Need help identifying this jawbone I found in the banks of St. John’s River, FL near mill cove

[FossilFisherman]

Hi this is my first ever post so apologies for the atrocity that is my attempt at using tags lol, I found this guy on the banks of the St. John’s River FL by mill cove, i know its a jawbone, but to what i have no idea, could be mammal or marine, because there are lots of Osprey Bald Eagles and other birds of prey in the area. Any help is much appreciated! I also think it’s some sort of predator due to the shape of the teeth. 

[Coco]

Hi,

 

Looks like barracuda.

 

Coco

[FossilFisherman]

Oh wow really? I wouldn’t have thought I’d find a Barracuda Jaw this far north, especially during the winter months! Thank you!

[FossilFisherman]

I was thinking maybe a kingfish though, since it’s a really popular species for sport fishermen in the area and stuff?

[Al Dente]

5 minutes ago, FossilFisherman said:

I was thinking maybe a kingfish though, since it’s a really popular species for sport fishermen in the area and stuff?

I agree. Looks like the maxilla from a king mackerel. Image from here- https://www.facebook.com/amealformaggots/photos/pcb.980957962307536/980957942307538/?type=3&theater

 

 

 

 

[ted coulianos]

Agree with Coco; right upper maxilla of a barracuda.  

https://www.pinterest.com/pin/15058979988929667/

[FossilFisherman]

Thank you all for your very helpful replies, I’m leaning towards this jawbone being that of a king mackerel rather than a barracuda. I appreciate each and every response, as yall have taken the time out of your days to help me find the answer to my question. Thanks again! 
 

Edited January 13 by FossilFisherman

[Harry Pristis]

For comparison:

 

[hemipristis]

I lean towards mackerel due to the uniformity of the tooth size and regularity of tooth spacing

Edited January 14 by hemipristis