| 1. | Fretter specialised in the study of prosobranch molluscs.
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| 2. | Furthermore, the Giant Tun is also a luminescent species; this is an extremely rare characteristic among the prosobranch gastropods.
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| 3. | When Neogastropoda was an order, it was placed within the prosobranch gastropods according to the taxonomy developed by Thiele ( 1921 ).
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| 4. | Nevertheless, a few of the older terms such as " opisthobranch " and " prosobranch " are still sometimes used in a descriptive way.
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| 5. | ""'Sierraia " "'is a genus of freshwater snails with an aquatic prosobranch gastropod mollusks in the family Bithyniidae.
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| 6. | ""'Pseudobithynia " "'is a genus of freshwater snails with an aquatic prosobranch gastropod mollusks in the family Bithyniidae.
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| 7. | ""'Bithynia leachii " "'is species of small freshwater snail with an aquatic prosobranch gastropod mollusk in the family Bithyniidae.
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| 8. | ""'Hydrobioides " "'is a genus of a freshwater snails with an aquatic prosobranch gastropod mollusks in the family Bithyniidae.
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| 9. | ""'Gabbia " "'is a genus of a freshwater snails with an aquatic prosobranch gastropod mollusks in the family Bithyniidae.
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| 10. | ""'Gabbiella balovalensis " "'is a species of small freshwater snails with an aquatic prosobranch gastropod mollusks in the family Bithyniidae.
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