Sphenosphaera

• Sphenosphaera bilineata
• Sphenosphaera centervillensis
• Sphenosphaera consimilis
• Sphenosphaera eiseni
• Sphenosphaera fiscellostriata
• Sphenosphaera kepinensis
• Sphenosphaera laurentina
• Sphenosphaera operta
• Sphenosphaera rogersensis
• Sphenosphaera similis
• Sphenosphaera subglobulus
• Sphenosphaera troostii