Ruling Regigigas X vs Mysterious Fossil

[HorseCrab]

When Regigigas X uses its Sacrifice Poke-Power my opponent generally gets a Prize. But what if I Sacrifice Mysterious Fossil? It says when Mysterious Fossil is Knocked out my opponent doesn't get a Prize.

 

[AmishEskimoNinja]

All of the specific fossils (dome, helix, old amber, ect) were errata'd to say they did count as a knocked out pokemon, but I don't believe mysterious fossil ever was. Going with that assumption, your opponent would not take a prize.