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Aureliano, T., Ghilardi, A. M., Müller, R. T., Kerber, L., Pretto, F. A., Fernandes, M. A., Ricardi-Branco, F. and Wedel, M. J. 2022. The absence of an invasive air sac system in the earliest dinosaurs suggests multiple origins of vertebral pneumaticity. Scientific Reports. Vol. 12(1), p. null.