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Unknown rib bone


Thunderchunky

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Thunderchunky

Hello, I have what I believe to be a fossilzed rib fragment from the peace river in florida. I thought it was a dewgong rib bone at first but on the busted side it seems to be "spongy" instead of completely solid.

16185008899164628800122193191501.jpg

16185009369998902937216431349702.jpg

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hadrosauridae

Bones are not solid.  Thats what the marrow of a fossilized bone looks like.  AS to species ID, I'm not familiar enough with the area to hazard a reliable guess.

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Fossildude19
43 minutes ago, hadrosauridae said:

Bones are not solid.  Thats what the marrow of a fossilized bone looks like.  AS to species ID, I'm not familiar enough with the area to hazard a reliable guess.

 

Although, dugong ribs are notoriously dense, lacking the spongy look. 

 

That said, I don't think that the bone can be identified to a genus or species. 

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Brett Breakin' Rocks
39 minutes ago, hadrosauridae said:

Bones are not solid.  Thats what the marrow of a fossilized bone looks like.  AS to species ID, I'm not familiar enough with the area to hazard a reliable guess.

Just to come to her defense @Thunderchunky . Dugong bones 'are' almost completely solid (do not exhibit large spongy texture) and common in her area (Peace River). The bones are used as ballast by the animals and show growth rings as they grow older/larger. Here is a good example of a rib in cross-section. 

 

So yes, not a Dugong bone but certainly a mammal rib of some sort. 

 

For reference, Dugong bone texture:

Image Credit: TFF User Plant Guy

Dugong_BoneFragments_Plant_Guy_TFF.thumb.jpg.6015f0a8c5ffb95baeae9f106b8ccffa.jpg

 

Image Credit: TFF User Mango

Dugong_Rib_Mango_TFF.jpg.01985fe6f5f6c93bdcdf61ae8dd61859.jpg

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hadrosauridae
3 hours ago, Brett Breakin' Rocks said:

Just to come to her defense @Thunderchunky . Dugong bones 'are' almost completely solid (do not exhibit large spongy texture) and common in her area (Peace River). The bones are used as ballast by the animals and show growth rings as they grow older/larger. Here is a good example of a rib in cross-section. 

 

So yes, not a Dugong bone but certainly a mammal rib of some sort. 

 

For reference, Dugong bone texture:

Image Credit: TFF User Plant Guy

Dugong_BoneFragments_Plant_Guy_TFF.thumb.jpg.6015f0a8c5ffb95baeae9f106b8ccffa.jpg

 

Image Credit: TFF User Mango

Dugong_Rib_Mango_TFF.jpg.01985fe6f5f6c93bdcdf61ae8dd61859.jpg

 

Wow, OK.  Theres my new thing I've learned for today!

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Brett Breakin' Rocks
16 minutes ago, hadrosauridae said:

 

Wow, OK.  Theres my new thing I've learned for today!

No worries... they are a funky bunch for sure. I used to toss the bones having mistaken them originally for some kind of in-filled burrow.  *face-palm*  haha ... :DOH:

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