| 释义 |
osteostracan
Thesaurus| Noun | 1. | osteostracan - extinct jawless fish of the Devonian with armored headcephalaspidagnathan, jawless fish, jawless vertebrate - eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct formsCephalaspida, Osteostraci, suborder Cephalaspida, suborder Osteostraci - extinct group of armored fish-like vertebrates; taxonomy is not clear |
osteostracan
Synonyms for osteostracannoun extinct jawless fish of the Devonian with armored headSynonymsRelated Words- agnathan
- jawless fish
- jawless vertebrate
- Cephalaspida
- Osteostraci
- suborder Cephalaspida
- suborder Osteostraci
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