They didn't?
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Those dinosaurs being related to chicken wings

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Dinosaurs are part of God’s divine plan. They were not on/left off the arc. FOSSIL FUELS! Think about it.
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Feathers or not we can't say. Not enough data. Anything further back than wooly mammoths is unknown.
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All the time, that's how science works.
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Some of them do though. They have the fossils for that. Most of them are probably the bird type though. I'm not saying all of them, but they may of had fur or something too. Because some of them lived in continents where it was too cold for cold blooded creatures.
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Some still exist. Not aware of any with feathers but there could be.
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