ArticleScientific reports2019
Ontogenetic changes in the body plan of the sauropodomorph dinosaur Mussaurus patagonicus reveal shifts of locomotor stance during growth.
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 20 papers.
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20 citing papers in PubMed.
- Functional morphology and biomechanics of the locomotor apparatus in the large Late Triassic carnivore Postosuchus kirkpatricki (Archosauria: Rauisuchidae).Journal of anatomy · 2026Article
- Hindlimb functional morphology and locomotor biomechanics of the small Late Triassic pseudosuchian reptile Gracilisuchus stipanicicorum (Archosauria: Gracilisuchidae).Journal of anatomy · 2026Article
- New perspectives on body size and shape evolution in dinosaurs.Biological reviews of the Cambridge Philosophical Society · 2025Review
- Centres of rotation and osteological constraints on caudal ranges of motion in the sauropod dinosaurRoyal Society open science · 2025Article
- Biomechanical modeling of musculoskeletal function related to the terrestrial locomotion of Riojasuchus tenuisceps (Archosauria: Ornithosuchidae).Anatomical record (Hoboken, N.J. : 2007) · 2025Article
- Article
- Exceptional Early Jurassic fossils with leathery eggs shed light on dinosaur reproductive biology.National science review · 2024Article
- Volumetric versus Element-scaling Mass Estimation and Its Application to Permo-Triassic Tetrapods.Integrative organismal biology (Oxford, England) · 2024Article
- Quantitative biomechanical assessment of locomotor capabilities of the stem archosaurRoyal Society open science · 2023Article
- A path to gigantism: Three-dimensional study of the sauropodomorph limb long bone shape variation in the context of the emergence of the sauropod bauplan.Journal of anatomy · 2022Article
- Femoral specializations to locomotor habits in early archosauriforms.Journal of anatomy · 2022Article
- Radial porosity profiles: a new bone histological method for comparative developmental analysis of diametric limb bone growth.Royal Society open science · 2022Article
- Walking with early dinosaurs: appendicular myology of the Late Triassic sauropodomorphRoyal Society open science · 2022Article
- Earliest evidence of herd-living and age segregation amongst dinosaurs.Scientific reports · 2021Article
- Extreme growth plasticity in the early branching sauropodomorphBiology letters · 2021Article
- The endocranial anatomy of Buriolestes schultzi (Dinosauria: Saurischia) and the early evolution of brain tissues in sauropodomorph dinosaurs.Journal of anatomy · 2021Article
- The locomotor musculature and posture of the early dinosauriform Silesaurus opolensis provides a new look into the evolution of Dinosauromorpha.Journal of anatomy · 2020Article
- Article
- Assesment and interpretation of negative forelimb allometry in the evolution of non-avian Theropoda.Frontiers in zoology · 2019Article
- Seis-ing up the Super- Morrison formation sauropods.Journal of anatomyArticle
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6 authors.
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Abstract
Ontogenetic information is crucial to understand life histories and represents a true challenge in dinosaurs due to the scarcity of growth series available. Mussaurus patagonicus was a sauropodomorph dinosaur close to the origin of Sauropoda known from hatchling, juvenile and mature specimens, providing a sufficiently complete ontogenetic series to reconstruct general patterns of ontogeny. Here, in order to quantify how body shape and its relationship with locomotor stance (quadruped/biped) changed in ontogeny, hatchling, juvenile (~1 year old) and adult (8+ years old) individuals were studied using digital models. Our results show that Mussaurus rapidly grew from about 60 g at hatching to ~7 kg at one year old, reaching >1000 kg at adulthood. During this time, the body's centre of mass moved from a position in the mid-thorax to a more caudal position nearer to the pelvis. We infer that these changes of body shape and centre of mass reflect a shift from quadrupedalism to bipedalism occurred early in ontogeny in Mussaurus. Our study indicates that relative development of the tail and neck was more influential in determining the locomotor stance in Sauropodomorpha during ontogeny, challenging previous studies, which have emphasized the influence of hindlimb vs. forelimb lengths on sauropodomorph stance.
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