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Shark teeth identification help please


ScienceGuy

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Please help identify these teeth from Conecuh River, Andalusia. I pulled about 500 teeth out of the deposits and these tiny teeth are the only ones of its kind in the bunch. They are about 5mm X 7mm. Thanks.

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I was going with Nurse Shark on #1

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And I would agree on Angel for #2

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Top left is Physogaleus secundus or possibly a juvenile Galeocerdo latidens. The other is Abdounia recticona. The second photo are both Orectolobus ziegenhinei.

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I agree with Al Dente on this. The first two are effeminately not 7 gill shark. 

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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I will admit I’m not definite on the 7 gill shark but I came across 3 out of 3 hits on it listing it as such..and who am I to argue with the Aroura fossil museum LOL!

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Randy, the geologic age of the sediments between Aurora and Andalusia Alabama are different. With a very different fauna. Also look at the root. It is completely wrong for a Hexanchid shark. It has a nutrient groove, Hexanchids do not.  The tags he provided state, Point A Dam, Eocene. That in itself makes an ID sheet provided by the Aurora Museum which includes Miocene / Pliocene species inaccurate for use.

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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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Thanks everyone! I’m learning more and more! I’m a Science teacher of 26 years and am gaining field experiences that will make me a more effective teacher to my students. Hopefully going to turn them on to this field of Science!

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After Checking out the abdounia teeth I can go along with that classification.

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Can I get y’all to weigh in on these 4mm wide by 9mm long. Taken from same Eocene layer from Point A dam. The root sticks out farther than normal on the anterior side and has a nutrient groove. Roots form  an acute angle.

849AFECE-980B-4852-8A3A-45FA4D2A8BF9.jpeg

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Was wanting information on a good place to go digging have 12 that would live to dig and don’t know where on Conechu river don’t know if it wrong time of year never have gotten to go before thanks for the help

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18 hours ago, ScienceGuy said:

Can I get y’all to weigh in on these 4mm wide by 9mm long. Taken from same Eocene layer from Point A dam. The root sticks out farther than normal on the anterior side and has a nutrient groove. Roots form  an acute angle.

849AFECE-980B-4852-8A3A-45FA4D2A8BF9.jpeg

I think you have 2 different species here. There are several species these could be. Can you post pics of front, back and left / right sides please. Preferably of each tooth individually. Then crop the pics so we get pics of only the tooth.

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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17 hours ago, sixgill pete said:

I think you have 2 different species here. There are several species these could be. Can you post pics of front, back and left / right sides please. Preferably of each tooth individually. Then crop the pics so we get pics of only the tooth.

Will these pics work?  PDF file has a clearer image.thanks!

tooth compilation.pdf

 

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  • 1 month later...
On 7/16/2019 at 4:08 PM, Al Dente said:

Top left is Physogaleus secundus or possibly a juvenile Galeocerdo latidens. The other is Abdounia recticona. The second photo are both Orectolobus ziegenhinei.

 

Hi Al Dente,

 

I agree.  Yeah, that's actually a tough choice between Physogaleus and Galeocerdo.  I might lean toward the latter if only because the serrations might be stronger on both cutting edges like that tooth in Galeocerdo.  Physogaleus is so variable, though, especially in that Early-Middle Eocene time frame.

 

I was only sure the first tooth in the second photo was Orectolobus.  I forgot that someone had named the Andalusia nurse shark to species.  That's an uncommon tooth there.

 

Jess

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On 7/18/2019 at 7:05 AM, ScienceGuy said:

Will these pics work?  PDF file has a clearer image.thanks!

tooth compilation.pdf

 

AF2C7355-7AE2-485F-944D-F35815D194A7.png

 

I don't think I've seen a sand tiger species other than Striatolamia macrota from there.  Your tooth is something else.  I think it's Odontaspis.

 

The second tooth is from a sand tiger.  I'm wondering if that could be a Striatolamia intermediate tooth.

 

 

 

 

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