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Sagaruimsed

Allikas: Vikipeedia

Sagaruimsed
Fossiilide leiud: hilis-silur – retsentne
Latimeeria (Latimeria chalumnae)

Latimeeria (Latimeria chalumnae)
Taksonoomia
Riik Loomad Animalia
Hõimkond Keelikloomad Chordata
Alamhõimkond Selgroogsed Vertebrata
Infrahõimkond Lõugsuused Gnathostomata
Ülemklass Luukalad Osteichthyes
Klass Sagaruimsed Sarcopterygii
Alamklassid

Sagaruimsed (ka lihasuimsed; teaduslik ladinakeelne nimetus Sarcopterygii) on luukalade ülemklassi kuuluv ürgne kalade klass, mis hõlmab kopskalu ja vihtuimelisi (latimeeria).

Iseloomustus

Sagaruimsete keha keskne toes on luustumata seljakeelik. Nende paarisuimed kinnituvad tugevatele keha seest väljaulatuvatele pikkadele luudele. Sagaruimsete soomused on kosmoidsed. Vanapärastest tunnustest on sagaruimsetel säilinud veel südames arteriooskuhik ja sooles keeritskurd. Paljudel sagaruimsetel on sümmeetriline saba.

Süstemaatika

  • Klass sagaruimsed
    • Actinistia
      • Eoactinistia
      • Alamklass Coelacanthimorpha
        • Selts Coelacanthiformes
          • Sugukond Latimeriidae
            • Macropoma
            • Latimeria
    • Rhipidistia
      • Alamklass Kopskalad (Dipnoi)
        • Selts Ceratodontiformes
        • Selts Lepidosireniformes
      • Alamklass Tetrapodomorpha
        • Selts Rhizodontida
        • Ülemselts Osteolepidida
          • Sugukond Tristichopteridae
            • Eusthenopteron
            • Hyneria
          • Selts Osteolepiformes
        • Selts Panderichthyida
        • Tiktaalik
        • Tetrapoodid (Tetrapoda)

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Sagaruimsed
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