Show us your associated dentitions

[FF7_Yuffie]

1 hour ago, StevenJD said:

Phytosaurs from the Bull Canyon Formation of New Mexico, and a Ptychodus whipplei tooth plate from the Austin Chalk of Dallas County, Tx.

 

That top jaw is awesome. 

[Notidanodon]

13 hours ago, FF7_Yuffie said:

I'll post another, a  Mosasaur jaw section from Morocco. 

Nice jaw there

10 hours ago, Randyw said:

So many great sections and teeth! I’m hesitant to post mine but here are a couple of mine. 

very nice prep on those, don’t be afraid to post, this is for smaller jaws as well as @Troodons 

4 hours ago, StevenJD said:

Phytosaurs from the Bull Canyon Formation of New Mexico, and a Ptychodus whipplei tooth plate from the Austin Chalk of Dallas County, Tx.

The photosaurs are stunning but that ptychodus dentition is breathtaking 

[Notidanodon]

Seeing as people liked my previous ray palate here is another it’s not in quite so good nick but it is larger  this shows the chewing surface only as it’s in a. Box and I don’t want to take it out as it’s quite delicate 

[Shellseeker]

I guess a jaw with 2 teeth counts as "associated". It was as exciting a find as I have experienced.

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These measurements are less than half the reported sizes for Paramylodon harlani from Rancholabrea tar pits by Stock (1925). So that leaves two likely possibilities. Either it is from a juvenile or is the smaller species P. garbanii. If the teeth can be removed from the jaw, see if the size at the occlusal surface is substantially smaller than at the growing base of the crown or if the two are more or less the same. If the former, then it is from a juvenile. If the latter, then it is an adult of the smaller species.

The relative sizes of the two teeth is within the normal range for Paramylodon.

Richard

The 2 teeth are solidly in the jaw. I am unwilling to break it just to Identify the correct Sloth. So , I'll identify as Paramylodon .sp (possibly P. garbanii).

 

[JohnJ]

12 hours ago, StevenJD said:

Phytosaurs from the Bull Canyon Formation of New Mexico, and a Ptychodus whipplei tooth plate from the Austin Chalk of Dallas County, Tx.

 

 

 

This is really a cool dentition.  Are you confident that it is Ptychodus whipplei?  It looks more like Ptychodus mortoni to me.

 

@LSCHNELLE

 

[PaleoNoel]

I love this thread! So many awesome fossils.

Here's a Subhyracodon jaw I found this summer in the White River fm. in Wyoming. I was ecstatic when I found it!

What started out as a single tooth sticking out of the wall-

-Turned into a complete right mandible!

An elated Noel clearing away sediment.

[StevenJD]

6 hours ago, JohnJ said:

 

This is really a cool dentition.  Are you confident that it is Ptychodus whipplei?  It looks more like Ptychodus mortoni to me.

 

 

 

You are right @JohnJ, it is mortoni.  Don't know why I wrote whipplei. 

[LSCHNELLE]

12 hours ago, StevenJD said:

You are right @JohnJ, it is mortoni.  Don't know why I wrote whipplei. 

I think JohnJ is correct.  But, a view from above the dentition would eliminate other possibilities and it would be helpful to determine what form of Ptychodus mortoni it is.  According to Shawn Hamm, there are at least 12 forms of this species.  This one strikes me as being a more primitive adult form, because it is similar to the crossover new species (pending) from the Late Turonian.  I think that the difference is apparent in the more rounded rectangular form (no obvious wing-like margins) with a strongly concentric granular margin.  Often the granular margin has finer texture.   Also, the crown's bifurcating ridges may extend closer to the tooth edge in juvenile variations. 

 

If it was from the Late Turonian not Austin Chalk, I might have a different opinion. 

[StevenJD]

@LSCHNELLE thanks for the info.  I'll take some photos from above this weekend, and post them here. 

[Bobby Rico]

This Deer Jaw was given to me by Doren. He sent me a message later about it and I thought I would include here as I can’t in my head separate it from the sentiments and kindness that it represents .

 

Doren said ”Just to let you know, the deer jaw was from one of our late members that passed away last year Dominic Cioffi ( FossilClaw ). 

I purchased that from him very shortly before he died, so it can be considered a legacy piece.” 

