Although Stuart and Parham (2004) argued that it was quite distinct, possibly enough to justify its elevation to a full species, ostelogic studies by Fritz et al. (2006) have shown that it probably better remains as a subspecies of C. galbinifrons. This is further substantiated by the finding of intergradation zones in north-centralvietnam, where hybrid populations of C. g. galbinifrons and C. g. bourreti are known to exist (Fritz et al. 2003).
Fritz, Uwe, Antje Petzold and Markus Auer. 2006. Osteology in the Cuora galbinifrons complex suggests conspecifity of C. bourreti and C. galbinifrons, with notes on shell osteology and phalangeal formulae within the Geoemydidae. Amphibia- Reptilia. 27 (2): 195-205.
Fritz, U., Ziegler, T., Herrmann, H.-W., Lehr, E., 2002. Intergradation between subspecies of Cuora galbinifrons Bourret, 1939 and Pyxidea mouhotii (Gray, 1862) in southern North Vietnam. Faun. Abh. Mus. Tierk. Dresden, 23: 59-74.
Obst, F.J., Reimann, M., 1994. Bemerkenswerte Variabilität bei Cuora galbinifrons Bourret, 1939, mit Beschreibung einer neuen geographischen Unterart: Cuora galbinifrons bourreti subsp. nov. Zool. Abh. Mus. Tierk. Dresden, 48: 125-138.