Associations to the word «Heterostracan»

Wiktionary

HETEROSTRACAN, noun. Any of the Heterostraci, an extinct class of jawless vertebrates that lived primarily in marine and estuary environments.

Dictionary definition

HETEROSTRACAN, noun. Extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian.

Wise words

Much wisdom often goes with fewest words.
Sophocles