@article{ce8b5eacc5504c948df77df0ec4c6ec8,
title = "Temporomandibular joint shape in anthropoid primates varies widely and is patterned by size and phylogeny",
abstract = "The temporomandibular joint is the direct interface between the mandible and the cranium and is critical for transmitting joint reaction forces and determining mandibular range of motion. As a consequence, understanding variation in the morphology of this joint and how it relates to other aspects of craniofacial form is important for better understanding masticatory function. Here, we present a detailed three-dimensional (3D) geometric morphometric analysis of the cranial component of this joint, the glenoid fossa, across a sample of 17 anthropoid primates, and we evaluate covariation between the glenoid and the cranium and mandible. We find high levels of intraspecific variation in glenoid shape that is likely linked to sexual dimorphism and joint remodeling, and we identify differences in mean glenoid shape across taxonomic groups and in relation to size. Analyses of covariation reveal strong relationships between glenoid shape and a variety of aspects of cranial and mandibular form. Our findings suggest that intraspecific variation in glenoid shape in primates could further be reflective of high levels of functional flexibility in the masticatory apparatus, as has also been suggested for primate jaw kinematics and muscle activation patterns. Conversely, interspecific differences likely reflect larger scale differences between species in body size and/or masticatory function. Results of the covariation analyses dovetail with those examining covariation in the cranium of canids and may be indicative of larger patterns across mammals.",
keywords = "covariation, geometric morphometrics, glenoid, masticatory apparatus",
author = "Terhune, {Claire E.} and Mitchell, {D. Rex} and Cooke, {Siobh{\'a}n B.} and Kirchhoff, {Claire A.} and Massey, {Jason S.}",
note = "Funding Information: We thank all of the collections managers and researchers who enabled our access to materials used in this study: William Stanley, Lawrence Heaney, and Adam Ferguson (Field Museum of Natural History); Neil Duncan and Marisa Surovy (American Museum of Natural History); Lyman Jellema and Johannes Haile-Selassie (Cleveland Museum of Natural History); Brenda Baker (Arizona State University); Emmanuel Gilissen (Royal Museum for Central Africa); and Darin Lunde (Smithsonian National Museum of Natural History). We also thank students Christopher Carter and Logan Hearp for their work processing and organizing the 3D data. This research was supported by funding from the National Science Foundation (BCS-1551766 to CET, BCS-1551669 to CAK, and BCS-1551722 to SBC) with additional funding was provided by Bernard Wood and The George Washington University to JM. Funding Information: We thank all of the collections managers and researchers who enabled our access to materials used in this study: William Stanley, Lawrence Heaney, and Adam Ferguson (Field Museum of Natural History); Neil Duncan and Marisa Surovy (American Museum of Natural History); Lyman Jellema and Johannes Haile‐Selassie (Cleveland Museum of Natural History); Brenda Baker (Arizona State University); Emmanuel Gilissen (Royal Museum for Central Africa); and Darin Lunde (Smithsonian National Museum of Natural History). We also thank students Christopher Carter and Logan Hearp for their work processing and organizing the 3D data. This research was supported by funding from the National Science Foundation (BCS‐1551766 to CET, BCS‐1551669 to CAK, and BCS‐1551722 to SBC) with additional funding was provided by Bernard Wood and The George Washington University to JM. Publisher Copyright: {\textcopyright} 2022 American Association for Anatomy.",
year = "2022",
month = sep,
doi = "10.1002/ar.24886",
language = "English (US)",
volume = "305",
pages = "2227--2248",
journal = "Anatomical Record",
issn = "1932-8486",
publisher = "John Wiley and Sons Inc.",
number = "9",
}