T Rex tooth?

[Troodon]

Thank you, its a very nice tooth great pickup.  Looks more rectunglar than oval so leaning toward a maxillary tooth.

[Dracarys]

12 hours ago, Troodon said:

Thank you, its a very nice tooth great pickup.  Looks more rectunglar than oval so leaning toward a maxillary tooth.

Thank you again. Will you please refer to me the section where you discuss how to identify the position of T. rex tooths?

[Troodon]

Here are a couple of papers that give some insight but can be a bit technical.   Simple rule: Oval cross-sections of the base are dentary, Rectunglar are Maxillary and D shaped are Premaxillary.  

 

Tyrannosaurids..North American 

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.researchgate.net/publication/261630184_Morphometry_of_the_teeth_of_western_North_American_tyrannosaurids_and_its_applicability_to_quantitative_classification&ved=2ahUKEwiyj93JmNHjAhXPvp4KHecqA1EQFjABegQIBBAB&usg=AOvVaw0JMZdiU7unvuSM_WciC0oi

 

Tyrannosaurus rex heterodonty

https://www.researchgate.net/publication/249023627_Heterodonty_in_Tyrannosaurus_rex_Implications_for_the_taxonomic_and_systematic_utility_of_theropod_dentitions

[Dracarys]

13 hours ago, Troodon said:

Here are a couple of papers that give some insight but can be a bit technical.   Simple rule: Oval cross-sections of the base are dentary, Rectunglar are Maxillary and D shaped are Premaxillary.  

 

Tyrannosaurids..North American 

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.researchgate.net/publication/261630184_Morphometry_of_the_teeth_of_western_North_American_tyrannosaurids_and_its_applicability_to_quantitative_classification&ved=2ahUKEwiyj93JmNHjAhXPvp4KHecqA1EQFjABegQIBBAB&usg=AOvVaw0JMZdiU7unvuSM_WciC0oi

 

Tyrannosaurus rex heterodonty

https://www.researchgate.net/publication/249023627_Heterodonty_in_Tyrannosaurus_rex_Implications_for_the_taxonomic_and_systematic_utility_of_theropod_dentitions

Thank you. Very informative. Earlier you mentioned that there was a small part of the root attached to my tooth. Would you please elaborate? On my pictures, is the root the A arrow or B. Is B arrow matrix? Thank you in advance.  

[Troodon]

B is matrix and during preparation it should be removed.  A is the transition from root to crown and the root begins just below where the serrations end see photo.

 

[Dracarys]

39 minutes ago, Troodon said:

B is matrix and during preparation it should be removed.  A is the transition from root to crown and the root begins just below where the serrations end see photo.

 

 

Understood. Is it correct then that any attached root to the crown would mean that this tooth is not a shed tooth and one that would have been present in the animal upon death? Just curious. 

[Troodon]

Generally yes if it has a root.  Not sure yours qualifies for that since its just at the transition point and I would still lean to it being a shed.