This specific process is reversible and the people seem to retain their memories and consciousness.

Suaron is working with Stegron in this storyline, another villain who likes turning people into dinosaurs.

Stegron(that's his real name, not an alias) gained his powers by stealing the Connors formula--the experimental serum tat uses the DNA of various reptiles and amphibians to boost the immune system and regenerative abilities of humans as a way of replacing lost limbs, but as a side effect turned doctor Connors into a superhuman strong lizard man who is regularly either completly feral or an embodiment of Connors repressed misanthropy--and doctored it up with additional DNA taken from Dinosaurs from the savage lands.

So, as the Lizard can psychically control reptiles, Stegron can psionically control non-avian dinosaurs.

And that seems to be how they were controlling the people they turned into those triceratopses.