The branch of paleontology which treats of fossil birds.
Open English WordNet identifies the related term as a narrower or more specific lexical category.
The Paleozoic time or strata.
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The branch of paleontology which treats of fossil birds.
Open English WordNet identifies the related term as a narrower or more specific lexical category.
That part of biology which relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of…
Open English WordNet identifies the related term as a broader lexical category for at least one sense.
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