| English noun: Heterostraci | |||
| 1. | Heterostraci (animal) extinct group of armored jawless fishes or fish-like vertebrate; taxonomy is not clear | ||
| Synonyms | suborder Heterostraci | ||
| Broader (hypernym) | animal order | ||
| Member holonym | heterostracan | ||
| Member meronym | order Ostracodermi, Ostracodermi | ||