Capybara, maybe sloth

[Shellseeker]

Last August, I found a broken bone.  The unbroken part reminded me of a Rhino astragalus.

 

I posted a Fossil_ID thread but not much feedback, The following week I did some internet searching for fossil astragali... and found this one for sale by @PrehistoricFlorida.  I thought that I found an ID match !!! This Capybara astragalus has many characteristics of Rhino , also

 

Cutting to the chase,  a member PMed me on some of my Capybara finds Friday and I started searching the internet . 

 

I found another fossil on @prehistoricflorida 's website..  This time an Eremotherium fossil. 

Did you get a good look at this 3 inch Eremotherium medial phalanx,  compared to my August find.... Could it be Sloth rather than Capybara?

 

and by the way.... here is a look at the bones in a sloth claw... and the bone next to this claw (P. harlani ??) is also a Sloth medial phalanx   !!!!

 

Some times you have to take a circuitous route to a fossil ID... So what say you?  Did I find Capybara or Eremotherium or something else?

[Meganeura]

It feels too broken to me to get a for sure ID - but I'd definitely be leaning more towards Eremotherium here, it just doesn't look like an astragalus to me!

[Shellseeker]

14 hours ago, Meganeura said:

It feels too broken to me to get a for sure ID - but I'd definitely be leaning more towards Eremotherium here, it just doesn't look like an astragalus to me!

 When I have a broken bone, unlikely to be Identified, I can become a ball in a pinball machine,  bouncing off the bumpers while I learn things about the possibilities I think about...

So,  BOTH Nate and Harry have bones that they have identified as an Eremotherium medial phalanx.  Below is Harry's... The bones do not look the same to me.  Can they both be Eremotherium medial phalanx?

 

There were 2 species of Eremotherium ( Eomigrans in the Blancan and Laurilardi in the Pleistocene).  Do the 2 species of sloth have different looking medial phalanx?

Then I looked at the UF MNH website and found this eomigrans foot bones photo..   Hold it ...  there is a medial phalanx for each digit and all 4 look different and have different sizes...  I think that @Harry Pristis medial phalanx (above) may be the the medial phalanx for digit 3.

 

I think that E. laurillardi has 2 claws (3rd and 4th)  but yet to confirm....and picked up some of this new knowledge, just because I wanted to ID a broken bone....

 

[Harry Pristis]

Here's another view of my eremothere medial phalanx:

 

 

Compare the general shape of the eremothere to the (probable) megalonychid medial phalanx from Bolivia.

[Shellseeker]

17 hours ago, Harry Pristis said:

Here's another view of my eremothere medial phalanx:

Thanks , Harry..

I am going to continue poking/searching the net ... Great photos...  The Medial Phalanx for the 3rd digit seems to be pretty similar whether on Pliocene E. eomigrans (above photo) or late Pleistocene E . laurillardi  (below photo of both hand/feet)...

 

It is possible that Nate's Sloth Medial Phalanx is from the 2nd digit of E. laurillardi... but I'll need better example photos and will post as I find them.

[Shellseeker]

22 hours ago, Harry Pristis said:

Here's another view of my eremothere medial phalanx:

Harry,

I am see the elongated edge in the Megalonychid  in the Medial phalanx for E. eomigrans,  but not on Laurillardi  !! 

PURE SPECULATION...

Your Medial Phalanx may be from  E. Laurillardi.

and, maybe the 2 species may be identified by their respective Medial phalanx...

but also, I may have taken too many meds this evening....   Need more examples... @digit