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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Deuterostomia (deuterostomes)
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Craniata (craniates)
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Euteleostomi (bony vertebrates)
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Tetrapoda (tetrapods)
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Amniota (amniotes)
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Tyranni (New World flycatchers, cotingas, and manakins)
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Genus Euscarthmus
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Subspecies Euscarthmus rufomarginatus rufomarginatus
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Subspecies Euscarthmus rufomarginatus savannophilus
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Euscarthmus rufomarginatus
rufous-sided pygmy tyrant
(Also: rufous-sided pygmy-tyrant)