| Information | |
|---|---|
| has gloss | (noun) extinct jawless fish of the Devonian with armored head osteostracan, cephalaspid |
| lexicalization | eng: cephalaspid |
| lexicalization | eng: osteostracan |
| subclass of | (noun) eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms jawless fish, jawless vertebrate, agnathan |
| Links | |
|---|---|
| member of | (noun) extinct group of armored fish-like vertebrates; taxonomy is not clear Cephalaspida, Osteostraci, suborder Osteostraci, suborder Cephalaspida |
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