ArticleiScience2022
Musculoskeletal modeling of sprawling and parasagittal forelimbs provides insight into synapsid postural transition.
Article in iScience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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24 citing papers in PubMed.
- Muscle architecture in mustelid mammals: anatomical proxies for muscle function and their relation to locomotor habit.BMC ecology and evolution · 2026Article
- Bone histological evidence for posture-related load transmission in the talpid pectoral girdle.Journal of anatomy · 2026Article
- The pectoralis muscle orientation as an indicator of the modes of wing-propelled locomotion in birds.Journal of anatomy · 2026Article
- Functional morphology and biomechanics of the locomotor apparatus in the large Late Triassic carnivore Postosuchus kirkpatricki (Archosauria: Rauisuchidae).Journal of anatomy · 2026Article
- Digital range of motion analysis is sensitive to subjective steps in joint model construction.Journal of anatomy · 2026Article
- Scaling of internal joint distance in the elbow of small- to medium-sized mammals: Implications for range of motion analyses.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
- Soft tissue constraints on joint mobility in the avian shoulder.The Journal of experimental biology · 2025Article
- Biomechanical simulations of hindlimb function inScience advances · 2025Article
- Body mass evolution as a driver of morphological and ecological diversity in terrestrial mammals.BMC ecology and evolution · 2025Article
- Adaptive landscapes unveil the complex evolutionary path from sprawling to upright forelimb function and posture in mammals.PLoS biology · 2025Article
- Bone microstructure of the basal anomodont Suminia getmanovi supports its arboreal lifestyle.Scientific reports · 2025Article
- Tibial Biomechanics and Adaptive Response to Mechanical Stimuli in the Green Iguana.Integrative organismal biology (Oxford, England) · 2025Article
- Late acquisition of erect hindlimb posture and function in the forerunners of therian mammals.Science advances · 2024Article
- Origins of mammalian vertebral function revealed through digital bending experiments.Proceedings. Biological sciences · 2024Article
- Articular surface interactions distinguish dinosaurian locomotor joint poses.Nature communications · 2024Article
- A comparative approach for characterizing the relationship among morphology, range-of-motion and locomotor behaviour in the primate shoulder.Proceedings. Biological sciences · 2023Article
- Functional Anatomy of the Thoracic Limb of the Komodo Dragon (Animals : an open access journal from MDPI · 2023Article
- Modern three-dimensional digital methods for studying locomotor biomechanics in tetrapods.The Journal of experimental biology · 2023Review
- Convergent evolution of quadrupedality in ornithischian dinosaurs was achieved through disparate forelimb muscle mechanics.Proceedings. Biological sciences · 2023Article
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Authors and funding
4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
The sprawling-parasagittal postural shift was a major transition during synapsid evolution, underpinned by reorganization of the forelimb, and considered key to mammalian ecological diversity. Determining when and how this transition occurred in the fossil record is challenging owing to limited comparative data on extant species. Here, we built forelimb musculoskeletal models of three extant taxa that bracket sprawling-parasagittal postures-tegu lizard, echidna, and opossum-and tested the relationship between three-dimensional joint mobility, muscle action, and posture. Results demonstrate clear functional variation between postural grades, with the parasagittal opossum occupying a distinct region of pose space characterized by a highly retracted and depressed shoulder joint that emphasizes versatility and humeral elevation. Applying our data to the fossil record support trends of an increasingly retracted humerus and greater elevation muscle moment arms indicative of more parasagittal postures throughout synapsid evolution.
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