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Jose Montemayor

ID for this shark

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Jose Montemayor

Hi there! This is my first post at Fossil Forum, hope this information could help in getting some help to identify this fossil.

It was found at a quarry in Vallecillo, Mexico (northeast part, less than 100 kms from Laredo, Texas).

The fossils found here belong to the the Vallecillo member from the Agua Nueva formation, aparently from late Cenomanian to early Turonian.

The full length including the separate vertebrae is aproximately 29 inches or 74 centimeters.

The longest tooth is aproximately 1.4 centimeters long.

I was only able to post a single picture, hope it helps.

DSC04345.JPG

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SUPER BAT

Hybodus

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Fossildude19

Can you try to post another photo in a reply, without the ruler covering the fossil?

You should be able to. There is a 4 mb limit to the photo size. 

You may have to crop or resize your photo. 

We can't really make a proper ID without seeing the teeth, and any more detail you can get in better photos.  :unsure: 

 

 

23 minutes ago, SUPER BAT said:

Hybodus

How did you arrive at this identification?    :headscratch:

 

I think you may be a bit premature on that ID.

Let's see what other, more detailed photos show first. 

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Misha
35 minutes ago, SUPER BAT said:

Hybodus

I don't think this is what that is

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Carl
56 minutes ago, SUPER BAT said:

Hybodus

How are you deciding that?

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Brett Breakin' Rocks
1 minute ago, Carl said:

How are you deciding that?

With .. youthful abandon ..... 

 

B

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Jose Montemayor

Does this pinture work?

IMG_5691.JPG

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Jose Montemayor

IMG_5685.JPG

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Jose Montemayor

IMG_5686.JPG

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Macrophyseter

It could be some species of catshark (Scyliorhinidae). Gonzalez-Rodriguez et al. (2013) reports that body fossils of scyliorhinids with vertebra and soft tissue preserved are known from Vallecillo.

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Darktooth

This is pretty darn cool! Wouldnt mind having that in my collection!:wub:

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caldigger

Whatever your spieces turns out to be, it is a magnificent specimen. :envy:

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Tidgy's Dad

Excellent find! :)

I've no idea what it could be but it's a beautiful fossil.

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Mark Kmiecik

Beautiful specimen, regardless of what it is. I'm drooling.

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Jose Montemayor
2 hours ago, Macrophyseter said:

It could be some species of catshark (Scyliorhinidae). Gonzalez-Rodriguez et al. (2013) reports that body fossils of scyliorhinids with vertebra and soft tissue preserved are known from Vallecillo.

Thanks a lot. I will look for that bibliography. Hope I can find some useful information. 

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Jose Montemayor
1 hour ago, Al Dente said:

I can only guess. Almost looks like a very young Cretoxyrhina based on the teeth. You might want to contact Kenshu Shimada. He has published on material from the area and he knows his sharks.

Thank you very much. I´ll look for his papers to see if I can find something. 

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MrR

Really spectacular fossil. :wub: Congratulations.

 

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MarcoSr

Really nice fossil.  I agree with Eric.  Based upon what I can see of the teeth, I would also consider Cretoxyrhina.

 

Marco Sr.

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Jose Montemayor
1 hour ago, MrR said:

Really spectacular fossil. :wub: Congratulations.

 

Thank you! 

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Jose Montemayor
30 minutes ago, MarcoSr said:

Really nice fossil.  I agree with Eric.  Based upon what I can see of the teeth, I would also consider Cretoxyrhina.

 

Marco Sr.

Thanks Marco. I’ll look up more information about it. 

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MarcoSr
9 hours ago, Jose Montemayor said:

Thanks Marco. I’ll look up more information about it. 

 

Below is a Cretoxyrhina dentition from Welton and Farish 1993.

 

Scan.thumb.jpg.1be789d2dcc32d5e10a47c8c74de82ed.jpg

 

 

Marco Sr.

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