X Fish tooth? Pierre shale sd

[Slow Walker]

Found this near the articulated mosasaur tail but in mud silt.  http://www.thefossilforum.com/index.php?/topic/124993-mosasaur-articulated-spine-pierre-shale-sd-quarry/ 

Any way to id these teeth? Also random fish vertebrae in it. One strange looking one with like a core in it. Looks like a wash together collection. Photo order got scrambled when uploaded. 

[pachy-pleuro-whatnot-odon]

Not to well versed in fish teeth, though I think Xiphactinus may be a good option for both the long black tooth (or is it teeth) and bone material. The sharks' tooth may be Squalicorax sp., which is not uncommon in the Niobrara Formation. But I'll defer to @Al Dente for these identifications...

[Al Dente]

This tooth has raised striations. My first guess would be Enchodus but I’m not certain.

 

 

[bthemoose]

I agree with Squalicorax sp. for the shark tooth.

[Slow Walker]

11 hours ago, pachy-pleuro-whatnot-odon said:

Not to well versed in fish teeth, though I think Xiphactinus may be a good option for both the long black tooth (or is it teeth) and bone material. The sharks' tooth may be Squalicorax sp., which is not uncommon in the Niobrara Formation. But I'll defer to @Al Dente for these identifications...

You think you see shark tooth in there? Tbh I didn't look at these much. But there are many weird bone parts to me. 

[Slow Walker]

3 hours ago, Al Dente said:

This tooth has raised striations. My first guess would be Enchodus but I’m not certain.

 

 

Wow, thanks! Those fish are scary. Is there a way to tell if it's the front tooth or not? 

[Slow Walker]

10 minutes ago, bthemoose said:

I agree with Squalicorax sp. for the shark tooth.

Where you see a Shark tooth? :o

[Al Dente]

This looks like part of a bony fish or shark centrum.

 

 

[Al Dente]

29 minutes ago, Slow Walker said:

Where you see a Shark tooth?

I think they are referring to this. I’m not sure that it is a tooth, the serrated edge looks odd.

 

 

[bthemoose]

1 hour ago, Al Dente said:

I think they are referring to this. I’m not sure that it is a tooth, the serrated edge looks odd.

 

 

Yes, that’s what I saw. Removing some of the surrounding matrix or taking additional photos might help determine if this is a tooth or something else.

[pachy-pleuro-whatnot-odon]

1 hour ago, Al Dente said:

I think they are referring to this. I’m not sure that it is a tooth, the serrated edge looks odd.

 

 

 

Yeah, that's what I saw and thought to be a sharks' tooth. I don't have enough experience with sharks' teeth to consider the serrations odd, so mine was a superficial and automatic assumption.

 

6 hours ago, Al Dente said:

This tooth has raised striations. My first guess would be Enchodus but I’m not certain.

 

 

 

Good one! I might have been a bit hasty assigning the tooth too Xiphactinus. But as the tooth looked as if it has a prismatic appearance, Xiphactinus seemed more likely than Enchodus. Now, considering the striations, however, I agree that roles are reversed, and Enchodus seems more likely again.

[Slow Walker]

1 hour ago, bthemoose said:

Yes, that’s what I saw. Removing some of the surrounding matrix or taking additional photos might help determine if this is a tooth or something else.

Wow that's probably the coolest thing I found. Never found a shark tooth before. I should be more careful when breaking off lumps of this rock. Looks like I split the rock near it or it was broken to start with. 

[Slow Walker]

2 hours ago, bthemoose said:

Yes, that’s what I saw. Removing some of the surrounding matrix or taking additional photos might help determine if this is a tooth or something else.

What should I use to remove this type  of matrix?

[pachy-pleuro-whatnot-odon]

4 hours ago, Slow Walker said:

What should I use to remove this type  of matrix?

 

Not sure... It looks kind of hard but brittle, so you could try dental picks. Otherwise you'd probably end up needing mechanical tools, like an air scribe, or its cheap counterpart, an engraver. Never attempt a first prep on a valued piece, though - build some experience with expendable material first...