Alopias superciliosus (Bigeye Thresher Shark)

Here is an Alopias superciliosus (Bigeye Thresher Shark) jaw that I recently acquired. The jaw is 9" wide and 7.5" inches high. There is distortion in the lower jaw with curling on both ends.

Here is the overall jaw:

To better see tooth details double clique the below pictures. If you mouse over the pictures you will see the file name which has additional positional information.

Alopias superciliosus (Bigeye Thresher Shark) does not have symphyseal teeth.

Upper jaw symphysis:

Lower jaw symphysis:

I believe that Alopias superciliosus have two posterior teeth.

Upper jaw left and right side posterior teeth:

Lower jaw left and right side posterior teeth:

Alopias superciliosus have two anterior teeth on either side of the symphysis.

Here are the upper jaw A1 and A2 teeth left and right side:

Here are the lower jaw a1 and a2 teeth left and right side:

Here are the upper jaw lateral teeth left side:

Here are the upper jaw lateral teeth right side:

Here are the lower jaw lateral teeth left side:

Here are the lower jaw lateral teeth right side:

I can see 7 rows of upper teeth:

I can see 7 rows of lower teeth:

The upper jaw has 12 tooth files left and 12 tooth files right of the symphysis

The lower jaw has 12 tooth files left and 12 tooth files right of the symphysis

To get a complete feel for Alopias superciliosus jaws and teeth you would really need to look at a lot of different jaws from different localities.

Marco Sr.