I love that we have no idea what the back plates were for.

Maybe species identification, thermo regulation, and display. Maybe also in mating displays.

But we don’t even know how they were on the outside- external feature? Attached to each other? Burried under a truly amazing amount of chonkerness?

I mean really.

Imagine as one might that stegos were basically the camels of dinosaurs, and the plates sole purpose was to keep their fatty backsides from flopping over