| Revision of the African Tortoises and Turtles of the Suborder Cryptodira Arthur Loveridge and Ernest E Williams (1957) Bulletin of the Museum of Comparative Zoology 115: 163-557 | |
| A comparative study of the respiratory muscles in Chelonia R V Shah (1962) Breviora 161: 1-16 |