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Protoglossus
Genus, Acorn worm (Hemichordata), Marine
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Balanoglossus
Genus, Acorn worm (Hemichordata), Marine
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Enteropneusta
Class, Acorn worm (Hemichordata), Marine
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Ptychoderidae
Family, Acorn worm (Hemichordata), Marine
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Mesoglossus pygmaeus
Species, Acorn worm (Hemichordata), Marine
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Rhabdopleuroidea
Order, Acorn worm (Hemichordata), Marine
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Harrimaniidae
Family, Acorn worm (Hemichordata), Marine
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Rhabdopleura compacta
Species, Acorn worm (Hemichordata), Marine
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Cephalodiscus levinseni
Species, Acorn worm (Hemichordata), Marine
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Hemichordata
Phylum, Acorn worm (Hemichordata), Marine
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Tornaria
Genus, Acorn worm (Hemichordata), Marine
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Stereobalanus canadensis
Species, Acorn worm (Hemichordata), Marine
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Glossobalanus minutus
Species, Acorn worm (Hemichordata), Marine
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Harrimania
Genus, Acorn worm (Hemichordata), Marine
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Saccoglossus horsti
Species, Acorn worm (Hemichordata), Marine
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Stereobalanus
Genus, Acorn worm (Hemichordata), Marine
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Glossobalanus
Genus, Acorn worm (Hemichordata), Marine
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Protoglossus koehleri
Species, Acorn worm (Hemichordata), Marine
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Cephalodiscoidea
Order, Acorn worm (Hemichordata), Marine
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Glossobalanus marginatus
Species, Acorn worm (Hemichordata), Marine