English noun: osteostracan | |||
1. | osteostracan (animal) extinct jawless fish of the Devonian with armored head | ||
Synonyms | cephalaspid | ||
Broader (hypernym) | agnathan, jawless fish, jawless vertebrate | ||
Member meronym | Cephalaspida, Osteostraci, suborder Cephalaspida, suborder Osteostraci | ||