Spinosaur jaw?

[PaoloF]

 

Hello Friends,

Do you have any idea about this fossil from kem kem? Could it be a partial spinosaur jaw?

Looking for your valuable opinion.

 

Thank you in advance

Best

 

[Guns]

i think its a fake composited jaw . 

 

please wait to see what @Troodon @LordTrilobite have to say about this . 

 

Guns

[Troodon]

What you are looking at is a Crocodilian jaw nothing close or resembling one from a Spinosaurid

[LordTrilobite]

The anatomy does not fit any jaw.
I think this is carved bone.

[Troodon]

Yea I can buy its carved, good eye.

[pachy-pleuro-whatnot-odon]

15 minutes ago, LordTrilobite said:

The anatomy does not fit any jaw.
I think this is carved bone.

 

9 minutes ago, Troodon said:

Yea I can buy its carved.

 

Carved modelled on crocodile.

[Troodon]

When you are determining if a specimen is Spinosaurid always be looking for the ridge circled in my photo.    Croc jaw which are often sold has Spinosaurid do not have one like in your example.  There also can be lots of variation in a size of the alveoli depending on what part of the jaw you are looking at.   

 

 

 

[Haravex]

That piece of carved bone doesn't even look like it comes from the kem kem beds, I'm thinking most likely phosphate mines.

[PaoloF]

Thank you All so much

[jpc]

I see a rib drilled with nice round holes which are then refilled with glue and matrix.  

Edited January 30, 2023 by jpc

[Ginger0412]

Looks like a crocodile to me.

[jpc]

14 hours ago, Ginger0412 said:

Looks like a crocodile to me.

look at the photo of a croc jaw in troodon's post.  There is a slight concavity in between each tooth hole (alveolus).  The bone in question shows none of that.  Also croc jaws have distinctive croc texture along the outside surface... again, none is present.   And lastly, croc jaws do have bone that sticks out sideways, but it would be much further back toward the jaw joint than this one.   This bone is not what they are claiming.  

[Ginger0412]

2 minutes ago, jpc said:

troodon の投稿にあるワニの顎の写真を見てください。各歯の穴 (歯槽) の間にわずかな凹みがあります。問題の骨はそのどれも示していません。また、ワニのあごの外面に沿って独特のワニのテクスチャがあります... 繰り返しますが、何もありません。そして最後に、ワニの顎には横に突き出た骨がありますが、これよりも顎関節に向かってはるかに後方にあります. この骨は彼らが主張しているものではありません。  

 

That's all. I learned new things.

[jpc]

48 minutes ago, Ginger0412 said:

 

That's all. I learned new things.

That one of the things we do here on your friendly Fossil Forum.