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Tag: shawn larson

5 things to know about sixgill shark teeth, this month’s 3D printed reward!

Posted on June 18, 2018June 18, 2018 By David Shiffman
Science

I recently unveiled a new tier of Patreon rewards: 3D printed shark and ray models!For $17 per month, you will get a monthly 3D printed educational model of different shark or ray parts in the mail, and you’ll be supporting my efforts to provide these models to schools for free.

This month’s reward is a tooth from Hexanchus griseus, the bluntnose sixgill shark, a member of the cowshark family!This particular specimen was scanned by Dr. Lisa Whitenack as part of her Ph.D. dissertation work on comparative evolution and biomechanics of shark teeth.

Figure from Whitenack et al. 2011, the sixgill tooth is the one in the lower right! This paper studied teeth of different shapes using Finite Element Analysis (FEA). When Lisa inputs the shape of the tooth, how elastic the tooth is, and how much force the tooth experiences into her computer program, FEA will map out stress on the entire tooth. High points of stress are where a tooth would be likely to break.

Learn more about the bluntnose sixgill shark and it’s unusual shaped teeth below!

Read More “5 things to know about sixgill shark teeth, this month’s 3D printed reward!” »

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