ArticleScientific reports2019
Probable basal allosauroid from the early Middle Jurassic Cañadón Asfalto Formation of Argentina highlights phylogenetic uncertainty in tetanuran theropod dinosaurs.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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21 citing papers in PubMed.
- Evolutionary decoupling between cranial shape and size underlies divergent evolutionary pathways in Cretaceous apex and meso-predator theropods.Communications biology · 2026Article
- Southern hemisphere ceratosaurs evolved feeding mechanics paralleling those of Northern hemisphere tyrannosaurids.Scientific reports · 2026Article
- Obligate faunivorous megatheropod size class patterns across the Jurassic-Cretaceous Periods.PeerJ · 2026Article
- Braincase of Siamraptor suwati and insights into the cranial anatomy of Carcharodontosauria.PloS one · 2026Article
- New perspectives on body size and shape evolution in dinosaurs.Biological reviews of the Cambridge Philosophical Society · 2025Review
- Re-evaluation of the Bahariya Formation carcharodontosaurid (Dinosauria: Theropoda) and its implications for allosauroid phylogeny.PloS one · 2025Article
- A new metriacanthosaurid theropod dinosaur from the Middle Jurassic of Yunnan Province, China.PeerJ · 2025Article
- Article
- The oldest monofenestratan pterosaur from the Queso Rallado locality (Cañadón Asfalto Formation, Toarcian) of Chubut Province, Patagonia, Argentina.Royal Society open science · 2024Article
- A new carcharodontosaurid specimen sheds light on the anatomy of South American giant predatory dinosaurs.Die Naturwissenschaften · 2024Article
- Reconstruction of the pelvic girdle and hindlimb musculature of the early tetanurans Piatnitzkysauridae (Theropoda, Megalosauroidea).Journal of anatomy · 2024Article
- Article
- Macroevolutionary patterns in the pelvis, stylopodium and zeugopodium of megalosauroid theropod dinosaurs and their importance for locomotor function.Royal Society open science · 2023Article
- Low morphological disparity and decelerated rate of limb size evolution close to the origin of birds.Nature ecology & evolution · 2023Article
- Modified skulls but conservative brains? The palaeoneurology and endocranial anatomy of baryonychine dinosaurs (Theropoda: Spinosauridae).Journal of anatomy · 2023Article
- Locomotor and postural diversity among reptiles viewed through the prism of femoral microanatomy: Palaeobiological implications for some Permian and Mesozoic taxa.Journal of anatomy · 2023Article
- Article
- Subaqueous foraging among carnivorous dinosaurs.Nature · 2022Article
- Article
- A new theropod dinosaur from the early cretaceous (Barremian) of Cabo Espichel, Portugal: Implications for spinosaurid evolution.PloS one · 2022Article
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2 authors.
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Abstract
Tetanurae, the most successful clade of theropod dinosaurs, including modern birds, split into three major clades early in their evolutionary history: Megalosauroidea, Coelurosauria, and Allosauroidea. The oldest tetanurans occur in the earliest Middle Jurassic, but the early fossil record of the clade is still poor. Here we report one of the oldest known and most complete pre-Late Jurassic tetanuran, the probable allosauroid Asfaltovenator vialidadi gen. et sp. nov., which has an unusual character combination, uniting features currently considered to be apomorphic of different tetanuran lineages. A phylogenetic analysis resulted in a monophyletic Carnosauria (Allosauroidea + Megalosauroidea), and the inclusion of the new taxon significantly changes topology within carnosaurs. The analysis shows concentrated homoplasy in proximal nodes at the base of Tetanurae, and a temporal peak at the Pliensbachian-Toarcian extinction event, recently identified as a potential driver of tetanuran radiation. These results highlight the complex morphological evolution in the early radiation of tetanuran theropods, in which convergences and parallelisms were extremely common. This pattern seems to be a common feature in rapid radiation events of major clades of vertebrates and might explain the common difficulties to unravel phylogenetic relationships of important lineages at the base of major clades.
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