Protogygia alberta

Protogygia arena

Protogygia biclavis

Protogygia comstocki

Protogygia elevata

Protogygia enalaga

Protogygia lagena

Protogygia milleri

Protogygia pallida

Protogygia polingi

Protogygia postera

Protogygia querula

Protogygia rufescens

Protogygia whitesandsensis