WordNet: heterostracan

extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian

• hypernym agnathan, leuaton kala, leuattomat kalat, leuattomat selkärankaiset

• member holonym Heterostraci, Heterostraci-alalahko

heterostracan

• (englanti) heterostracan (synonyymi)