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Ordning Sammanfattning for Syngnathiformes
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Huvudreferens |
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Ordning |
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Syngnathiformes pipefishes and seahorses |
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Klass |
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Teleostei |
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Systerordning |
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Synbranchiformes 15 M years |
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Ref. |
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Äldsta kända fossil |
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late Tertiary |
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Förekommer i |
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Marina |
Sötvatten |
Brackvatten |
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Kommentar |
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Body elongate and encased in a series of bony rings; mouth small, at end of tube-shaped snout (except in the "finless" pipefish Bulbonaricus, whose adults lack even a short tubiform snout); pelvic fins, when present, abdominal; upper jaw not protractile; lachrymal usually present, other circumorbital bones usually absent; ribs absent; anterior 3-6 vertebrae elongate; aglomerular kidney in at least some. |
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Klass Etymologi |
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Greek aktis = ray, thunderbolt, beam + Greek pterygion, diminutive of pteryx = wing, fin. Ref. 45335. |
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Ordning Etymologi |
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Greek, syn = with, together + Greek, gnathos = jaw + Latin, forma = shape (Ref. 45335). |
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Familjer |
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