Related Clues:

• Fossilised
• If so, dies, being changed into bone
• Turned into bone
• It's got to be hard to be like this
• That was hard to make
• That's got to be a hard one
• If so dies all in a mess, that made it hard
• If odes is the way to make it, this made it hard
• How one dies, if so hardened
• If is in reverse, does get around that this is hard
• Made B one like this?
• It's hard to get like this
• That's made it hard
• Hard to have got
• It's hard to have been made like this