| 释义 |
Osteostraci
Thesaurus| Noun | 1. | Osteostraci - extinct group of armored fish-like vertebrates; taxonomy is not clearCephalaspida, suborder Cephalaspida, suborder Osteostracianimal order - the order of animalsorder Ostracodermi, Ostracodermi - extinct group of armored jawless vertebrates; taxonomy is not clearcephalaspid, osteostracan - extinct jawless fish of the Devonian with armored head |
Osteostraci
Osteostraci[‚äs·tē′äs·trə‚sī] (paleontology) An order of extinct jawless vertebrates; they were mostly small, with the head and part of the body encased in a solid armor of bone, and the posterior part of the body and the tail covered with thick scales. Osteostraci
Osteostraci an order of jawless fish-like vertebrates, possessing a large dorsal head shield, found in the SILURIAN PERIOD and DEVONIAN PERIOD.Osteostraci
Synonyms for Osteostracinoun extinct group of armored fish-like vertebratesSynonyms- Cephalaspida
- suborder Cephalaspida
- suborder Osteostraci
Related Words- animal order
- order Ostracodermi
- Ostracodermi
- cephalaspid
- osteostracan
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