Order Summary for Synbranchiformes
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Main Ref |
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Order |
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Synbranchiformes spiny eels |
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Class |
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Teleostei |
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Sister Order |
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Scorpaeniformes 15 M years |
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Ref. |
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First Fossil Record |
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late Tertiary |
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Occurs in |
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Marine |
Fresh |
Brackish |
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Remark |
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Body elongate; pelvic fins absent; gill openings confined to lower half of body; ectopterygoid enlarged; mesopterygoid reduced or absent; premaxillary nonprotrusible and without ascending process.
All species except three occur in freshwater. |
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Class etymology |
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Greek aktis = ray, thunderbolt, beam + Greek pterygion, diminutive of pteryx = wing, fin. Ref. 45335. |
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Order etymology |
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Greek, syn = together, adhesion + Greek, brangchia = gills + Latin, forma = shape (Ref. 45335). |
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Families |
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