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To date, I've found 4 teeth, all in the same general area. One is shallow, the others are a big longer. The 3rd is a bit broken, I don't think I have a photo online right now of it. All are attached firmly to the limestone and I don't have any hope of ever getting them out clean.

 

1st Tooth:

 

20190617_223617484_iOS.jpg

 

20190617_223910016_iOS.jpg

 

petalodus-tooth-measurements.jpg

 

2nd Tooth:

 

D5062DE5-B60B-49BA-86A7-FE73D7643CD8.jpe

 

D3DD30E2-4632-4F15-8284-88E3CA1FA4ED.jpe

 

petalodus-tooth-II-measurements.jpeg

 

3rd Tooth

 

No photos of this one. Sorry I promised 4 teeth, sadly only photos of three.

 

4th Tooth:

 

3178D529-2725-4028-AAD2-C0361E187417-sca

 

7B11D94C-B097-49AB-889C-8BD84352EDDE.jpe

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Very cool. I find these ancient cartilaginous fish (proto-shark?) teeth fascinating.

 

 

Cheers.

 

-Ken

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Amazing serrations!! I'd give all three of my pinky toes to find any one of those three teeth!

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4 minutes ago, sharkdoctor said:

all three of my pinky toes

Either you are polydactyl with supernumary toes to spare or you failed an important counting lesson in kindergarten. :P

 

What is the exchange rate between pinkies and petalodus these days? ;)

 

 

Cheers.

 

-Ken

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I enjoy seeing these early shark teeth!

Thanks for posting these lovely specimens. :) 

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Thanks for sharing! I learned what a Petalodous is today. Very cool! :) 

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2 hours ago, FossilNerd said:

I learned what a Petalodous is today.

Always nice to go to bed with more information packed into the old noodle than what you woke up with. ;) I treasure those days.

 

 

Cheers.

 

-Ken

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Very cool to see excellent finds such as these coming out of the Carboniferous of Western Pennsylvania. Congratulations and thanks for posting them. 

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Great teeth, thank you for sharing! I always love seeing Paleozoic shark teeth that other folks have found. 

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@cngodles Thank you very much for sharing such nice specimens.  :envy:

1 hour ago, digit said:

Always nice to go to bed with more information packed into the old noodle than what you woke up with. ;) I treasure those days.

@diginit  I totally, fully, absolutely agree!  Let me add a bit of advise, if I may:  Sleep with cotton in both your ears.  That way, regardless of what side you sleep on, the "old noodle" won't leak out more info than you took in that day. :wacko: That MUST be what happens;  otherwise I'd be a flippin' GENIUS by now.  What da' ya' think?  :fistbump:

 

4 hours ago, Fossildude19 said:

I enjoy seeing these early shark teeth!

@Fossildude19  ME TOO! :SlapHands:

 

@FossilNerd Aren't they cool.  :wub:I have found a few in the Texas Penn.,  but not near enough.  They are rare indeed, esp is such good shape

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Nice Teeth! There was a wide variety of early sharks in that period!

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I took photos of the third tooth.It was a bit more complete than I remember it being.

 

DSC_2883-scaled.jpg

 

DSC_2887-scaled.jpg

 

1F510D23-03EA-4EA0-9EFA-7A19CBC8CD38-sca

 

2FE37DCC-0DE7-4F00-A313-A2D41140227F-sca

 

C7BEBE43-F4E9-4883-9769-A91A78E274A5-sca

 

3552794A-B6E5-46C1-89F1-A10B2E3DDDE2-sca

 

0944C224-95B0-4413-9D1F-7DA28451984E-sca

 

 

 

 

 

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  • 1 month later...

Tonight I found my 5th tooth. It has the most dimensional root I’ve seen so far. I polished two sides of the rock that is holding them. The rock is interesting enough by itself with an embedded brachiopod shell, a sea pen on the back and more. I also have the negative, which has the other half and shows extra detail. I’ll post that after this.

