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Information |
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Specimens |
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Scientific names for Aves taxonomy (family and below) are from The Howard and Moore Complete Checklist of the Birds of the World, Princeton University Press, copyright 2003. Used by permission.
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Order Cephalaspidea
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Family Acteocinidae -



Family Aglajidae -



Family Aplustridae -



Family Bullidae -



Family Bullinidae -



Family Cylichnidae -



Family Diaphanidae -



Family Gastropteridae -



Family Haminoeidae -



Family Hydatinidae -



Family Notodiaphanidae -



Family Philinidae -



Family Retusidae -



Family Ringiculidae -



Family Runcinidae

