Found at point a dam

[DurableGrandma]

Hi there after reading another post I figured I should post these here to try and figure out what they are. Collected at point a dam 

[DurableGrandma]

I believe this what the base of these look like not too sure if they're from the same thing but they have a very similar ridge that runs down one side 

[DurableGrandma]

I also find these little nodules and was wondering if they're anything or if it's just a neat rock 

[DurableGrandma]

While I'm at it I may as well ask about some of the teeth that I find if anyone can ID these I'd appreciate it. As well as these mouth plates I was wondering if it was possible to tell what fish they came from. 

Edited December 3, 2024 by DurableGrandma

[Fossildude19]

I took the liberty of cropping and contrasting the first few photos:

 

 

 

 

 

 

 

 

I wonder if these are pieces of softshell turtle plastron bones, or carapace bones.  

 

Size might help us figure these out.

[DurableGrandma]

I added some images with measurements on the longer sides cropping/contrasting sure made the images look better haha 

[minnbuckeye]

Photo from Black River Fossils, drum fish mouth plate?

 

[DurableGrandma]

1 hour ago, minnbuckeye said:

Photo from Black River Fossils, drum fish mouth plate?

 

Those look very similar I think that might be a match I did do some digging myself based on that and found this post from the forum I supposed drum fish is the common name?  

Edit: upon posting this I saw the previews of the other images and found the answers to some of my other questions as well haha

 

 

 

Edited December 3, 2024 by DurableGrandma

[FossilDAWG]

I suggest the fossils in the first few photos may be Pristis lathami rostral teeth, a type of sawfish.  these are not uncommon at the Point A Dam.

 

Don

[Al Dente]

7 hours ago, FossilDAWG said:

I suggest the fossils in the first few photos may be Pristis lathami rostral teeth, a type of sawfish.  these are not uncommon at the Point A Dam.

 

Don

 

I agree.

[Al Dente]

If you can find this publication, it will help you identify most of your finds.