Children (21 direct children, 21 direct and indirect children):
Protogygia biclavis
Protogygia comstocki
Protogygia pectinata
Protogygia whitesandsensis
Protogygia querula
Protogygia polingi
Protogygia milleri
Protogygia lagena
Protogygia epipsilioides
Protogygia enalaga
Protogygia elevata
Protogygia terrifica
Protogygia demutabilis
Protogygia enlaga
Protogygia sp.
Protogygia alberta
Protogygia pallida
Protogygia postera
Protogygia rufescens
Protogygia album
Protogygia arena