From about 1870 onwards scientists have generally agreed that the post-cranial skeletons of many dinosaurs contained many air-filled cavities (postcranial skeletal pneumaticity, especially in the vertebrae.
Desde aproximadamente 1870 en adiante os científicos concordan en xeral en que os esqueletos poscraniais de moitos dinosauros contiñan moitas cavidades cheas de aire (ósos pneumáticos), especialmente nas vértebras.