Gnathostomata
Gnathostomata Rheam fossylagh: Anmagh sy'n Ordoviciagh - jiu | ||||||||
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She vertebree as keeil oc Gnathostomata
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Rang oaylleeagh | ||||||||
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Rang | ||||||||
Placodermi † |
She mynphylum eh Gnathostomata, as dreeym-juntee as keeilyn oc aynsyn. Ta'n possan cliaghtey ve ny h-ard-rang jeh daa phossan mooar: eeastyn lunganeagh; as fir elley, goaill stiagh eeastyn craueagh, ushagyn, sheeintee, beisteigyn as daa-veagheeyn. Rere'n eie shoh, ta Gnathostomata ny phossan shuyragh da possan ny dreeym-juntee gyn keeil, Agnatha.
Ec gnathostomatanyn er mayrn, ta fine myelinagh er ny neayr-chillagyn oc, as corys coadey so-chaghlaa.
Rang-oardraghey
[reagh | edit source]V'ad cliaghtey eddyrscarrey Gnathostomata ayns daa fo-rang: eeastyn (Pisces) as Tetrapoda. Ec y traa t'ayn, cha nel ad credjal dy vel eeastyn nyn bossan monophyletagh, dy ghra myr shen, cha nel possan dooghyssagh ynrican ayn ta goaill stiagh y clane. Er y fa shoh, cha nel ad jannoo ymmyd jeh Pisces nish.
Ec y traa t'ayn, t'ad credjal dy vel Gnathostomata eddyrscarrey myr shoh:
Gnathostomata ├──† Placodermi └── ├──Chondrichthyes └──Teleostomi ├──† Acanthodii └──Euteleostomi (goaill stiagh y shenn phossan Osteichthyes + Tetrapoda) ├──Actinopterygii └──Sarcopterygii ├──Coelacanthimorpha └──Choanata ├──Dipnoi └──Tetrapoda
Rere rang-oardraghey classicagh, t'eh myr shoh:
- Straih: Chondrichthiomorphi
- Rang: Chondrichthyes
- Straih: Osteichthyes
- Rang: Actinopterygii
- Rang: Sarcopterygii
- Straih: Tetrapoda
- Rang: Daa-veagheeyn
- Rang: Beistyn
- Rang: Ushagyn
- Rang: Sheeintee