Associations to the word «Heterostracan»
Adjective
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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
Men govern nothing with more difficulty than their tongues,
and can moderate their desires more than their words.