Forum:Can you summon Chaos monsters from the graveyard since they're a special summon?

I play alot at my college, and regardless of how many times this happens to me my Ben Kei deck still tears everyone to shreds. At least 4 times people have summoned their Chaos monsters from the with the card's effect since the text says it's a special summon,I just got back into the game, but I was pretty sure that you couldn't do that, I could be wrong though.