BBC earth has a post about common misconceptions of various popular dinosaurs.  Velociraptor, Archaeopteryx, Triceratops, and yes, Tyrannosaurus rex are just a few of the ones listed.

Like many children, I had a severe dinosaur phase. There was a period of my life when I cared more about prehistoric reptiles than pretty much anything else.

However, it turns out that much of what I thought I knew is wrong. That is because the prevailing image of dinosaurs has always been a little slow in catching up with current scientific understanding.

Until the “dinosaur renaissance” of the late 1960s, dinosaurs were always depicted as sluggish and lumbering. But experts realised that they had active lifestyles, and this slowly filtered through to the public – helped by 1993’s Jurassic Park.

The past two decades have seen another major revolution in our ideas about dinosaurs, thanks to new fossils from China and advances in technology. But most of these findings have not seeped out into popular depictions of dinosaurs.