Intermediate and Symphyseal/Parasymphyseal teeth in sharks

[The Jersey Devil]

Hey everyone, I was just wondering what exactly intermediate teeth were and also what the difference between symphyseal and parasymphyseal teeth is.

 

  The small fourth tooth in the upper jaw of Carcharias taurus is marked as an intermediate.

 

Thanks for any help!

[powelli1]

Hi josehstrizhak I will try, a symphyseal tooth is in the center of the lower  jaw and the two parasymphyseal teeth off center in the upper jaw and the two intermediate are the third tooth on the left or right  sifde of the upper jaw because it is a flex point in the jaw. That's the best I can come with for now. HAPPY NEW YEARS George  PS; I  hope someone can add to that. 

[SailingAlongToo]

@sixgill pete  @MarcoSr

[MarcoSr]

Look at  "A Key to the Common Genera of Neogene Shark Teeth" 2006 by Robert W. Purdy at the below link.  It will have the definitions that you asked about.  Your picture comes from this paper.

 

http://paleobiology.si.edu/pdfs/sharktoothKey.pdf

 

Marco Sr.