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Brett Breakin' Rocks

Ground Sloth Phalanx ?

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Brett Breakin' Rocks

Hello Everyone,

 

  My treks to the river total 3 now and it is definitely a hit or miss sort of journey.  This is a very worn phalanx of some sort ?  Sloth possibly ... ?  I'm not sure it's just a wild guess based on what I have seen before and online.  @Harry Pristis @Shellseeker  My mammal id's are not comparable to those of my South Florida fossil hunter masters.

 

I apologize ahead of time these images are not my usual standard.  The bones were in a fresh water soak and were still drying ....

 

Size: 3 inches Long -- 1.5 inches wide

Phalanx_001.thumb.jpg.cc249143294db5d5f0dd69db4e58c4ac.jpgPhalanx_002.thumb.jpg.a38d5fa24d559f66d9cdd7828cbc2ad4.jpg

Phalanx_004.thumb.jpg.c74b5cd181c0be2ae81779f566e86153.jpg

Phalanx_005.thumb.jpg.55ea444cf235e6ccbb5d4187eb343f51.jpgPhalanx_003.thumb.jpg.fdf5e93999dd9efe4ff29c941d9cdb63.jpg

 

 

Thanks,

Brett

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Shellseeker

Brett,

I love sloth.  This one is a Sloth Medial phalanx.. http://www.thefossilforum.com/index.php?/gallery/image/10353-small-sloth-medial-phalanx/

WoW I just got a message that I did not have permission to see the contents of this link,  but I found/viewed it on the open internet.  What is going on ?

@Cris

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Brett Breakin' Rocks
Just now, Shellseeker said:

Brett,

I love sloth.  This one is a Sloth Medial phalanx.. http://www.thefossilforum.com/index.php?/gallery/image/10353-small-sloth-medial-phalanx/

WoW I just got a message that I did not have permission to see the contents of this link,  but I found/viewed it on the open internet.  What is going on ?

@Cris

Yeah .. that's odd.  You would think if you were signed in it would allow it.  Maybe it is trying to open the link in a default browser where you are not logged in ??

 

So, do you think this is a sloth phalanx .. it looks the part right ?  Not sure where it lies in the back or front of the animal.

 

Thanks again,

Brett

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Shellseeker
Just now, Brett Breakin' Rocks said:

Yeah .. that's odd.  You would think if you were signed in it would allow it.  Maybe it is trying to open the link in a default browser where you are not logged in ??

 

So, do you think this is a sloth phalanx .. it looks the part right ?  Not sure where it lies in the back or front of the animal.

 

Thanks again,

Brett

Cris has a great photo of the claw connected to the Medial Phalanx, which you have found here, connected to a proximal phalanx, which I tend to find. Here is a large proximal that I found 2-3 weeks ago and have not sorted/catalogued yet.IMG_2327.jpg.60886bc628d4a9a85c0f2e0bf18ec97f.jpgIMG_2330.thumb.jpg.833198097f26bdc53b40e55e5889dad4.jpg

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Brett Breakin' Rocks
5 minutes ago, Shellseeker said:

Cris has a great photo of the claw connected to the Medial Phalanx, which you have found here, connected to a proximal phalanx, which I tend to find. Here is a large proximal that I found 2-3 weeks ago and have not sorted/catalogued yet.

Whaa .. very cool.  I am amazed that they have survived so long being beat up and dragged from one location to the next over the millennia. This one that I have has a hole in it ... and the fossil has been hollowed out leaving a shell of what once was.

 

Thanks again for the examples guys.

 

Cheers,

Brett

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Shellseeker

Brett, Did I mention that Harry has fantastic photos also?   which I have just captured onto my local laptop

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-AnThOnY-
33 minutes ago, Shellseeker said:

Brett,

I love sloth.  This one is a Sloth Medial phalanx.. http://www.thefossilforum.com/index.php?/gallery/image/10353-small-sloth-medial-phalanx/

WoW I just got a message that I did not have permission to see the contents of this link,  but I found/viewed it on the open internet.  What is going on ?

@Cris

Mine has been doing that a bunch lately. Even to view a certain threads.

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Brett Breakin' Rocks
2 minutes ago, Shellseeker said:

Brett, Did I mention that Harry has fantastic photos also?   which I have just captured onto my local laptop

Yes,

 

    I'm slowly building my identification library.  We get quite a few locals here on FB that post images that are positively identified and I am saving these with the associated usernames that I can use in the future.  The internet is an amazing tool for our amateur endeavors.

 

  Speaking of Medial Phalanx ... hopefully this isn't an awful thing to ride on the ID of another.  This looks like a phalanx of an adult mammoth .. as opposed to the smaller one I found in Summerville. It's banged up a bit but some of the surface texture remains. I was surprised it survived the dredge.

