Show us your oligocene/white river fossils

[ParkerPaleo]

14 hours ago, Nimravis said:

Leptomeryx lower jaw-

 

 

Lizard Jaw-

 

 

Insectivore Jaw-

 

 

 

The lizard jaw appears to have 'tricuspid' teeth, which is indicative of Iguanids (like my Aciprion I posted)

[Nimravis]

27 minutes ago, ParkerPaleo said:

The lizard jaw appears to have 'tricuspid' teeth, which is indicative of Iguanids (like my Aciprion I posted)

Thanks much Tim. I see you will be at MAPS, is your dad coming too?

[AlaskaNick]

Little white river Oreodont upper I prepped a while back 

[Nimravis]

I came across a couple pictures from 3 years ago of my (at the time 5 year old) grandson having fun trying to prep and upper Oreodont skull.

 

 

 

 

 

 

[ParkerPaleo]

6 hours ago, Nimravis said:

Thanks much Tim. I see you will be at MAPS, is your dad coming too?

That's the plan for now.  We should both be there again.

[siteseer]

15 hours ago, Nimravis said:

I came across a couple pictures from 3 years ago of my (at the time 5 year old) grandson having fun trying to prep and upper Oreodont skull.

 

 

 

 

 

 

 

Ralph,

 

I know two fossil dealers who will hire your grandson immediately.  The second reason is because he's clearly focused on the job.  The main reason is he's got his safety glasses on.  I tell people I put my safety glasses on even when I'm just thinking about fossil prep.  On two different occasions I was prepping with a scalpel and the tip broke off and bounced off a lens of my safety glasses.  Always wear safety glasses when prepping!

 

Great work, kid.  Great work, Grandpa.

 

Jess

[Nimravis]

15 minutes ago, siteseer said:

 

Ralph,

 

I know two fossil dealers who will hire your grandson immediately.  The second reason is because he's clearly focused on the job.  The main reason is he's got his safety glasses on.  I tell people I put my safety glasses on even when I'm just thinking about fossil prep.  On two different occasions I was prepping with a scalpel and the tip broke off and bounced off a lens of my safety glasses.  Always wear safety glasses when prepping!

 

Great work, kid.  Great work, Grandpa.

 

Jess

Thanks Jess, that is what I tell him, unfortunately he is not in to fossils right now, head would much rather play football and baseball, but I keep my fingers crossed.

[siteseer]

Here's something weird for this thread.  It's an anthracothere incisor - might belong to Bothriodon.  Anthracotheres were primitive artiodactyls that immigrated from Asia into North America in the late Eocene.  They didn't get very diverse in North America and their remains are rare.  Two genera survived into the Early-Middle Miocene.  To modern eyes, they would have been a strange sight unlike anything today - perhaps vaguely pig-like and two genera might have had a hippo-like lifestyle - often in and around rivers.  Hippos appear to be the only modern relatives of anthracotheres.

 

Bothriodon?

Early Oligocene

Brule Formation

Pennington County, South Dakota

 

Crown height: 14mm

[ParkerPaleo]

On 7/16/2022 at 3:53 AM, siteseer said:

Here's something weird for this thread.  It's an anthracothere incisor - might belong to Bothriodon.  Anthracotheres were primitive artiodactyls that immigrated from Asia into North America in the late Eocene.  They didn't get very diverse in North America and their remains are rare.  Two genera survived into the Early-Middle Miocene.  To modern eyes, they would have been a strange sight unlike anything today - perhaps vaguely pig-like and two genera might have had a hippo-like lifestyle - often in and around rivers.  Hippos appear to be the only modern relatives of anthracotheres.

 

Bothriodon?

Early Oligocene

Brule Formation

Pennington County, South Dakota

 

Crown height: 14mm

These have been really elusive in my collecting, I only have a handful of teeth in the collection.  Perhaps they are more common in South Dakota where I don't get to hunt as much.

[siteseer]

4 hours ago, ParkerPaleo said:

These have been really elusive in my collecting, I only have a handful of teeth in the collection.  Perhaps they are more common in South Dakota where I don't get to hunt as much.

 

From what I've seen, anthracothere remains are rare anywhere in North America.  I have always looked for unusual mammal specimens at shows and haven't seen much.  I've hunted a couple of ranches in northwestern Nebraska just a couple of times.  I have just that incisor and a premolar from the Early-Middle Miocene of Texas.  I'll post photos of that maybe by the end of the month.  Other than those, I have three Oligocene teeth from the Isle of Wight.

 

That maxilla piece that Larry has in his mammal thread is incredible.  I've never seen anything like that for sale or trade.

Edited July 18, 2022 by siteseer
word choice

[siteseer]

Here's a Perchoerus jaw section just under 3 inches long (approx. 77mm).  Perchoerus is an extinct genus of peccary known from the Oligocene of North America. (sites in Nebraska and South Dakota as examples).  Its fossils are rare with most finds being isolated teeth and jaw sections.  I have read that it's still not known from a complete skeleton.

 

I don't have a locality for this one but the collector's other South Dakota finds were labelled as coming from Shannon County.

 

Perchoerus probus
Oligocene
Brule Formation
Shannon County (?), South Dakota

[fossilhunter21]

On 7/13/2022 at 3:59 PM, EvolEd said:

I absolutely love White River Fossils as well. I have a few partial skulls in my collection and recently caved and purchased this small Dinictis partial skull. It unfortunately has a broken sabre and I've been unable to track down a single complete sabre for display purchases. I was able to get in touch with the notoriously difficult to get in touch Kent Sundall for the first time ever but he said they were incredibly rare and he didn't have anything in stock. And my follow up questions about any other dream species I'd like to add in some shape or form (i.e. a bear dog or hyaenodon) were met with silence  I was able to track down a Hoplophoneus sabre tip; it will have to do for now.

