Shark, upper or lower jaw tooth?

[David in Japan]

Hi all, i would like to know how you identify shark upper jaw tooth from lower jaw tooth. 

 

Are there any specific trait making easy such differenciation? 

For example, he in japan you can find a lot of cretalamna appendiculata tooth. How can i guess if the tooth found is an upper or lower jaw tooth? 

 

 

[ynot]

It is dependent on the species of shark.

Some have a pronounced difference between upper and lower teeth, while others have little or no difference between upper and lower.

Check out the dentition sets on elasmo.com.

 

http://www.elasmo.com/

 

or on jelasmo.

 

http://naka.na.coocan.jp/

[Coco]

Have a look on my signature : heterodonty

 

Coco