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It's been a good week for fossiling in New Mexico...found this one in a dry wash in west-central NM. The nearest upstream units were (from nearest to far) kmf-Menefee, kpl-Point Lookout Sandstone and the Satan tongue of the Mancos shale (kms).

 

I've always thought of the Western Interior Seaway as fairly shallow and the shark a deep variety, but the lit says the extant cousin patrols 100m to 1,300m and the WIS was as deep as 750, so there's habitat, I would think.

 

Thoughts?

 

Thanks!

 

 

goblin_1.jpg

Goblin_2.jpg

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Looks either Goblin or Sandtiger. If you look on a geological map for your area and observe that the area where you found the tooth was Cretaceous then the tooth is most likely a goblin.

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13 minutes ago, Pilobolus said:

 

I've always thought of the Western Interior Seaway as fairly shallow and the shark a deep variety, but the lit says the extant cousin patrols 100m to 1,300m and the WIS was as deep as 750, so there's habitat, I would think.

 

Thoughts?

 

 

 

 

Modern goblin sharks are deep water but Scapanorhynchus teeth are found in shallow marine deposits and possibly brackish water too.

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Yeah, it's Scapanorhynchus for sure.  Sand tigers of that area and time just don't get that big.  It would guess it's from the Point Lookout Sandstone which is well-known for bearing shark teeth - abundant in at least a couple of sites - but only because I don't know of any occurrences of shark teeth in the other layers you noted (shark teeth certainly come out of the Mancos Shale in at least Colorado and Utah).

 

 

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