Jiang, Baoyu Zhao, Tao Regnault, Sophie Edwards, Nicholas P. Kohn, Simon C. Li, Zhiheng Wogelius, Roy A. Benton, Michael J. and Hutchinson, John R. 2017. Cellular preservation of musculoskeletal specializations in the Cretaceous bird Confuciusornis. Nature Communications, Vol. 8, p. 14779.
Motta, Matías J. Brissón Egli, Federico and Novas, Fernando E. 2017. Tail anatomy of Buitreraptor gonzalezorum (Theropoda, Unenlagiidae) and comparisons with other basal paravians. Cretaceous Research,
Fronimos, John A. and Wilson, Jeffrey A. 2017. Concavo-Convex Intercentral Joints Stabilize the Vertebral Column in Sauropod Dinosaurs and Crocodylians. Ameghiniana, Vol. 54, p. 151.
Chan, Nicholas R. 2017. Phylogenetic variation in hind-limb bone scaling of flightless theropods. Paleobiology, Vol. 43, p. 129.
Bishop, P. J. Clemente, C. J. Weems, R. E. Graham, D. F. Lamas, L. P. Hutchinson, J. R. Rubenson, J. Wilson, R. S. Hocknull, S. A. Barrett, R. S. and Lloyd, D. G. 2017. Using step width to compare locomotor biomechanics between extinct, non-avian theropod dinosaurs and modern obligate bipeds. Journal of The Royal Society Interface, Vol. 14, p. 20170276.
Persons, W. Scott and Currie, Philip J. 2017. The functional origin of dinosaur bipedalism: Cumulative evidence from bipedally inclined reptiles and disinclined mammals. Journal of Theoretical Biology, Vol. 420, p. 1.
Klinkhamer, Ada J. Wilhite, D. Ray White, Matt A. Wroe, Stephen and Claessens, Leon 2017. Digital dissection and three-dimensional interactive models of limb musculature in the Australian estuarine crocodile (Crocodylus porosus). PLOS ONE, Vol. 12, p. e0175079.
Herrera, Yanina Fernández, Marta S. Lamas, Susana G. Campos, Lisandro Talevi, Marianella and Gasparini, Zulma 2017. Morphology of the sacral region and reproductive strategies of Metriorhynchidae: a counter-inductive approach. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, Vol. 106, p. 247.
Rankin, Jeffery W. Rubenson, Jonas and Hutchinson, John R. 2016. Inferring muscle functional roles of the ostrich pelvic limb during walking and running using computer optimization. Journal of The Royal Society Interface, Vol. 13, p. 20160035.
Young, Bruce A. Dumais, Jessica John, Nicholas Lyons, Brandon Macduff, Andrew Most, Matthew Reiser, Nathan A. and Reiser, Peter J. 2016. Functional Segregation within the Muscles of Aquatic Propulsion in the Asiatic Water Monitor (Varanus salvator). Frontiers in Physiology, Vol. 7,
de Ricqlès, Armand Bourdon, Estelle Legendre, Lucas J. and Cubo, Jorge 2016. Preliminary assessment of bone histology in the extinct elephant bird Aepyornis (Aves, Palaeognathae) from Madagascar. Comptes Rendus Palevol, Vol. 15, p. 197.
Dick, Taylor J. M. and Clemente, Christofer J. 2016. How to build your dragon: scaling of muscle architecture from the world’s smallest to the world’s largest monitor lizard. Frontiers in Zoology, Vol. 13,
Heers, Ashley M. 2016. New Perspectives on the Ontogeny and Evolution of Avian Locomotion. Integrative and Comparative Biology, Vol. 56, p. 428.
Persons IV, W. Scott and Currie, Philip J. 2016. An approach to scoring cursorial limb proportions in carnivorous dinosaurs and an attempt to account for allometry. Scientific Reports, Vol. 6,
Picasso, M. B. J. 2015. Ontogenetic Scaling of the Hindlimb Muscles of the Greater Rhea (Rhea americana). Anatomia, Histologia, Embryologia, Vol. 44, p. 452.
Hutchinson, John R. Rankin, Jeffery W. Rubenson, Jonas Rosenbluth, Kate H. Siston, Robert A. and Delp, Scott L. 2015. Musculoskeletal modelling of an ostrich (Struthio camelus) pelvic limb: influence of limb orientation on muscular capacity during locomotion. PeerJ, Vol. 3, p. e1001.
Xing, Lida Buckley, Lisa G. McCrea, Richard T. Lockley, Martin G. Zhang, Jianping Piñuela, Laura Klein, Hendrik Wang, Fengping and Dodson, Peter 2015. Reanalysis of Wupus agilis (Early Cretaceous) of Chongqing, China as a Large Avian Trace: Differentiating between Large Bird and Small Non-Avian Theropod Tracks. PLOS ONE, Vol. 10, p. e0124039.
Andrada, E. Rode, C. Sutedja, Y. Nyakatura, J. A. and Blickhan, R. 2014. Trunk orientation causes asymmetries in leg function in small bird terrestrial locomotion. Proceedings of the Royal Society B: Biological Sciences, Vol. 281, p. 20141405.
Grossi, Bruno Iriarte-Díaz, José Larach, Omar Canals, Mauricio Vásquez, Rodrigo A. and Farke, Andrew A. 2014. Walking Like Dinosaurs: Chickens with Artificial Tails Provide Clues about Non-Avian Theropod Locomotion. PLoS ONE, Vol. 9, p. e88458.
Puttick, Mark N. Thomas, Gavin H. and Benton, Michael J. 2014. HIGH RATES OF EVOLUTION PRECEDED THE ORIGIN OF BIRDS. Evolution, Vol. 68, p. 1497.
Living crocodilians and limbed lepidosaurs have a large caudofemoralis longus muscle passing from tail to femur. Anatomical and electromyographic data support the conclusion that the caudofemoralis is the principal femoral retractor and thus serves as the primary propulsive muscle of the hind limb. Osteological evidence of both origin and insertion indicates that a substantial caudofemoralis longus was present in archosaurs primitively and was retained in the clades Dinosauria and Theropoda. Derived theropods (e.g., ornithomimids, deinonychosaurs, Archaeopteryx and birds) exhibit features that indicate a reduction in caudofemoral musculature, including fewer caudal vertebrae, diminished caudal transverse processes, distal specialization of the tail, and loss of the fourth trochanter. This trend culminates in ornithurine birds, which have greatly reduced tails and either have a minute caudofemoralis longus or lack the muscle entirely.
As derived theropod dinosaurs, birds represent the best living model for reconstructing extinct nonavian theropods. Bipedal, digitigrade locomotion on fully erect limbs is an avian feature inherited from theropod ancestors. However, the primitive saurian mechanisms of balancing the body (with a large tail) and retracting the limb (with the caudofemoralis longus) were abandoned in the course of avian evolution. This strongly suggests that details of the orientation (subhorizontal femur) and movement (primarily knee flexion) of the hind limb in extant birds are more properly viewed as derived, uniquely avian conditions, rather than as retentions of an ancestral dinosaurian pattern. Although many characters often associated with extant birds appeared much earlier in theropod evolution, reconstructing the locomotion of all theropods as completely birdlike ignores a wealth of differences that characterize birds.
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