Post your best shark teeth finds of 2020

[bthemoose]

On 12/30/2020 at 3:36 PM, thair said:

The two best ones I had this year. Peripristis semicircularis & Petlodus , Central Texas, Penn

Nice finds. I love the look of the Petalodonts! I’m curious if you or anyone else has a good illustration of how these teeth were arranged/looked in the shark’s mouth. That’s something I’ve been looking for but haven’t yet found. I’ve seen diagrams identifying the root, cutting blade, etc. but still can’t seem to visualize it for myself.

[Jackson g]

I'll cheat here (closest thing to shark teeth I've got here) and throw in couple holocephali teeth. First is a nice Deltodus I prepped earlier in the year.

Second is another holocephali toothplate. It's nice, complete, and huge measuring in at 1.2 inches in length. I don't know the ID on this one and wouldn't want to geuss.

Close up 

Collected in Henry County, Missouri.

[Clint08]

On 12/30/2020 at 12:00 AM, JBMugu said:

Bakersfield Meg

Sweet tooth. Love matrix pieces and the color on that is stunning.

[Reebs]

Some of my most favorite teeth from 2020

 

       

[Reebs]

One of my fave megs of 2020 - I call her the rocket...

[hokietech96]

2 minutes ago, Reebs said:

One of my fave megs of 2020 - I call her the rocket...

Great finds!  Such nice teeth!

[Reebs]

@hokietech96 thank you!! I am very fortunate to live in an area with access to fabulous fossils.  I spent more time than ever in 2020 kicking around mud and it certainly payed off. 

[Reebs]

A few more 2020 teeth with nice colors for my area... 

[hokietech96]

19 minutes ago, Reebs said:

A few more 2020 teeth with nice colors for my area... 

 

 

Wow you had an amazing year!

[bthemoose]

40 minutes ago, Reebs said:

A few more 2020 teeth with nice colors for my area... 

 

Awesome finds! How big is that Hemi?

[Reebs]

1 hour ago, hokietech96 said:

Wow you had an amazing year!

Thank you kindly. feeling grateful. 

[Reebs]

44 minutes ago, bthemoose said:

Awesome finds! How big is that Hemi?

Thank you!! I’m not quite sure but it’s not 2” lol. I’m still working to cross a 2 inch Hemipristis off my bucket list. I’ll give ya a measurement when I get home. Cheers. 

[FLfossils]

[Bails]

Some incredible teeth in this thread!!! Thanks for sharing everyone!

[bthemoose]

23 hours ago, Reebs said:

Thank you!! I’m not quite sure but it’s not 2” lol. I’m still working to cross a 2 inch Hemipristis off my bucket list. I’ll give ya a measurement when I get home. Cheers. 

Too bad, I thought it might be!  Still looks like a nice one.

[Reebs]

3 hours ago, Bails said:

Some incredible teeth in this thread!!! Thanks for sharing everyone!

Agreed! Drooling over all these finds - thanks everyone for sharing! 

[sharko69]

Here is a Pleistocene Texas addition. A rare GW from the Beaumont Formation.

[WagnerFossilFinds]

Wow you all have such amazing finds!! Keep up the good work in 2021! 

[Bails]

Agreed some killer finds by everyone!

[Top Trilo]

Great colors too! Colorado is about as far away as you get from an ocean in the US (At least in the holocene) so I need to see all these amazing shark teeth. Wonderful sizes, colors, shapes, and species from all of these

[Archie]

On 1/1/2021 at 3:29 PM, bthemoose said:

Nice finds. I love the look of the Petalodonts! I’m curious if you or anyone else has a good illustration of how these teeth were arranged/looked in the shark’s mouth. That’s something I’ve been looking for but haven’t yet found. I’ve seen diagrams identifying the root, cutting blade, etc. but still can’t seem to visualize it for myself.

Agreed these are gorgeous, as are all the teeth posted here Heres one for Petalodus ohioensis and also for the Jannasidae taken from the Handbook of Paleoichthyology voume 3B: Elasmobranchii: Teeth (sorry for the terrible quality of the pics!). A lot of sources label Petalodonts as belonging to Holocephali but Holocephalan dentitions are characterized by slow growing tooth plates that werent replaced over time by new teeth, which the Petalodonts did. A friend and I are hoping to get some Petalodus acuminatus teeth from the Lower Carboniferous of Scotland scanned and 3D printed later this year to try and reconstruct a dentition, so will post results as soon as thats done  

 

 

 

[bthemoose]

Thanks, @Archie! I look forward to seeing your reconstruction. I found what looks like the same image as in your top photo just a few days ago in this article from Lucas et al. The authors of that make an interesting argument for a different dentition where the teeth occlude -- here's their figure from the paper:

 

Quote

FIGURE 3. Petalodus dental reconstructions. A, Jaw reconstruction proposed by Hansen (1996). B-D, Revised occlusion advocated here, based on NMMNH P-54584 and P-54585 in B, labial, C, lingual and D, lateral views.

 

[Archie]

1 hour ago, bthemoose said:

Thanks, @Archie! I look forward to seeing your reconstruction. I found what looks like the same image as in your top photo just a few days ago in this article from Lucas et al. The authors of that make an interesting argument for a different dentition where the teeth occlude -- here's their figure from the paper:

 

 

Brilliant article thanks @bthemoose! I'm definitely inclined to agree with this based on wear facets on some Petalodus weve found.

[ThePhysicist]

14 hours ago, sharko69 said:

Here is a Pleistocene Texas addition. A rare GW from the Beaumont Formation.

Wow. Is that from Galveston/Bolivar?

[siteseer]

9 hours ago, Top Trilo said:

Great colors too! Colorado is about as far away as you get from an ocean in the US (At least in the holocene) so I need to see all these amazing shark teeth. Wonderful sizes, colors, shapes, and species from all of these

 

There are sites for Late Cretaceous shark teeth where the Mancos Shale (Hotchkiss area?) and Juana Lopez Member of the Carlile Shale (somewhere around Pueblo) are exposed - probably a couple of other formations too.  I've seen the teeth.