Skull Chunks?

[musicnfossils]

Found these pieces sitting together today and I’m wondering if they might be pieces of a ceratopsian skull. Don’t seem to fit together so they might not be from the same dinosaur.  They have similar texture to other ceratopsian skull bones I have including a lacrimal and frill pieces, but I might be off on that assumption. 
 

Dinosaur park fm. 

I’ll also toss this in too, though I haven’t cleaned it at all so it might be hard to ID. It’s a separate piece, and was so weird I couldn’t leave it behind. 
 

 

[fossilhunter21]

@Troodon.

[Troodon]

Good chance its Ceratopsian skull/frill material