Children (16 direct children, 16 direct and indirect children):
Nixonia watshami
Nixonia stygica
Nixonia sicaria
Nixonia priesneri
Nixonia pretiosa
Nixonia pecki
Nixonia lamorali
Nixonia krombeini
Nixonia gigas
Nixonia flavocincta
Nixonia elongata
Nixonia corrugata
Nixonia bini
Nixonia atra
Nixonia masneri
Nixonia mcgregori