Is this a bone?

[Tamateur]

Hi,Could anyone help with this?It was found in Scotland close to a large fossilised Lepidodendron tree.Thank you

[Fossildude19]

Welcome to the Forum. 

 

Looks more like an ironstone concretion, to me. 

 

@Archie

[val horn]

If you really want to test it then break off a piece of the bone and look at the internal  composition  if it is bone embedded in ironstone the internal surface should look like bone  ie compact bone on the circumference  and  trabecular bone in the center  if it is ironstone through out then it is iron stone.

[Mark Kmiecik]

Ironstone concretion showing differentiated sedimentation. Have seen tons of them in the Mazon Creek concretions I've collected. It may have formed around something organic like MC concretions, or maybe not like many MC concretions. Sometimes all it takes is some organic matter 1/2 the size of a pinhead to get the ball rolling, and the concretion will keep growing in size as long as conditions favor growth.