Super Strange .... anyone ever seen ?!?!

I germinated about 20 - 25 plants this year. On my third germination I did the basic paper towel and plastic bag trick and most seeds did germinate. After three days in the bag my seeds grow super quick and almost completely lost the seed casing. So I planted them in a small 4" pot and now they have sprouted. My super strange question is .... One of them GREW two sprouts from ONLY ONE seed? Is this common or has anyone ever seen this? I don't have pictures of this but below is the best example I can provide: