- ↑ Lüling, K.-H. (1984) Auf der Suche nach der Krötenkopf-Schildkröte Phrynops geoffroanus hilarii., Herpetofauna 6 (31): 12-14
- ↑ Boulenger, G. A. (1888) Transverse bone of a Chelonian., Ann. Mag. nat. Hist. (6) 2: 122
- ↑ Boulenger, G.A. (1886) A synopsis of the reptiles and batrachians of the province Rio Grande do Sul, Brazil., Ann. Mag. nat. Hist. (5) 18: 423-445
- ↑ Gray, J. E. (1872) On Spatulemys Lasalae, a new genus of Hydraspidae from Rio Parana, Corrientes., Ann. Mag. nat. Hist. (4) 10: 463
- ↑ 5.0 5.1 Duméril, A.M.C., and G. Bibron. (1835) Erpétologie Générale ou Histoire Naturelle Complète des Reptiles, Vol. 2., Librairie Encyclopédique de Roret, Paris, 680 p.
- ↑ 6.0 6.1 Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- ↑ TIGR Reptile Database . Uetz P. , 2 Oktubre 2007