Peace River and Venice ID

[FossilizedFlorida]

Hi there guys,
 

I was hoping you could help with the identification of three different fossils. The ones with the ridges that look like miniature mammoth teeth were found in peace river in Arcadia, while the flatter set of teeth and fang-looking thing were found at a land site in Venice. Thanks in advance for your help!
 

 

[Fossildude19]

Welcome to the Forum.   

 

The last photo look like puffer fish mouth plates. 

Not sure on the small one. 

Other angles might be helpful.  

 

 

EDIT:  I took the liberty of enlarging, cropping, and brightening your first two photos.

 

 

 

[Fossildude19]

@Sacha @jcbshark @Harry Pristis   @Shellseeker @digit

[Auspex]

Those in the first image above are baracuda, I believe.

[digit]

42 minutes ago, Fossildude19 said:

The last photo look like puffer fish mouth plates. 

+1 for puffer mouth plates. The stacked plates ("miniature mammoth tooth") is indicative of the mouthparts of a pufferfish. Do an internet image search for "diodontidae fossil" and you'll see several images which should match-up with your finds.

 

18 minutes ago, Auspex said:

Those in the first image above are baracuda, I believe.

+1 here too. These flattened acutely triangular teeth have been attributed to barracudas. I tend to wonder if there are several different types of top-level piscivore teeth under this generic identification but the stock term for these have just been "barracuda". They are quite common in the micro-matrix I search through along with other species of fishes and rays.

 

http://www.thefossilforum.com/index.php?/topic/51350-micro-fossils-from-cookiecutter-micro-matrix/&do=findComment&comment=552081

 

http://www.thefossilforum.com/index.php?/topic/25014-all-barracuda-teeth/

 

Cheers.

 

-Ken

[Auspex]

8 minutes ago, digit said:

...I tend to wonder if there are several different types of top-level piscivore teeth under this generic identification...

There is a strong morphological resemblance between baracudda teeth and wahoo teeth, but these are separable.

Are there any other extant species showing this level of convergence?

[digit]

57 minutes ago, Auspex said:

re there any other extant species showing this level of convergence?

That I could not say. I know my fish species very well underwater, less so dead and in a fish market when most of my coloration and marking queues are gone, and other than a few barracudas and morays that I've been in very close proximity to, I know little of what they have hiding in their jaws. It could be that there are no other families with these fierce looking teeth but I couldn't tell you what the teeth of other top-level predators like jacks or dolphinfishes look like.

 

Cheers.

 

-Ken

[Auspex]

A couple of the Mackerals have similar dentition. Though anterior-posterior heterodont, none are as laterally compressed.

Convergent evolution occurs when a plan works well for a given situation, but where species overlap, a difference must be maintained as micro-niches afford the only exploitable resources.

Ain't it cool?

[digit]

Being a computer programmer by trade, I really enjoy learning about nature's code reuse and incremental optimization.

 

 

Cheers.

 

-Ken

[Sacha]

I'm struggling to find any thing recognizable in the pics so far.

[Shellseeker]

I believe it is fish, but I have found hundreds of barracuda teeth in the Peace River -- none looked like this with the hooked tip..  I have never seen anything like it .