Children (12 direct children, 12 direct and indirect children):
Xyalaspis subulifera
Xyalaspis petiolata
Xyalaspis armata
Xyalaspis laevigata
Xyalaspis spinigera
Xyalaspis pilosa
Xyalaspis hirsuta
Xyalaspis arapahoe
Xyalaspis alveolata
Xyalaspis aberrans
Xyalaspis dominicana
Xyalaspis muzencaba