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Examples
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However, dinosaurs and pterosaurs may have been closely related, and most paleontologists place them together in the group Ornithodira, or "bird necks".
News for WSLS 10 2008
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Given so wide a phylogenetic distribution, postcranial pneumatization is likely plesiomorphic for Ornithodira (birds, dinosaurs and pterosaurs) and possibly as ancient as basal Archosauria (O'Connor,
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