Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       Order [Columbiformes] Latham, 1790 - pigeons and allies
         Family Pteroclididae - sandgrouse see Family Pteroclidae Bonaparte, 1831
           Genus Pterocles Temminck, 1815
             Pterocles exustus Temminck, 1825 - chestnut-bellied sandgrouse
               1 Pterocles exustus exustus Temminck, 1825
               2 ‡Pterocles exustus floweri Nicoll, 1921
               3 Pterocles exustus ellioti Bogdanov, 1881
               4 Pterocles exustus olivascens (Hartert, 1909)
               5 Pterocles exustus erlangeri (Neumann, 1909)
               6 Pterocles exustus hindustan Meinertzhagen, 1923