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Things crossopterygian often describes (“crossopterygian ________”)
fish, fishes, ancestors, stock, ancestor, skull, ancestry
How crossopterygian often is described (“________ crossopterygian”)
devonian, new, carboniferous, primitive, fossil, water, early, extinct
Commonly used words are shown in bold. Rare words are dimmed.
Click on a word above to view its definition.
Click on a word above to view its definition.