 

Apparently, this Dinictis specimen was collected by a well-known paleontologist named Frank Garcia and it's the smallest example he's ever found. There is the only one decent side with a partial molar and the partial sabre but it's probably the only Dinictis specimen I will ever be able to afford. Thanks for sharing everyone. 

 

Cheers

Marcus

Very cool!!! It may be not very complete, but it is still an amazing piece!

 

Thanks for sharing!

 

-Micah

Edited July 31, 2022 by fossilhunter21

[fossilhunter21]

On 7/13/2022 at 9:10 PM, Nimravis said:

This is not the prettiest piece, but I still like it- Hyaenodon.

 

 

 

 

 

 

 

Awesome piece! I like wierd fossils like that one almost as much as the complete ones, they just are so interesting to look at!

 

Thank you for sharing! 

 

-Micah

[fossilhunter21]

On 7/14/2022 at 6:15 PM, Nimravis said:

Leptomeryx lower jaw-

 

 

Lizard Jaw-

 

 

Insectivore Jaw-

 

 

 

Those are some cool little jaws! My favorite is the lizard jaw.

 

Thank you for sharing!

 

-Micah

[fossilhunter21]

On 7/15/2022 at 10:28 AM, AlaskaNick said:

Little white river Oreodont upper I prepped a while back 

Nice job on the prep and display! Oreodonts are really fun to prep, and they are cool to look at.

 

Thanks for sharing!

 

-Micah

[fossilhunter21]

On 7/15/2022 at 12:55 PM, Nimravis said:

I came across a couple pictures from 3 years ago of my (at the time 5 year old) grandson having fun trying to prep and upper Oreodont skull.

 

 

 

 

 

 

He might not be interested in fossils right now, but it looks like he had fun with that skull! And who knows, maybe he will become interested in fossils again. 

 

Thank you for sharing!

 

-Micah

[fossilhunter21]

On 7/16/2022 at 4:53 AM, siteseer said:

Here's something weird for this thread.  It's an anthracothere incisor - might belong to Bothriodon.  Anthracotheres were primitive artiodactyls that immigrated from Asia into North America in the late Eocene.  They didn't get very diverse in North America and their remains are rare.  Two genera survived into the Early-Middle Miocene.  To modern eyes, they would have been a strange sight unlike anything today - perhaps vaguely pig-like and two genera might have had a hippo-like lifestyle - often in and around rivers.  Hippos appear to be the only modern relatives of anthracotheres.

 

Bothriodon?

Early Oligocene

Brule Formation

Pennington County, South Dakota

 

Crown height: 14mm

Very interesting! I did some research, and it looks like it was a pretty large animal (439 pounds). I don't think that I would want to come across one of these if they were still living.

 

-Micah

 

[fossilhunter21]

3 hours ago, siteseer said:

Here's a Perchoerus jaw section just under 3 inches long (approx. 77mm).  Perchoerus is an extinct genus of peccary known from the Oligocene of North America. (sites in Nebraska and South Dakota as examples).  Its fossils are rare with most finds being isolated teeth and jaw sections.  I have read that it's still not known from a complete skeleton.

 

I don't have a locality for this one but the collector's other South Dakota finds were labelled as coming from Shannon County.

 

Perchoerus probus
Oligocene
Brule Formation
Shannon County (?), South Dakota

Cool little jaw! You have a lot of specimens from interesting animals!  

 

Thanks for sharing!

 

-Micah

[siteseer]

20 hours ago, fossilhunter21 said:

Cool little jaw! You have a lot of specimens from interesting animals!  

 

Thanks for sharing!

 

-Micah

 

Thanks.  I've had a knack for noticing fossils at shows that are out-of-the-ordinary and have been lucky in the field.  It helps that my brother has taken some fantastic photos of even the smaller specimens.

[siteseer]

@fossillarry sent me a photo of an anthracothere left m3 (lower third molar) from the Early Oligocene (Orellan) of South Dakota, a site near Interior.  He wasn't sure of the genus.  The tooth is 45.7mm long by 19.0mm wide.

 

He loves this thread since Badlands mammals are some of his favorite fossils.

[Raptor9468]

Newbie collection

Oreodont:Made some scratches while trying to remove the matrix on the left side,not too proud of it but I think it looks cool. 

 

Mesohippus:

Really small jaw section that I have

[siteseer]

@fossillarry sent me several photos and I will be posting them starting with this one.  On the left side are a maxilla section and lower jaw section of Thinohyus, an early peccary.  The maxilla piece on the right side is from another early peccary genus, Perchoerus.  They are the M1-M2.

 

All these fossils are Early Oligocene (Orellan Land Mammal Age) from a site in South Dakota.

Edited August 25, 2022 by siteseer

[siteseer]

@fossillarry considers this his best Perchoerus specimen.  It's a nice maxilla piece  from the Brule Fm (Orellan) and was found near the town of Scenic, SD. 

[jpc]

nice specimens.  (Blurry pix). 

 

[siteseer]

This is a left maxilla fragment of Agriochoerus, a genus in the Family Agriochoeridae which is related to oreodonts (Oreodontidae), both being in the Superfamily, Oreodontoidea.  This specimen consists of P4-M3.  It is from the Orellan of Sioux County, Nebraska.