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Spirosperma
Genus, Annelid, Freshwater, terrestrial
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Stylaria
Genus, Annelid, Freshwater, marine, terrestrial
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Stylodrilus
Genus, Annelid, Freshwater, marine, terrestrial
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Theromyzon
Genus, Annelid, Freshwater, terrestrial
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Trocheta
Genus, Annelid, Freshwater, marine, terrestrial
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Troglochaetus
Genus, Annelid, Freshwater, marine, terrestrial
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Tubifex
Genus, Annelid, Freshwater, marine, terrestrial
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Vejdovskyella
Genus, Annelid, Freshwater, marine, terrestrial