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Ankylosaur osteoderm ?


Guns

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Hello ! This one is one of my first fossil . I bought it nearly about 6 mo ago as Partial Ankylosaur osteoderm (scute) from Hell creek formation , Montana .

I have a hard time distinguish it from ceratopsian frill :Cry: ... need help to confirm/correct ID on this bone and I wound love to know what is the main feature that distinguish Ankylosaur scute from Ceratopsian frill bone ?:ank:?

 

thank you in advance !

Guns

 

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it might be that this one has a few holesi n it... those might be ankylosaur traits rather than ceratopsian.... ?  @troodon?

 

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1 hour ago, jpc said:

it might be that this one has a few holesi n it... those might be ankylosaur traits rather than ceratopsian.... ?  @troodon?

 

thank you jpc!  i also have same idea as you.  but after searching in google for compare pic, i also saw some hole in ceratopsian frill... 

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fifbrindacier
37 minutes ago, Guns said:

thank for the help! really appreciate man!! 

That's the second time in one month someone call me man.:headscratch::)

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32 minutes ago, fifbrindacier said:

That's the second time in one month someone call me man.:headscratch::)

Allo fifi-

It was meant to have a comma and some more words:  "thank you for the help! I really appreciate it, man!! "  Man, in this case is slang and means friend, but it is much more than that.  It is a word suggesting emphasis.  Very difficult to explain to someone for whom English is not used everyday.  It has no gender.  I can't think of an example in French, because in French everything has a gender.  It would be like saying "C'est sympa, mon pote" but without a gender.  

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fifbrindacier
1 hour ago, jpc said:

Allo fifi-

It was meant to have a comma and some more words:  "thank you for the help! I really appreciate it, man!! "  Man, in this case is slang and means friend, but it is much more than that.  It is a word suggesting emphasis.  Very difficult to explain to someone for whom English is not used everyday.  It has no gender.  I can't think of an example in French, because in French everything has a gender.  It would be like saying "C'est sympa, mon pote" but without a gender.  

I agree, mon pote is a good traduction. You're right, i'm not used to that expression which i find touching. As you say, in french all has a gender. That's our  latin side.:)

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11 hours ago, fifbrindacier said:

That's the second time in one month someone call me man.:headscratch::)

oh i am sorry :Cry: it meant to mean as jpc said 

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fifbrindacier
3 hours ago, Guns said:

oh i am sorry :Cry: it meant to mean as jpc said 

Don't worry, i understood that was a kind manner of speaking. See my previous post.:D

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  • 2 weeks later...

I would lean against this being an Ankylosaurid osteoderm possibly more toward Ceratopsian.   I looked at about a couple of dozen osteoderms in my collection and although they had holes none matched yours.  They look more like foramen you see in Ceratopsian bones. 

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23 minutes ago, Troodon said:

I would lean against this being an Ankylosaurid osteoderm possibly more toward Ceratopsian.   I looked at about a couple of dozen osteoderms in my collection and although they had holes none matched yours.  They look more like foramen you see in Ceratopsian bones. 

thank you frank! so what do you think are the main features that distinguish Ankylosaur osteoderm from ceratopsian frill bone??? i have a hard time ID between that two.

 

thank you and glad to have you back! 

 

 

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You really need to get more complete osteoderms to be sure.  Partial bones can be difficult.  Veining is a key feature of frills.  They also are flatish and fat.

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4 minutes ago, Troodon said:

You really need to get more complete osteoderms to be sure.  Partial bones can be difficult.  Veining is a key feature of frills.  They also are flatish and fat.

thank you so much! 

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Agree with Frank. This looks more ceratopsian. Perhaps a frill piece? Here’s a picture of my ankylosaur osteoderm which shows the veining. It is possible that bc yours is so weathered much of these defining characteristics are missing. Yours does show some of these features if you “squint”. 

4D87D062-18FF-4AB1-9BCB-E4D1AC91BC28.jpeg

E53825F1-312F-48A8-8330-B7372B3958E8.jpeg

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16 hours ago, Dracarys said:

Agree with Frank. This looks more ceratopsian. Perhaps a frill piece? Here’s a picture of my ankylosaur osteoderm which shows the veining. It is possible that bc yours is so weathered much of these defining characteristics are missing. Yours does show some of these features if you “squint”. 

4D87D062-18FF-4AB1-9BCB-E4D1AC91BC28.jpeg

E53825F1-312F-48A8-8330-B7372B3958E8.jpeg

Hi! thank you a lot for the help and for the compare photo! look like anky osteoderm also have some veining and a lot of hole while ceratop frill have veining as a key feature and have a a few hole but not as much as Anky osteoderm... &

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