Extraordinary Common Teeth

[Untitled]

1 minute ago, isurus90064 said:

Not really a common tooth, but keeping it all in one thread.

 

From the iron ore mines near Stary Oskol

 

Cardabiodon vraconensis

 

~" - cm

 

~113 - 100 Ma

Lower Cretaceous - Upper Albian
Seversk Sandstone

Stary Oskol

Belgorod Oblast

Russia

 

Beautiful tooth!  I believe that Siversson mentioned awhile ago that most of these Russian teeth are actually described as Dwardius if memory serves correctly

[Untitled]

Cretalamna schoutedeni from Morocco

[Untitled]

Following suit on Russian teeth posted earlier is an interestingly shaped Cretoxyrhina mantelli from the Ryazan Region.

[isurus90064]

1 hour ago, Untitled said:

Beautiful tooth!  I believe that Siversson mentioned awhile ago that most of these Russian teeth are actually described as Dwardius if memory serves correctly

 

I believe he did as well, and thanks for catching that. Nice Cretalamna/Cretox teeth!!

[isurus90064]

Here's a very very large shamer of a Cretodus tooth.

 

~2.36" - 5.99cm

 

~92 Ma

Upper Cretaceous - Turonian

Kamp Ranch Formation

Eagle Ford Group

Dallas County, TX

 

[fossilsonwheels]

We just found this one. I am pretty stoked. Not the prettiest tooth but our largest Cretoxyrhina. It is our largest Mesozoic tooth and should be a hit with the kiddos.

2.2" Niobrara Chalk

 

[fossilsonwheels]

On 9/6/2019 at 2:09 AM, isurus90064 said:

Here's a very very large shamer of a Cretodus tooth.

 

~2.36" - 5.99cm

 

~92 Ma

Upper Cretaceous - Turonian

Kamp Ranch Formation

Eagle Ford Group

Dallas County, TX

 

That is an absolute MONSTER ! Fantastic tooth

[fossilsonwheels]

On 9/5/2019 at 7:35 PM, isurus90064 said:

Not really a common tooth, but keeping it all in one thread.

 

From the iron ore mines near Stary Oskol

 

Dwardius woodwardi

 

~1.37" - 3.48cm

 

~113 - 100 Ma

Lower Cretaceous - Upper Albian
Seversk Sandstone

Stary Oskol

Belgorod Oblast

Russia

 

Gorgeous tooth !! i have yet to find a Cardabiodontid for my collection so I would say this is drool worthy lol

[fossilsonwheels]

My prettiest Cretoxyrhina. Also from Kansas. This one came from @Troodon 

[isurus90064]

@fossilsonwheels

Fantastic Cretox examples! last one is cherry!

[isurus90064]

Cretoxyrhina mantelli

 

~2.22" - 5.64cm

 

~87 - 82 Ma

Upper Cretaceous

Smoky Hill Chalk Member

Niobrara Chalk Formation

Lane County, KS

 

[fossilsonwheels]

47 minutes ago, isurus90064 said:

Cretoxyrhina mantelli

 

~2.22" - 5.64cm

 

~87 - 82 Ma

Upper Cretaceous - Campanian

Smoky Hill Chalk Member

Niobrara Chalk Formation

Lane County, KS

 

Fantastic ! That is a wicked tooth

[fossilsonwheels]

I am pretty sure this one is undescribed and not common but I saw some Bramble Shark teeth in the thread. This looks very similar to some French and Argentinian teeth that are also Cretaceous. 

 

Echinorhinus sp

Upper Cretaceous 

Council Quarry Pit

Queensland, Australia 

[Troodon]

7 hours ago, fossilsonwheels said:

I am pretty sure this one is undescribed and not common but I saw some Bramble Shark teeth in the thread. This looks very similar to some French and Argentinian teeth that are also Cretaceous.  

Check this out

[fossilsonwheels]

3 hours ago, Troodon said:

Check this out

Awesome. Thank you Frank. I think I feel pretty comfortable identifying mine as Echinorhinus australis based on this information. 

[isurus90064]

Good to see you here Frank.

 

@fossilsonwheels The reference Frank is quoting is also mentioned in the attached article (page 3, last paragraph, and page 4 first paragraph).

 

Jou1992_v13_n1_p015_2.pdf

 

 

[fossilsonwheels]

31 minutes ago, isurus90064 said:

Good to see you here Frank.

 

@fossilsonwheels The reference Frank is quoting is also mentioned in the attached article (page 3, last paragraph, and page 4 first paragraph).

 

Jou1992_v13_n1_p015_2.pdf

 

 

That is very informative. Thank you very much for the additional literature on this one. 

[fossilselachian]

Another Cretoxyrhina from Kansas. May be a repost?

[isurus90064]

Haven't seen that tooth, that is by far the nicest one I've seen in a long time, both size and quality, congrats!!

[isurus90064]

It takes a lot of teeth to get to that one really good one, starting here ...

 

Cretodus semiplicatus

 

~100 - 94 Ma

Late Cretaceous - Cenomanian

"Amon Carter Field"

Woodbine Formation

Tarrant County, TX

 

[fossilsonwheels]

On 8/3/2019 at 9:34 PM, isurus90064 said:

Pelagiarctos thomasi

 

Top row, left to right:

~1.77" - 4.50cm

~1.55" - 3.92cm

~1.61" - 4.09cm

 

Bottom row, left to right:

 

~1.31" - 3.33cm

~1.23" - 3.12cm

~1.90" - 4.83cm

"Sharktooth Hill"
~15.5 Ma
Middle Miocene
Roundmountain Silt
Bakersfield, Kern County
CA

 

All of your Peliagiarctos thomasi teeth are just awesome. We are doing a marine mammal education program in the near future which will be primarily focused on STH material. It is pretty cool to see the variety of teeth from this species. Thanks for this thread and all of your posts in it. Very fun and informative 

[isurus90064]

...continuing here ...

 

Cretodus semiplicatus

 

~100 - 94 Ma

Late Cretaceous - Cenomanian

"Amon Carter Field"

Woodbine Formation

Tarrant County, TX

 

[isurus90064]

... and the really crappy ones ...

 

Cretodus semiplicatus

 

~100 - 94 Ma

Late Cretaceous - Cenomanian

"Amon Carter Field"

Woodbine Formation

Tarrant County, TX

 

[isurus90064]

... to get to this one ...

 

Cretodus semiplicatus

 

~100 - 94 Ma

Late Cretaceous - Cenomanian

"Amon Carter Field"

Woodbine Formation

Tarrant County, TX

 

[isurus90064]

10 hours ago, fossilsonwheels said:

All of your Peliagiarctos thomasi teeth are just awesome. We are doing a marine mammal education program in the near future which will be primarily focused on STH material. It is pretty cool to see the variety of teeth from this species. Thanks for this thread and all of your posts in it. Very fun and informative 

 

Thank you! In case you're interested, Bobby Boessenecker from the forum here has written a couple of papers on P. thomasi:

 

"A Reevaluation of the Morphology, Paleoecology, and Phylogenetic Relationships of the Enigmatic Walrus Pelagiarctos"

 

as well as:

 

"Enamel ultrastructure of fossil and modern pinnipeds: evaluating hypotheses of feeding adaptations in the extinct walrus Pelagiarctos"

 

Instead of posting links here (which will invariably stop working at some point or will not work because you may have to log in somewhere), it's easy to start an account on researchgate.net for example and find the free downloads of those texts. Let me know if that works.