Worn ornithopod tooth or tiny rock?

[ADfossils]

Hello!
 

I found this ´thing’ in the Tithonian layers of the Boulonnais region (North West of France) a few weeks ago:
 

 

I was thinking that it looked a bit like those worn iguanodon teeth from Hastings (UK).

 

 

Then I did some digging, and it turns out that a few iguanodontid ornithopods worn teeth have actually been found in the Tithonian layers of the Boulonnais in the past:

 

 

What do you think? Worn teeth or just a suggestively shaped pebble?

 

Thank you!

[dinoshark]

my two cents is that this looks like a pebble, unfortunately. i've found hadrosaur and iguanodontid teeth before, though given they aren't worn much so the details of the enamel are clearly identifiable. but if given the benefit of the doubt and this is a worn tooth, i'm having a hard time recognizing any distinctive shapes for iguanodontid teeth here. 

what is making me more inclined to say pebble is actually in the flake marks seen in picture three, four and six. 

if worst comes to worst, a pressure test will answer this question, to the detriment of the specimen though. most dinosaur teeth aren't very hard or sturdy, and can easily fracture and crumble with firmer pressures, but pebbles would hold their structural integrity to much higher pressures. 

[patelinho7]

I think sharper, zoomed-in photos are in order, without fingers and hands. Even more light if possible. I think there is a decent chance it could be a tooth, based on the provenance and the paper you provided. I’ve seen worse looking “pebbles” that turn out to be teeth. It could be a fragmentary worn tooth. We just need better photos, I think.

 

I don’t recommend damaging the specimen in case it’s a tooth.

[sjaak]

Hard to see, but I’m afraid this is a pebble.