Definition of "nonavian" [nonavian]

• Not avian (adjective)

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• "It unseats the diminutive Cretaceous theropod Albertonykus borealis (described in 2008) as the smallest-known nonavian dinosaur from North America."
• "Far too often than I care to recall, the term “missing link” has been applied to fossils representing the “transitional” phylogenetic sequence from nonavian theropod dinosaurs to birds, from “primitive” placental mammals to whales, and from fish to tetrapods to name but a few."
• "Since the nonavian dinosaurs went extinct 65 Ma ago, I suspect that 40 Ma is the right number."