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

The most important things are the hardest things to say. They are the things you get ashamed of because words diminish your feelings - words shrink things that seem timeless when they are in your head to no more than living size when they are brought out.
Stephen King