Jump to content
Dinobot

Tyrannosaurus rex or nano femur??

Recommended Posts

Dinobot

Hi there! I recently purchased this online, could you please help identify this? the seller was unsure if it was a juvenile trex or a nano.  It was found in Hell creek dawson County east of Glendive Montana 

 

Thank you :)

20201123_135938.thumb.jpg.60b14592d5e3896948792da86c702e46.jpg20201123_140014.thumb.jpg.a431ce1d9fae1c7f09b5ef9c41040f58.jpg20201123_140027.thumb.jpg.dcc661b4691e9dc07f07f23053b8aa79.jpg20201123_140050.thumb.jpg.7a676e661e2e3e565de558dbe95d2be6.jpg20201123_135924.thumb.jpg.24a2793b7f708c1e234bb41c1388ef9d.jpg20201123_140014.thumb.jpg.a431ce1d9fae1c7f09b5ef9c41040f58.jpg20201123_140121.thumb.jpg.b3149fc8ddf00ca094be9e91441ff9ae.jpg20201123_140142.thumb.jpg.5ebe4127107393b7b85a59a6b9e1fe4d.jpg

20201123_140107.jpg

Share this post


Link to post
Share on other sites
jpc

I'm going to leave this one to troodon.

Share this post


Link to post
Share on other sites
Troodon

Can you take a photo straight down of this view.  Need to see the location of the 4th trochanter with respect

to the end condyles.  Also a straight in view of the broken end.  What is the length of what you have ? 

20201123_140142.jpg.a610cdc237f1a1743501b39b4bfb2da5.thumb.jpg.e2a3829960106987886cbd86f3ae7f43.jpg

Share this post


Link to post
Share on other sites
Dinobot
On 11/26/2020 at 12:58 PM, Troodon said:

Can you take a photo straight down of this view.  Need to see the location of the 4th trochanter with respect

to the end condyles.  Also a straight in view of the broken end.  What is the length of what you have ? 

20201123_140142.jpg.a610cdc237f1a1743501b39b4bfb2da5.thumb.jpg.e2a3829960106987886cbd86f3ae7f43.jpg

I haven't received the piece yet and because its an international shipment, it doesn't look like I will get it until early January. I can post pictures then :)....based on the photos the full length of the piece is between 16 and 18 inches.

Share this post


Link to post
Share on other sites
Troodon

Thanks I will need the additional photos because:

I actually think it looks more like a proximal tibia and is it Tyrannosaurid or a Herbivore like Edmontosaurus 

On the broken end I'm trying to determine medullary cavity is hollow and filled with rock/matrix , or is it solid bone?  The former says Tyrannosaurid.  That end looks more solid but photos are not adequate 

Share this post


Link to post
Share on other sites
SULLY

I was told it was full of matrix and rock for whatever that’s worth.

Share this post


Link to post
Share on other sites
Troodon
10 minutes ago, SULLY said:

I was told it was full of matrix and rock for whatever that’s worth.

Okay thats good but like to see solid evidence of that

Share this post


Link to post
Share on other sites
SULLY

Yes sir. I don’t have any more pictures other than the person that started this post unfortunately. I almost lucked out and got this one :DOH:

Share this post


Link to post
Share on other sites
Dinobot

@Troodon @SULLY

 

It arrived early :)

 

Here are some additional photos, the matrerial in the center of the bone (at the break) was coming out fairly easy with a pick. The entire length of the piece is just over 16 inches.  

 

20201207_120544.thumb.jpg.05962cd9fe4665ffabe2a968a34f9224.jpg20201207_120520.jpg.7b5b34627bfdab860c0c73a1fe9de388.jpg20201207_120410.thumb.jpg.efdae4d94e6008461fbf85bbb50bdfd8.jpg

Share this post


Link to post
Share on other sites
Dinobot

I took a magnified photo I'm not sure if that will help.

Screenshot_20201207-115709_Gallery.thumb.jpg.1b5c0079f297e709076517e58e5a3784.jpg

Share this post


Link to post
Share on other sites
Dinobot

@Troodon, @jpc, @SULLY

I reached out to university of Alberta and this is what they had to say,

 

 "It ia hard to tell for certain, but it looks like either a femur or a tibia. In either case the proximal articular surface seems broken (hence my hesitancy in choosing one way or another). As for if it is theropod, it still could be given how round it is. Hadrosaur and ceratopsian femora tend to be more square ish in cross section.....

No worries! Although "hollow" the degree to which that is true is less extreme than in birds and small theropod dinosaurs. I find that bone density (how compact it looks) can be more reliable for large theropods like tyrannosaurs. There is a small hollow core on the specimen you photographed and the bone around it looks tightly packed so I think there is a good chance the initial diagnosis was correct."

Share this post


Link to post
Share on other sites
SULLY

Perf 
 

:thumbsu:

 

That was weird. It’s supposed to say perfect 

 

Perfect 

 

:thumbsu:

 

Now we’re good.  :heartylaugh:

Share this post


Link to post
Share on other sites
Dinobot

:)

Share this post


Link to post
Share on other sites
Dinobot

My apologies Troodon I hope this didn't take too much time away from your recovery.   In either case thank you very much for your time and input.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Recently Browsing   0 members

    No registered users viewing this page.

×