Scaphiopodidae Cope, 1865
Scaphiopus (Spea) alexanderi
Scaphiopus (Scaphiopus) couchi
Scaphiopus couchii Baird, 1854
Scaphiopus (Spea) hammondi
Scaphiopus (Scaphiopus) holbrooki
Scaphiopus holbrookii (Harlan, 1835)
Scaphiopus (Scaphiopus) hurteri
Scaphiopus hurterii Strecker, 1910
Scaphiopus neuter
Scaphiopus (Scaphiopus) wardorum
Spea diversus
Spea pliobatrachus
Spea studeri