 

 

0E054627-244D-4CF3-B68A-02E91D1F30B6.jpeg

DF85E309-635E-4975-B626-B4664819AE2B.jpeg

264E95B6-D9E3-4D5A-BB5F-0F46CFA8E540.jpeg

031CA3E2-3B89-4B11-9AFC-A5D3F3C95E53.jpeg

767E0CC3-FC6D-428F-AB0D-15ECB1B7F285.jpeg

84F5B757-C45A-475C-B689-58ACBAB46D22.jpeg

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Showing negative side. The other half of the tooth crown is essentially in this piece.

A023C7A6-EFA4-4A16-9694-660417A003BB.jpeg

B24DF802-E4CC-4BBA-8E15-13AAA3ED8412.jpeg

EA031F3B-E3FC-4D87-9F9A-B44BEFEE603F.jpeg

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Great specimens!

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  • 2 months later...

Tooth 6, 7, and 8 have been found. The last two actually came out of the rock.


Number 6:

9FBF2692-8D42-4E7B-977F-99893AAB92E4-sca

 

Number 7, was exposed to water. Includes root:

petalodus-tooth-VII-with-root-003-scaled

 

Number 8, widest I’ve found. Top enamel preserved:

petalodus-tooth-VIII-03.jpg

 

More information for each:

https://fossil.15656.com/2020/03/15/petalodus-vi-part-b/

https://fossil.15656.com/2020/04/02/petalodus-vii/

https://fossil.15656.com/2020/04/09/petalodus-tooth-viii/

 

Petalodus Research:

https://fossil.15656.com/research-pages/petalodus/

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deutscheben

Very nice, you are building quite a collection of these! 

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  • 2 months later...

Petalodus 9 - 13

 

Since my last post, I have found 5 more specimens of Petalodus to add. While the first 4 were found more in less in my comfort zone, in Brush Creek Limestone locally, the last one I found in a secondary location, about 10 miles North East. This is the Pine Creek Limestone, which is younger than my local limestone. While I have not yet identified my local limestone 100%, the Pine Creek has been verified by state geologists directly. This limestone is different compared to my own. It's more fissile, and falls apart much more easily. My limestone is more like solid cement.

 

So first, the last 4 Brush Creek specimens:

 

CG-0048 is just a tooth blade. It's very bright in color and both sides are broken off. Out of all my teeth, this was the first one I couldn't properly measure.

 

petalodus-tooth-IX-03-1024x1024.jpg

 

CG-0055 is a beautiful specimen. In prepping I removed the crown. I was able to measure and photograph both sides before gluing it back on the base rock.

 

F26C96A4-9219-4286-8A40-04CEF9F07E52-768

 

CG-0058 was another low crown specimen much like my first. Only the labial view was photographed as I was worried about breaking it if I tried to remove it from the matrix.

 

petalodus-ohioensis-pano-merged-1024x691

 

CG-0070 was my second ever broken specimen, whereas I never was able to recover the cusp. I was breaking apart limestone when I spotted the tooth cross-section. However a lengthy search never turned up the other side.

 

1496C4B6-6D2A-4B65-A044-9F39136F7809-768

 

CG-0087 is a nice specimen from a new location for me. This location is along a highway and hard to work, so I typically stop when I'm going by and bring a few boulders home with me. Typically they are littered at the base of the hill and there is only one possible horizon they come from. The Brush Creek is buried under the ground in this location, however is it exposed about 100-500 feet away. This is the first tooth I've found that had a very dark black coloring. The one corner did break, so I had to glue it back on. Lingual and Labial views below with scale.

 

petalodus-ohioensis-pine-creek-cg-0087-0

 

petalodus-ohioensis-pine-creek-cg-0087-0

 

 

 

 

Full write-ups of each:

CG-0048: https://fossil.15656.com/2020/04/16/petalodus-ix/

CG-0055: https://fossil.15656.com/2020/04/24/petalodus-ohioensis-x/

CG-0058: https://fossil.15656.com/2020/05/04/petalodus-ohioensis-xi/

CG-0070: https://fossil.15656.com/2020/06/17/petalodus-xii/

CG-0087: https://fossil.15656.com/2020/07/12/petalodus-ohioensis-xiii/

 

My Petalodus research where I am attempting to recover modern holotype photos of all the species of Petalodus: https://fossil.15656.com/research-pages/petalodus/

 

:zzzzscratchchin:

 

 

 

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