3 cotyledon?

First anyone ever seen a seedling with three cotyledon? It is one of about 10 same bagseeds and I can see it is starting to throw out its first leaves. I am at a loss as to how a dicot seed can have three - has this happened to anyone else?

ive seen some bag seed with three cotyledons. I guess its common or uncommon

haha i know its a while back now but this has just happened to me. how did yours turn out?
was there three sets of leaves at each node?

its all genetic
I call it a tricot

yeah but it dosent slow growth or have any other genetic defect that isnt desirable, right?