Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
suborder Heterostraci | Yes | No | No | No |
heterostracan | Yes | No | No | No |
suborder Heterostraci (noun) | heterostracan (noun) |
---|---|
extinct group of armored jawless fishes or fish-like vertebrate; taxonomy is not clear | extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian |