A Couple of Cretaceous Shark teeth that need an ID

[fossilsonwheels]

I’m not really sure I’ll be to get an ID given the condition, size and difficulty in photographing them but I thought I’d try.

 

First tooth. Just over 1mm. This one is from Atco Formation micro mix. There was an Odontaspis on Elasmo that looked somewhat similar but I really don’t know. 

[fossilsonwheels]

Another tiny, incomplete Atco Formation tooth. No clue. I think it’s Carcharhiniformes but I could be wrong about that. Less than 1mm. 

[fossilsonwheels]

This is one I can’t quite put an ID on from our Mesaverde micro matrix. I am pretty puzzled. I found a Columbusia on Elasmo that is the best match that I’ve so far. Open to any suggestions 

[Al Dente]

Have you tried this paper?

 

 

[fossilsonwheels]

13 hours ago, Al Dente said:

Have you tried this paper?

 

 

Yes I based my ID’s on other teeth from that paper but I didn’t see anything I could match do those two teeth. 

[Al Dente]

On 2/28/2021 at 10:25 PM, fossilsonwheels said:

This is one I can’t quite put an ID on from our Mesaverde micro matrix. I am pretty puzzled. I found a Columbusia on Elasmo that is the best match that I’ve so far. Open to any suggestions

I looked through some of my references and couldn’t get a good match. It’s an odd one.

[fossilsonwheels]

Another Atco Formation tooth that I’m not real sure of the right identification. In looking at Hamms paper, I thought perhaps Ginglymostoma but I’m not sure. I don’t think Chiloscyllium as I’ve seen quite a few of those and this just doesn’t look like one to me. 

 

Best I could do on the pics. About 2mm. 

[siteseer]

On 3/2/2021 at 1:50 AM, Al Dente said:

I looked through some of my references and couldn’t get a good match. It’s an odd one.

 

I think it's a Cantioscyllium tooth. 

 

Jess