Looking for a monster

[Ezequielramone]

Hi all, a friend of mine told me he is looking for a particular kind of dragon.
He saw the art but don't remember the book, name or anything about it.
The only distinctive thing about those dragons is their jaws. They have bifid jaws.

I know there is a lot of you that know a lot of monster for all the DND products, so I humbly ask for your knowledge and help.
If someone could tell me where to look for this monster I'll be grateful.

 

[SunGold]

Hmm...well, the first thing that comes to mind isn't technically a dragon, but it looks like one and has the wonky jaw: ethereal marauder

 

[Nytmare]

The only thing that's coming to mind for me was some green Magic card monster that had a predator mouth...

[EDIT] Does googling for something like mantis dragon jog anything for him? http://tinyurl.com/mantisdragon

 

[Ezequielramone]

I'll check those two with him.
Thank you both.