Cretaceous Shark Teeth ID Help

[Evan Green]

Hey! Wanted some outside input on what these teeth could be- the first four photos are my attempts at identifying them but more opinions would be greatly appreciated, as I'm still learning. Especially for the splotchy off-white tooth. All of these were found in 2016 in the W. M. Browning Cretaceous Fossil Park. Many thanks!

[Darktooth]

There are no tiger sharks from the Cretaceous.

[Fossildude19]

Brightened:

 

 

[siteseer]

For most shark teeth, it helps a lot if you provide a view of both sides and sometimes a profile view and a view from straight above it and/or from straight below it.  Based on what I see, I think all the teeth marked as Scapanorhynchus and Carcharias are Scapanorhynchus though with less confidence in the partial teeth.

 

I agree with the Squalicorax ID.  I think it's S. pristodontus.

 

I don't know what the two partial unknowns are. 

 

I don't know what those first two unknowns are.  The single tooth after that might be a Scapanorhynchus.

 

As for the last group, I think the tooth on the left is Cretalamna and the others might be Scapanorhynchus.

[Evan Green]

7 minutes ago, siteseer said:

For most shark teeth, it helps a lot if you provide a view of both sides and sometimes a profile view and a view from straight above it and/or from straight below it.  Based on what I see, I think all the teeth marked as Scapanorhynchus and Carcharias are Scapanorhynchus though with less confidence in the partial teeth.

 

I agree with the Squalicorax ID.  I think it's S. pristodontus.

 

I don't know what the two partial unknowns are. 

 

I don't know what those first two unknowns are.  The single tooth after that might be a Scapanorhynchus.

 

As for the last group, I think the tooth on the left is Cretalamna and the others might be Scapanorhynchus.

Thanks so much!! I'll get some better shots of some of them later today- but this was a huge help!!

[bthemoose]

The one on the left of the group labeled “Galeocerdo” is a Squalicorax. I’m not sure what the other partial tooth on the right is, but my guess would be Scapanorhynchus.

[GPayton]

I think the first picture under Unknown Teeth is also Scapanorhynchus texanus, just a lateral tooth that's missing half of the root and the (already really small) cusplets that would have been on either side of the main blade. 

[Jared C]

The only genus of cretaceous lamniform with serrations is Squalicorax. Therefore your two partial Tigers are actually Squalicorax (provided the rightmost one also has serrations). 

Edited July 13, 2022 by Jared C
clarification