 

 Most of what I find is indecipherable chunks ... that I admire from a distance.

 

Cheers,

 

 

  34774693_10215191960699837_2219611662321713152_n.jpg.cd2fec9a467f8258e707329328a31dfa.jpg

35196949_10215191960339828_177412647887568896_n.jpg.908d23d8d83d7abde7301b6e336a871a.jpg

35102338_10215191959739813_2649821253413634048_n.jpg.7899ca867c349c246c00af71e42b5f50.jpg

35077752_10215191959139798_6715605418007068672_n.jpg.48fd85a40a0188ed60460ee03915cf34.jpg
 

35051522_10215191959979819_7448444138556489728_n.jpg

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Shellseeker
14 minutes ago, Brett Breakin' Rocks said:

Yes,

 

    I'm slowly building my identification library.  We get quite a few locals here on FB that post images that are positively identified and I am saving these with the associated usernames that I can use in the future.  The internet is an amazing tool for our amateur endeavors.

 

  Speaking of Medial Phalanx ... hopefully this isn't an awful thing to ride on the ID of another.  This looks like a phalanx of an adult mammoth .. as opposed to the smaller one I found in Summerville. It's banged up a bit but some of the surface texture remains. I was surprised it survived the dredge.

 

 Most of what I find is indecipherable chunks ... that I admire from a distance.

 

Cheers,

B

 

35196949_10215191960339828_177412647887568896_n.jpg.908d23d8d83d7abde7301b6e336a871a.jpg

 

I am not sure about that smaller bone on the right. @Harry Pristis educated me on this also.  NOT a phalanx,

Hopefully, you will enjoy the Mastodon foot photo is THIS thread

http://www.thefossilforum.com/index.php?/topic/81307-fossil-or-rock-blobs/

 

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Brett Breakin' Rocks
34 minutes ago, Shellseeker said:

I am not sure about that smaller bone on the right. @Harry Pristis educated me on this also.  NOT a phalanx,

Hopefully, you will enjoy the Mastodon foot photo is THIS thread

http://www.thefossilforum.com/index.php?/topic/81307-fossil-or-rock-blobs/

 

metapodial .. got it.  Thanks for the resources, I have some reading to do ...

 

Cheers,

Brett

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Shellseeker
2 hours ago, Harry Pristis said:

For comparison:

 

 

sloth_claw_artic_R.jpg

@Harry Pristis,

Sorry to keep pulling you back into this, but I just realized something for the 1st time. I was cleaning and photographing the above Sloth Proximal Phalanx prior to identification and storage. This bone has serious muscle attachment scars on one side, not the other, which means whether this bone was on the left or right side of the animal is determined. Thinking of my human digits,  I think that this bone came from a right side appendage. Is this correct, and if so, can one differentiate between an "arm" and "foot" based on more extensive muscle scaring on the "arm" due to use? Also , does similar asymmetric muscle attachment scaring occur on other mammal finger and toe digits?

Thanks for any insights.  jack

IMG_2336.jpg.150d02b75bdc7f585540272c6446d5ed.jpgIMG_2339.thumb.jpg.f1e6ae6fabe2630f31cefdedb953f3a8.jpg

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Harry Pristis

 

I dunno, Jack.  I've never paid a lot of attention to muscle attachments on these bones except how they may fit putative matches.  I find it easier to find fits starting with the claw.  The pedal clawsl are straight, while the claws of the manus are hooked.  

 

 

sloth_toesA.JPG

sloth_toesB.JPG

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Shellseeker
41 minutes ago, Harry Pristis said:

 

I dunno, Jack.  I've never paid a lot of attention to muscle attachments on these bones except how they may fit putative matches.  I find it easier to find fits starting with the claw.  The pedal clawsl are straight, while the claws of the manus are hooked.  

 

 

sloth_toesA.JPG

sloth_toesB.JPG

Thanks, Harry

I was/am about to step off and search for the answer(s) to my questions and sometimes (maybe many times) you have already done the work and know the answers and saw some reference in a paper or book. I'll try to go after this one and feedback anything I find. 

Looking at one of @Fruitbat references, I found this. DigitIVproximalphalanxMegalonyxJeffersonii1968FloridaStateBulletin.JPG.aee1e65ea4bbc66f81da4391774c2bb1.JPG

My Proximal Phalanx is from Megalonyx Jeffersonii, IV digit.  The one in the picture above is 62.3 mm, mine is 63.5  - close enough. It seems that you have a couple in your boxes, 1st box lower right; 2nd box upper left. Curiosity on whether the one inlower right 1st box has any obvious muscle attachment difference.

I'll work the internet and Fruitbat's library and then likely send a note to Hulbert.

Thanks for your response. This was news to me: 

Quote

The pedal claws are straight, while the claws of the manus are hooked.

Jack

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