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Unknown large croc tooth from Georgia


-Andy-

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Hi all, I have a mysterious croc tooth that needs identifying. It measures 7cm in a straight line, with a crown length of 3cm.

 

It was found in a backwater near Savannah, Georgia. It came out of an old stream bed eroding out. The area is normally a Miocene deposit where there are Gavialosuchus americanus but the original owner (who is a fossil croc expert) sincerely believes it's something else as there are supposedly earlier deposits there as well. He thinks it is from the lineage of Deinosuchus.

 

Has anyone seen such croc/alligator teeth in Georgia? Has anyone heard of late Cretaceous deposits near Savannah?

 

Thank you.

Deino-georgia.jpg

P1140543.JPG

P1140551.JPG

Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday!

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Deinosuchus? But don't take my word on that. But that's a monster tooth, nice find:).

Life started in the ocean. And so did my interest in fossils;).

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I’m no expert on this, but what I can say is that I think it’s more likely from a croc larger than Gavialosuchus/Thecachampsa solely based on size. This would be an abnormally large tooth from that genus. Deinosuchus seems feasible.

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The geological map would argue against anything cretaceous near Savannah.   I think most of that portion of the state was under water during the cretaceous

Screenshot_20230419_164115_Drive.thumb.jpg.e3ac8accfe304cb1e899edb686a4eabc.jpg

 

 

How do these Gavialosuchus teeth compare to your tooth?

http://blogs.cofc.edu/macebrownmuseum/2016/04/08/friday-fossil-feature-an-investi-gator-of-the-oligocene-of-south-carolina/

 

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That's a terrific tooth! :)

I have no idea what type of croc it's from but it's a lovely specimen! 

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17 minutes ago, Troodon said:

The geological map would argue against anything cretaceous near Savannah.   I think most of that portion of the state was under water during the cretaceous.

 

 

I agree. The geological maps I've seen indicate that area is far more likely of Quaternary age.

 

If I had seen the crown by itself without locality data, I would definitely think it's a Deinosuchus. Now I am curious to see if anyone have seen these kinda tooth from non-Cretaceous deposits.

Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday!

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Georgia County Map and Geologic Map:

 

georgia-county-map.jpg    3788621_orig.jpg  

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

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@-Andy-

That is a gorgeous specimen you have there. Quite robust. It definitely looks like the Deinosuchus teeth we find in a Cretaceous lag deposit in SE NC. Mrs.SA2 and I have 15 or so in our personal collection. @Daleksec and @sixgill pete have collected the NC site and have some in their collections as well. I really can't think of anything else it could be, but I've never fossil hunted in GA, and other than Coastal Plains, I don't know much about its geology.

 

Given what you "probably" have, the location you found it and the known geology, I believe there is definitely some scientific significance,/ importance to your find. I recommend contacting some museums and universities for their opinions. My first thought is @Boesse of course. Even though he's a whale guy he may know a good reptile person. University of Florida has really good reptile folks and there is Dr. Hastings at the VA Museum of Natural History, who is a reptile specialist (and also graduated from the U of FL program.)

 

Keep us in the loop as you learn more on your mystery. It's very exciting!

 

Cheers,

SA2

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Don't know much about science books.........

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I agree that @Boesse would be the person to offer an authoritative opinion.  Personally I think Troodon has it with his link.  The Cretaceous is deeply buried in the Savannah area, and there are no fossiliferous Cretacous exposures upriver, so despite the similarities I think Deinosuchus can be discounted.  That assumes that the locality info is correct of course.

 

Don

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Nice find. I'm really glad these big crocs became extinct!

"Don't force it, just use a bigger hammer"

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Gavialosuchus? Is it known from the Miocene / Pliocene?  There are some very large croc teeth found at Lee Creek and they are Thecachampsa as far as I know. I have also seen a Thecachampsa tooth this size from the Belgrade Quarry in  North Carolina.

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Hey all - this tooth certainly falls within the range of variation for Gavialosuchus. @sixgill pete - Gavialosuchus and Thecachampsa are the same animal, with some using one name over the other.

 

Deinosuchus teeth, if memory serves, have strong longitudinal fluting. I've seen others claim to have discovered "Deinosuchus" fossils from Savannah, including a large premaxilla, but all seem to be consistent with Gavialosuchus just like we get here in Charleston.

 

Bobby

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Wow.. Savannah, like the city directly above Jacksonville on the Atlantic... You definitely grow those gators big up there... Congratulations on a fantastic find:yay-smiley-1:

The White Queen  ".... in her youth she could believe "six impossible things before breakfast"

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14 hours ago, Boesse said:

Hey all - this tooth certainly falls within the range of variation for Gavialosuchus. @sixgill pete - Gavialosuchus and Thecachampsa are the same animal, with some using one name over the other.

