Hedbergella delrioensis(Carsey, 1926)
 | Hedbergella delrioensis(Carsey, 1926)
 | Hedbergella delrioensis(Carsey, 1926)
 | Hedbergella delrioensis(Carsey, 1926)
 |
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Hedbergella delrioensis(Carsey, 1926)
 | Hedbergella delrioensis(Carsey, 1926)
 | Hedbergella delrioensis(Carsey, 1926)
 | Hedbergella delrioensis(Carsey, 1926)
 |
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Hedbergella delrioensis(Carsey, 1926)
 | Hedbergella delrioensis(Carsey, 1926)
 | Hedbergella delrioensis(Carsey, 1926)
 | Hedbergella delrioensis(Carsey, 1926)
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Heterohelix moremani(Cushman 1938)
 | Heterohelix moremani(Cushman 1938)
 | Heterohelix sp.---
 | Protoheterohelix sp.---
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Protoheterohelix washitensis(Tappan, 1940)
 | Protoheterohelix washitensis(Tappan, 1940)
 | Protoheterohelix washitensis(Tappan, 1940)
 | Protoheterohelix washitensis(Tappan, 1940)
 |
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Protoheterohelix washitensis(Tappan, 1940)
 |