Which 6th Generation Pokemon can NOT be caught on Pokemon X?

Question

Just got Pokemon x and it's time to fill up the pokedex again. I need to know what 6th Gen Pokemon not to look for.

Answer 1

These are the Pokemon that are from the sixth gen, but can't be caught in Pokemon X:
Spritzee
Aromatisse
Skrelp
Dragalge
Yveltal

Other than these there are Diancie, Volcanion and Hoopa too, but you can't get them through normal means anyway, so I didn't include them.

Hope I helped!