After bringing the fossils back to lab for study, which included conducting CT scans at a local hospital, the researchers found examples of air pockets throughout its axial skeleton—some in ...

More information: G.J. Windholz et al, First unambiguous record of pneumaticity in the axial skeleton of alvarezsaurians (Theropoda: Coelurosauria), PLOS ONE (2025). DOI: 10.1371/journal.pone ...