Agnatha
Of class and Vertebrata. May also be referred to as superclass Agnatha.
Superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms.
This concept's ID is @1~7396
Animal Order
- Cyclostomata
Primitive jawless aquatic vertebrate: lampreys; hagfishes.
- Ostracodermi
Extinct group of armored jawless vertebrates; taxonomy is not clear.
- Anaspida
Extinct order of jawless vertebrates.
- Conodonta
Extinct order of primitive vertebrates; the precise taxonomy is not clear; in some classifications...
Also contains
- jawless vertebrate
Eel-shaped vertebrate without jaws or paired appendages including the cyclostomes...