stillborn crested?

[CanadianJackson]

Last night, I checked around 11, one of my eggs slit and the baby poked its head, so I waited till about 1 this afternoon and there didn't seem to be any progress. So i very very carefully slit the egg a little more and gently pulled it a little more of the way out, still no sign of movment or beathing. Now I noticed the shell is much harder than any of my chameleon or bearded dragon eggs, are they normally like that? or was the egg over calcified and it just was to tough for the baby to get out of, it also had its tongue out just a tiny little bit. has anyone else had problems like this??

Thanks