Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
heterostracan | Yes | No | No | No |
jawless vertebrate | Yes | No | No | No |
heterostracan (noun) | jawless vertebrate (noun) |
---|---|
extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian | eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms |