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[dinosaur] Theropod bite force and teeth size, shape and position on jaws




Ben Creisler
bcreisler@gmail.com


A new paper:

Quentin T. Monfroy (2017)
Correlation between the size, shape and position of the teeth on the jaws and the bite force in Theropoda.
Historical Biology (advance online publication)
doi: http://dx.doi.org/10.1080/08912963.2017.1286652   
http://www.tandfonline.com/doi/full/10.1080/08912963.2017.1286652


Theropods have fascinated both paleontologists and the general public due to their large diversity of sizes and morphologies. They also present a large variation in tooth morphologies. Previous studies have estimated the bite force of several specimens. The goal of this study is to determine if there is a correlation between the tooth size, shape and position on the skull and mandible and the bite force of these dinosaurs. Measurements were made on several theropods, including the bending strength of the teeth on the anterior-posterior and the mediolateral axes of the jaws, as well as the bending strength of the mandible, and were compared to fossil and modern Crocodylia. We observed that several bending strength maxima of the teeth trends were aligned with key areas of the mandible, and that the size, shape as well as the position of the teeth on the jaws were correlated with the bite force of both Crocodylia and theropods, which can be related to their diet and feeding habits.