Large bone chunk

[garyc]

I’m hoping someone can recognize what this chunk of bone might be from. It must be something large like Proboscidean  or sloth. The sutures are making me think it’s a chunk of skull. The concave side might be an alveolus for tusk?

[Brandy Cole]

Reminiscent of a jaw chunk to me, but it's just a gut feeling.

[Shellseeker]

Broken like a jaw.  but I think it is turtle or giant tortoise.. primarily off your 2nd photo

[Brandy Cole]

@Shellseeker I see it now.  That's how the suture lines look on a couple of my hesperotestudo pieces.

[garyc]

2 hours ago, Shellseeker said:

Broken like a jaw.  but I think it is turtle or giant tortoise.. primarily off your 2nd photo

I considered tortoise as well. It is just so much more robust than other chunks of tortoise that I have found. So, maybe the concave side is an articulation facet for a limb bone?

Edited October 15, 2022 by garyc

[Shellseeker]

5 minutes ago, garyc said:

I considered tortoise as well. It is just so much more robust than other chunks of tortoise that I have found

My maximum is 5-6 inches and for Hesperotstudo crassiscutata but I think they come bigger.  Lets check with @digit @Harry Pristis

[digit]

Easily that size for the giant tortoises. The shape and texture is reminiscent of one of these.

 

 

Cheers.

 

-Ken

[Brandy Cole]

Here's a hesperotestudo chunk I found for comparison.