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That really depends on how you think dinosaurs were feathered.

You see, we know for a fact that at least all small bipedal dinosaurs had feathers. The dinosaurs in the group Theropoda- the carnivorous dinosaurs and all of their immediate relatives- have the strongest evidence for this, with impressions of feathers running across the whole body and covering even the face and feet. This last year, a small ornithopod related to the hadrosaurs and iguanodonts was found with feather types unlike any found in modern birds.

On the other hand, most of the evidence we have show that Spinosaurus, in terms of lifestyle and anatomy, was closest to the crocodile. It makes sense, considering how the two share a common anscestor at around 270 million BCE. It also makes sense that crocodiles don't have feathers. They aren't very practical in the tropical swamps both parties live in, or at the very least don't serve any purpose the same way they would if they lived on land.

As of 2014, it's unclear if Spinosaurus had feathers. It makes sense in terms of how it relates to other dinosaurs, but not exactly in terms of habits. It is likely either way, but we'll need to further our understanding about how these creatures evolved and how feathers form today if we want a complete picture of the past.

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10y ago

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