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RE: Dinosaur a tecnical term; 3 specifically

Also, don't forget that this change in content has been a two-way street. Not only are birds now included in the Dinosauria, but there are taxa that were once described (scientifically) as dinosaurs but which were later removed from this group e.g., teratosaurs, hallopodids, revueltosaurs.

you can probably guess my question by now. :D

when and what were those three?


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