Interesting Cretaceous Period Marine Fossil Find

[Rockin' Ric]

Found on a regular fossil hunting excursion. Each trip there's always an interesting fossils that turn up from sifting. Any ideas on both objects?

 

The one on the bottom left appears to be coral but not sure how much coral was prevalent during the Cretaceous Period? Been to this site a lot and this is the first find of anything like it.

 

The top right I'm getting comments that it's a partial mouthplate of a fish? Any help with ID is appreciated. Thank y'all!

[Castle Rock]

I believe that the lower left specimen is likely to be a fragment from the tail of an ichthyodectid fish. The other is something I don't recognize. Dave 

[Jared C]

Still curious about the right most fossil because I'm totally stumped - can you include some photos of the broken sides? 

[JohnJ]

7 hours ago, Rockin' Ric said:

The top right I'm getting comments that it's a partial mouthplate of a fish?

Possibly to a lungfish.

 

@Carl

[Al Dente]

The bone on the right is part of a Plethodid parasphenoid bone. Here’s a similar one from the Oceans of Kansas website.

 

 

[Rockin' Ric]

A paleotologist from Mississippi confirmed that is a fragment of a tooth plate of a Plethodid fish. Thanks guys and thanks Al Dente for the confirmation as well. Learn something new everyday from the Fossil Forum Community!

 

More pics of the sides and bottom.