ArticleJournal of anatomy2020
Histology and pneumaticity of Aoniraptor libertatem (Dinosauria, Theropoda), an enigmatic mid-sized megaraptoran from Patagonia.
Article in Journal of anatomy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed.
- Megaraptoridae: a gracile model of large predators? insights from a multiproxy approach.Die Naturwissenschaften · 2026Article
- Computed tomography reveals multiple origins of extreme caudal vertebral pneumaticity in sauropod dinosaurs.Journal of anatomy · 2026Article
- The evolution of the air sac system in theropod dinosaurs: Evidence from the Upper Cretaceous of Madagascar.Journal of anatomy · 2026Article
- Latest Cretaceous megaraptorid theropod dinosaur sheds light on megaraptoran evolution and palaeobiology.Nature communications · 2025Article
- The influence of soft tissue volume on estimates of skeletal pneumaticity: implications for fossil archosaurs.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Article
- Re-evaluation of the Bahariya Formation carcharodontosaurid (Dinosauria: Theropoda) and its implications for allosauroid phylogeny.PloS one · 2025Article
- Rise of the king: Gondwanan origins and evolution of megaraptoran dinosaurs.Royal Society open science · 2025Article
- First unambiguous record of pneumaticity in the axial skeleton of alvarezsaurians (Theropoda: Coelurosauria).PloS one · 2025Article
- Osteology of the axial skeleton ofPeerJ · 2023Article
- The absence of an invasive air sac system in the earliest dinosaurs suggests multiple origins of vertebral pneumaticity.Scientific reports · 2022Article
- A large Megaraptoridae (Theropoda: Coelurosauria) from Upper Cretaceous (Maastrichtian) of Patagonia, Argentina.Scientific reports · 2022Article
- Histology and pneumaticity of Aoniraptor libertatem (Dinosauria, Theropoda), an enigmatic mid-sized megaraptoran from Patagonia.Journal of anatomy · 2020Article
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3 authors.
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Abstract
Aoniraptor libertatem is a mid-sized megaraptoran that comes from the Late Cretaceous (Turonian) Huincul Formation at Río Negro province, Patagonia, Argentina. In this study, we conducted a detailed analysis of pneumaticity of the sacrum and tail of Aoniraptor. This shows a complex structure within these vertebrae, being composed by small diverticulae surrounding large pneumatic canals and a central chamber that opens outside through pleurocoels or pneumatic canals. Further, we carried out a histologic analysis which confirms the pneumatic nature of these anatomical features. Both analyses found that chevrons in Aoniraptor were invaded by pneumaticity, a feature that appears to be unique to this taxon. In addition, a comparative analysis between Aoniraptor and other theropods (e.g. Gualicho and other megaraptorans) was carried out. This resulted in the modification of previous schemes about the evolution of pneumaticity through Theropoda, the finding of some evolutionary pneumatic traits through Megaraptora, and the usefulness of pneumatic traits as a taxonomic tool.
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