 

Deinosuchus teeth, if memory serves, have strong longitudinal fluting. I've seen others claim to have discovered "Deinosuchus" fossils from Savannah, including a large premaxilla, but all seem to be consistent with Gavialosuchus just like we get here in Charleston.

 

Bobby

 

Thanks for the info!

 

I searched online for Gavialosuchus teeth pictures, and found this:

 

Gavialosuchus.JPG.e475aa04e16cbd0db15b3d23f67d2b91.JPG

 

The rear teeth on this Gavialosuchus jaw looks like a match for mine too.

 

gavialosuchus-americanus-miocene-crocodile-tate-museum-casper-college-FCR9GN.thumb.jpg.c30ec7d6fea5f4205f4260036427c7be.jpg

 

 

Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday!

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  • 4 weeks later...

Provenance is everything...especially with crocodilian/crocodylomorph teeth, as they're not specialized like mammalian teeth. A croc tooth from one area can look EXACTLY like a croc tooth from a completely different age and location and yet, be from two completely different species. About the only way you can pin down species or even genus for crocodilians is knowing the provenance and subsequently knowing the species that have been described from the location from associated material such as a skull/jaw with intact teeth.

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On March 9, 2018 at 7:21 AM, SailingAlongToo said:

@-Andy-

That is a gorgeous specimen you have there. Quite robust. It definitely looks like the Deinosuchus teeth we find in a Cretaceous lag deposit in SE NC. Mrs.SA2 and I have 15 or so in our personal collection. @Daleksec and @sixgill pete have collected the NC site and have some in their collections as well. I really can't think of anything else it could be, but I've never fossil hunted in GA, and other than Coastal Plains, I don't know much about its geology.

 

Given what you "probably" have, the location you found it and the known geology, I believe there is definitely some scientific significance,/ importance to your find. I recommend contacting some museums and universities for their opinions. My first thought is @Boesse of course. Even though he's a whale guy he may know a good reptile person. University of Florida has really good reptile folks and there is Dr. Hastings at the VA Museum of Natural History, who is a reptile specialist (and also graduated from the U of FL program.)

 

Keep us in the loop as you learn more on your mystery. It's very exciting!

 

Cheers,

SA2

 

If Jim Knight is at the Charleston Museum, he would be someone to contact.  He was at one of the SC museums years ago.

 

Jess

 

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  • 3 weeks later...
On 3/11/2018 at 12:38 AM, Boesse said:

Hey all - this tooth certainly falls within the range of variation for Gavialosuchus. @sixgill pete - Gavialosuchus and Thecachampsa are the same animal, with some using one name over the other.

 

Deinosuchus teeth, if memory serves, have strong longitudinal fluting. I've seen others claim to have discovered "Deinosuchus" fossils from Savannah, including a large premaxilla, but all seem to be consistent with Gavialosuchus just like we get here in Charleston.

 

Bobby

 

Hi @Boesse, does this look like a Cetacean tooth to you? I emailed Dr David Schwimmer, and he replied this:

 

Interesting material, but definitely not from the Cretaceous. The isolated tooth is probably not crocodylian, but rather from a cetacean: the proportions of crown and root really don't match any I've seen, and the crown curvature is too extreme to be a posterior croc tooth.  I'm not expert on Miocene whales, but I know there were a number of toothed whales and dolphins around at the time.  You might check with the Calvert Museum for a better ID.

 

I trust Dr Schwimmer in croc matters, and I would like your input as well seeing as you have experience with whales.

Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday!

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On 4/6/2018 at 8:56 AM, M Harvey said:

Any chance it could be a sea lion canine?  I pull this photo from the internet.

?auth=co&loc=en_US&id=66885&part=2

Mel10-23-10Allodesmus Sp..JPG.url

 

I don't think it is. But I am unsure now as the original ID of croc is in question.

Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday!

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2 hours ago, -Andy- said:

check with the Calvert Museum for a better ID.

Stephen Godfrey from the CMM might be a good person to contact, as he is also an expert on ceteceans.

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Happy hunting,

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  • 3 weeks later...

@Troodon @ynot @Jesuslover340 @Boesse @WhodamanHD @siteseer @sixgill pete @SailingAlongToo @HoppeHunting

 

I sent pics of my Georgia tooth to the Calvert Marine Museum. Dr. Stephen J. Godfrey and the other paleo experts replied. They say it's definitely not a cetacean. They believe it's Thecachampsa which they find there.

 

I will label it Gavialosuchus for now.

Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday!

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