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Cretaceous shark teeth ID


ced0015

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Hey all! I have 2 different types of shark teeth I am having a little trouble identifying. I have a some ideas, but I would like any input y'all may have. They were found in north Mississippi in a cretaceous outcrop. Any help is appreciated!

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First pic looks similar to Cretolamna appendiculata but not quite right.

Second looks like Cretodus crassidens.

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I like Trilo-butts and I cannot lie.

 

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Could the first be a catshark, maybe Scyliorhinus sp? After looking at pictures of C. crassidens, I can definitely see the similarities in the second picture.

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I agree with Darktooth and Tony on the first picture, Cretalamna appendiculata. I think the two teeth in the second picture are also Cretalamna, probably lowers.

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Bulldozers and dirt Bulldozers and dirt
behind the trailer, my desert
Them red clay piles are heaven on earth
I get my rocks off, bulldozers and dirt

Patterson Hood; Drive-By Truckers

 

image.png.0c956e87cee523facebb6947cb34e842.png May 2016  MOTM.png.61350469b02f439fd4d5d77c2c69da85.png.a47e14d65deb3f8b242019b3a81d8160.png.b42a25e3438348310ba19ce6852f50c1.png May 2012 IPFOTM5.png.fb4f2a268e315c58c5980ed865b39e1f.png.1721b8912c45105152ac70b0ae8303c3.png.2b6263683ee32421d97e7fa481bd418a.pngAug 2013, May 2016, Apr 2020 VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png.af5065d0585e85f4accd8b291bf0cc2e.png.72a83362710033c9bdc8510be7454b66.png.9171036128e7f95de57b6a0f03c491da.png Oct 2022

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20 minutes ago, sixgill pete said:

I agree with Darktooth and Tony on the first picture, Cretalamna appendiculata. I think the two teeth in the second picture are also Cretalamna, probably lowers.

I have found Cretolamna lowers at big brook that have a similar shape, but I have never seen those teeth with double cusps. Even pics from what others have found. Does anyone know if they can indeed have double cusps?

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I like Trilo-butts and I cannot lie.

 

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I know where you found these! ;)

 

Top Left:           Cretalamna appendiculata lower anterior tooth

Top Middle:       Scapanorynchus texanus upper posterior tooth

Top Right:         Scapanorynchus texanus upper posterior tooth

Bottom Left:      Cretalamna appendiculata lower or upper anterior tooth

Bottom Right:    Cretalamna appendiculata lower or upper anterior tooth (its straight so I cant tell if lower/upper)

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1 hour ago, TNCollector said:

I know where you found these! ;)

 

Top Left:           Cretalamna appendiculata lower anterior tooth

Top Middle:       Scapanorynchus texanus upper posterior tooth

Top Right:         Scapanorynchus texanus upper posterior tooth

Bottom Left:      Cretalamna appendiculata lower or upper anterior tooth

Bottom Right:    Cretalamna appendiculata lower or upper anterior tooth (its straight so I cant tell if lower/upper)

Thank you! I've got quite the collection from that "secret" spot!

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1 hour ago, TNCollector said:

I know where you found these! ;)

 

Top Left:           Cretalamna appendiculata lower anterior tooth

Top Middle:       Scapanorynchus texanus upper posterior tooth

Top Right:         Scapanorynchus texanus upper posterior tooth

Bottom Left:      Cretalamna appendiculata lower or upper anterior tooth

Bottom Right:    Cretalamna appendiculata lower or upper anterior tooth (its straight so I cant tell if lower/upper)

 

I disagree with the upper row middle and right being Scapanorhychus.  But, I do agree with the two bottom row teeth being Cretalamna as I previously stated.

Bulldozers and dirt Bulldozers and dirt
behind the trailer, my desert
Them red clay piles are heaven on earth
I get my rocks off, bulldozers and dirt

Patterson Hood; Drive-By Truckers

 

image.png.0c956e87cee523facebb6947cb34e842.png May 2016  MOTM.png.61350469b02f439fd4d5d77c2c69da85.png.a47e14d65deb3f8b242019b3a81d8160.png.b42a25e3438348310ba19ce6852f50c1.png May 2012 IPFOTM5.png.fb4f2a268e315c58c5980ed865b39e1f.png.1721b8912c45105152ac70b0ae8303c3.png.2b6263683ee32421d97e7fa481bd418a.pngAug 2013, May 2016, Apr 2020 VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png.af5065d0585e85f4accd8b291bf0cc2e.png.72a83362710033c9bdc8510be7454b66.png.9171036128e7f95de57b6a0f03c491da.png Oct 2022

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16 minutes ago, sixgill pete said:

 

I disagree with the upper row middle and right being Scapanorhychus.  But, I do agree with the two bottom row teeth being Cretalamna as I previously stated.

They look like pretty typical goblin shark upper posterior teeth to me, the smaller ones in the back of the palatoquadrate. The groove also generally indicates goblin shark. I have always labelled these teeth as goblin, but I may be wrong. Let's try @Al Dente

teeth.png.f49b61bb2cb31d9085ea31c08fa39cb7.png

 

Here is one from the Mississippi Office of Geology, but in better condition. Sometimes the side cusps are attached to the main one.

tooth2.png.f93712f18b8e3c77e77d6026a910f7ed.png

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On 4/25/2017 at 1:06 PM, TNCollector said:

They look like pretty typical goblin shark upper posterior teeth to me, the smaller ones in the back of the palatoquadrate. The groove also generally indicates goblin shark. I have always labelled these teeth as goblin, but I may be wrong. Let's try @Al Dente

teeth.png.f49b61bb2cb31d9085ea31c08fa39cb7.png

 

Here is one from the Mississippi Office of Geology, but in better condition. Sometimes the side cusps are attached to the main one.

tooth2.png.f93712f18b8e3c77e77d6026a910f7ed.png

 

 

I agree that those look more like Scapanorhynchus posteriors.  Cretalamna posteriors are wider than they are high.

 

 

 

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