Hoi Diedert,
IOC geeft als commentaar bij Stone Partridge: "Ptilopachus partridges of Africa are more closely related to New World quails (Odontophoridae) and in turn to the guineafowl (Numididae) than to members of Phasianidae (Crowe et al. 2006; Crowe 2010; Cohen et al. 2012)."
Referenties:
Cohen C, JL Wakeling, TG Mandiwana-Neudani, E Sande, C Dranzoa, TM Crow & RCK Bowie. 2012. Phylogenetic affinities of evolutionarily enigmatic African galliforms: the Stone Partridge Ptilopachus petrosus and Nahan’s Francolin Francolinus nahani, and support for their sister relationship with New World quails. Ibis 154: 768–780.
Crowe T. 2010. Phylogenetic affinities of enigmatic African galliforms: the Stone Partridge Ptilopachus petrosus and Latham’s and Nahan’s ‘francolins’ Francolinus lathami and F. nahani. Cladistics 26: 206–206.
Crowe TM, RCK Bowie, P Bloomer, TG Mandiwana, TAJ Hedderson, E Randi, SL Pereira & J Wakeling. 2006. Phylogenetics, biogeography and classification of, and characteristic evolution in, gamebirds (Aves: Galliformes): effects of character exclusion, data partitioning and missing data. Cladistics 22: 495–532.