Cyphotrypa

• Cyphotrypa acervulosa
• Cyphotrypa alexandrae
• Cyphotrypa alternata
• Cyphotrypa americana
• Cyphotrypa antiqua
• Cyphotrypa bulbosa
• Cyphotrypa clarksvillensis
• Cyphotrypa columnaris
• Cyphotrypa corrugata
• Cyphotrypa corrugatiformis
• Cyphotrypa expanda
• Cyphotrypa explorata