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When you are looking for specific items of interest, use the search tools; enter keywords in the basic search on the landing page or in the header, or the Search page where you can enter keywords and define search parameters.
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- Invertebrate Specimen206
- Phylum...
- Mollusca 206
- Class...
- Gastropoda 206
- Family...
- Polygyridae 206
- Genus...
- Mesodon 206
- Species...
- andrewsae 66
- thyroidus 42
- normalis 31
- zaletus 26
- inflectus 22
- clausus 8
- elevatus 4
- inflecta 2
- elevatus ? 1
- mitchelianus 1
- mitchellianus 1
- normalis? 1
- pennsylvanicus 1
Show More - State...
- Country...
- USA 138
- United States 6
- Phylum...
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