Doren sent this to me a couple of weeks before he passed. It is a nice very specimen. 
 

the flamingo on the stand/diorama  are a place holder until I get some miniature deers .
 

[Top Trilo]

Great piece with an even greater story but charge your phone

[thelivingdead531]

29 minutes ago, Top Trilo said:

Great piece with an even greater story but charge your phone

I’m glad I’m not the only one who noticed that.  

[Bobby Rico]

1 hour ago, Top Trilo said:

Great piece with an even greater story but charge your phone

Haha brilliant. I really don’t why this happened but I was going to crop it out but your post made smile and as you know my phone was out of charge . 

[ziggycardon]

Here are my associated teeth.
 

Leptomeryx evansi jaw found in the Brule Formation, White River Group, Souix County ,Nebraska, USA (Oligocene, 33 - 30 mya)

 

A Ischyromys rypus jaw found in the Brule Formation, White River Group, Souix County, Nebraska, USA (Oligocene, 33 - 30 mya)

 

Megalagus turgidus jaw found in the Brule Formation, White River Group, Souix County, Nebraska, USA (Oligocene, 33 - 30 mya)

 

Palaeolagus heydeni found in the Brule Formation, White River Group, Souix County, Nebraska, USA (Oligocene, 33 - 30 mya)

 

Merycoidodon skull with associated jaws, found in the Meng Farm Site, White River Formation, Badlands of Nebraska, USA (Oligocene, 33 - 30 mya)

 

A Mesohippus bairdi jaw found in the Brule Formation, White River Group, Souix County, Nebraska, USA (Oligocene, 33 - 30 mya)

 

A tiny Anolis sp. jaw found in the Brooksville 2 site, Hernando County, Floridan, USA (Oligocene, 28 mya)

 

Mycterosaurus longiceps jaws found in the Dolese quarry, Richards Spur, Oklahoma, USA (Permian, 295 mya)

 

Captorhinus aguta jaw found in the Dolese quarry, Richards Spur, Oklahoma, USA (Permian, 295 mya)

 

Prognathodon jaw found in Khouribga, Morocco (Cretaceous, 70 mya)

 

Two associated Igdamanosaurus aegyptiacus teeth found in Khouribga, Morocco (Cretaceous, 70 mya)

 

[FF7_Yuffie]

Love that prognathodon jaw. Very cool.

[britishcanuk]

Here’s an associated set of Cretoxyrhina agassizensis teeth from Texas. Interestingly, 5 Squalicorax teeth and a small

Dwardius tooth were also found in the jumble of teeth, as well as two vertebrae. 

[Kiros]

My juvenile cave bear hemimandible from Austria

[paulgdls]

Simolestes pliosaur jaw with teeth:

 

 

[Masp]

2 hours ago, paulgdls said:

Simolestes pliosaur jaw with teeth:

 

 

Beautiful specimen

[StevenJD]

@LSCHNELLE

Here are some different views of the P. mortoni plate.

[LSCHNELLE]

2 hours ago, StevenJD said:

@LSCHNELLE

Here are some different views of the P. mortoni plate.

Great pictures! Thanks.  Beautiful specimen!

 

Definitely, it is Ptychodus mortoni.  It is similar to an associated set pictured in NMMNH Bulletin 81 - Figure 9 on page 10.  These are left laterals - in Figure 9 they are right laterals.  But, these are more rhombic in shape and less rounded on the crown edges than those in Figure 9.  I think that the coarser ridge pattern and coarser concentric pattern on the margins matches better the "crossover" new species from the Late Turonian than the "winged" form of the species.  So, same conclusion as earlier this week - a more "primitive" form of Ptychodus mortoni. 

[Bobby Rico]

2 hours ago, StevenJD said:

 

@LSCHNELLE

Here are some different views of the P. mortoni plate.

 

Very cool piece    

[Notidanodon]

Nice little fish palate

[Coco]

I thought Labrodon in Miocene from Touraine is L. pavimenatum... Are there several Labrodon species there ?

 

Coco

[Notidanodon]

8 hours ago, Coco said:

I thought Labrodon in Miocene from Touraine is L. pavimenatum... Are there several Labrodon species there ?

 

Coco

I’m not sure, I don’t know too much about fish species from there  maybe we could ask someone else