Comments and corrections on 3D modeling studies of locomotor muscle moment arms in archosaurs

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Introduction

Materials and Methods

Results and Discussion

Bates & Schachner (2012): moment arms and muscle function Poposaurus and in bipedal ornithodirans

Bates et al. (2012): moment arms and muscle function in Lesothosaurus and bipedal ornithodirans

Maidment, Bates & Barrett (2014) and Maidment et al. (2014): moment arms and muscle function evolution in ornithischian dinosaurs

Conclusion

Supplemental Information

Corrected abduction–adduction and long axis rotation moment arm data

DOI: 10.7717/peerj.1272/supp-1

Animation show hip flexion-extension motion, with the hip abduction–adduction fixed at 10°abduction and long-axis rotation fixed at zero

DOI: 10.7717/peerj.1272/supp-2

Animation of abduction–adduction motion with the flexion-extension and long-axis rotation axes fixed at zero

DOI: 10.7717/peerj.1272/supp-3

Animation of long-axis rotation motion with the flexion-extension and abduction–adduction axes fixed at zero

DOI: 10.7717/peerj.1272/supp-4

Animation of abduction–adduction motion with the flexion-extension angle at 45° flexion and long-axis rotation axis fixed at zero

DOI: 10.7717/peerj.1272/supp-5

Animation of long-axis rotation motion with the flexion-extension angle at 45° flexion and abduction–adduction axis fixed at zero

DOI: 10.7717/peerj.1272/supp-6

Additional Information and Declarations

Competing Interests

The authors declare there are no competing interests.

Author Contributions

Karl Bates and Susannah C.R. Maidment conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper, digitized specimens.

Emma R. Schachner conceived and designed the experiments, contributed reagents/materials/analysis tools, wrote the paper, reviewed drafts of the paper, digitized specimens.

Paul M. Barrett conceived and designed the experiments, contributed reagents/materials/analysis tools, wrote the paper, reviewed drafts of the paper.

Funding

The authors received no funding for this work.

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