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Theropod Tooth Identification


Joseph Kapler

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Here are two addition teeth from the Hell Creek Formation of Custer County, Montana.  I believe they are from a juvenile T-rex.  The first tooth is either a maxillary or dentary  tooth.  The second is a either a pre-maxillary or pre-dentary tooth. I would appreciate any thoughts on the taxonomy and jaw position.  By the way I use these teeth for teaching Fossil Friday classes to kids. I apologize for the photos; for some reason I was having camera problems. TR2j.thumb.jpg.f9e9ba54ddd1b6e83cc33b17079bf36a.jpg

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Agree, the top one might be a lateral dentary tooth.  The bottom one a right anterior dentary tooth.  Both are juvie.

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