Heterostraci

Translingual

Etymology

From hetero- (“different”, from Ancient Greek ἕτερος (héteros)) +‎ Latin ostracī (“ostracum/ostracon”, genitive noun), literally “of differing ostraca”.

Proper noun

†Heterostraci

  1. A taxonomic subclass within the class Pteraspidomorphi – extinct pteraspidomorph jawless vertebrates that lived primarily in marine and estuary environments.

See also

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