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Title: Data from: Estimating cranial musculoskeletal constraints in theropod dinosaurs      
description:
Many inferences on the biology, behaviour and ecology of extinct vertebrates are based on the reconstruction of the musculature and rely considerably on its accuracy. Although the advent of digital reconstruction techniques has facilitated the creation and testing of musculoskeletal hypotheses in recent years, muscle strain capabilities have rarely been considered. Here, a digital modelling approach using the freely available visualization and animation software BLENDER is applied to estimate cranial muscle length changes and optimal and maximal possible gape in different theropod dinosaurs. Models of living archosaur taxa (Alligator mississippiensis, Buteo buteo) were used in an extant phylogenetically bracketed framework to validate the method. Results of this study demonstrate that Tyrannosaurus rex, Allosaurus fragilis and Erlikosaurus andrewsi show distinct differences in the recruitment of the jaw adductor musculature and resulting gape, confirming previous dietary and ecological assumptions. While the carnivorous taxa T. rex and Allo. fragilis were capable of a wide gape and sustained muscle force, the herbivorous therizinosaurian E. andrewsi was constrained to small gape angles.
creator:
Lautenschlager, Stephan
keywords:
Functional morphology
musculature
muscle strain
digital reconstruction
type:
Article
ID:
oai:datadryad.org:10255/dryad.99681
accesstypes:
download
landingPage: http://hdl.handle.net/10255/dryad.99681
authentication:
none
authorization:
none
ID:
doi:10.5061/dryad.c75j9
Lautenschlager S (2015) Estimating cranial musculoskeletal constraints in theropod dinosaurs. Royal Society Open Science 2: 150495.
http://hdl.handle.net/10255/dryad.99681
RSOS-RSOS-150495.R1
setID:
hdl_10255_3
recNum:
86
setName:
Main
dateReleased:
12-08-2015
issueDate:
20151104
accessionDate:
10-14-2015
dateCreated:
10-14-2015
abbreviation:
Dryad
ID:
SCR:005910
name:
Dryad Digital Repository
homepage: http://www.datadryad.org
ID:
SCR:005910
name:
Dryad Data Repository

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