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Taxonomy is not clear
Answer for the clue "Taxonomy is not clear ", 12 letters:
heterostraci
Alternative clues for the word heterostraci
Word definitions for heterostraci in dictionaries
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Word definitions in Wikipedia
Heterostraci ("Different scales") is an extinct subclass of pteraspidomorph jawless vertebrate that lived primarily in marine and estuary environments. The first identifiable heterostracans appear in the fossil record during the early Silurian , and all, ...