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frankh8147

Mosasaur or croc tooth - NJ Cretaceous

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frankh8147

Hello everyone!

 

I hoping to get some clarification to help differentiate Cretaceous crocodile teeth from Mosasaur teeth. These two were found in the New Jersey Cretaceous.

 

The first one is a shade under 1/2 an inch. It is conical and doesn't appear to have any cutting edges (but they could be worn off). I was leaning towards Mosasaur tooth on the second one because of the size of 8/10ths' of an inch, but it is slightly more slender than my other Mosasaur teeth, very conical and the root looked a bit different. It appears to have one very weak cutting edge but I'm not positive.

 

It was pointed out to me that crocodile teeth roots tend to have concentric rings so I was wondering what everyone thought regarding these guys. Thanks!

 

@Plax @josephstrizhak

 

 

531.jpg

5311.jpg

5314.jpg

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frankh8147

Tooth 2..

53114.jpg

53189.jpg

dein.jpg

dein1.jpg

dein4.jpg

dein5.jpg

dein6.jpg

dein9.jpg

dein22.jpg

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Plax

tooth #2 looks like mosasaur to me. First tooth is very worn and am note sure that very worn mosasaur teeth wouldn't expose concentric rings like croc teeth have. Guess someone with a lot of mosasaur teeth could grind the hollow base off one to compare. If I'm looking at Mosasaurus hoffmani versus Deinosuchus rugosus teeth the difference in the basal structure is readily apparent. Wish I had specimens here at work so I could show a pic.

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The Jersey Devil

I agree with Plax; the second tooth is Mosasaur. The first one is either crocodile or mosasaur.

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non-remanié

The extra pictures do confirm that number 2 is  mosasaur.  

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frankh8147
11 hours ago, non-remanié said:

The extra pictures do confirm that number 2 is  mosasaur.  

Thanks Steve! That was the one I had labeled Mosasaur but wanted to show you to confirm so we can check that one off the list. :)

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JarrodB

I agree with tooth one being croc and # 2 mosasaur. 

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frankh8147
3 hours ago, JarrodB said:

I agree with tooth one being croc and # 2 mosasaur. 

Thanks Jarrod!

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Harry Pristis

 

For comparison:

 

 

mosasaurtooth.jpg

gatorvsmosasaurtooth.jpg

gatorvsmosasaurtoothB.jpg

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