Final answer:
The armor of most Stegosauria members, unlike Stegosaurus, consisted of a combination of bony plates and spikes.
Step-by-step explanation:
The armor along the back of most members of Stegosauria, except for Stegosaurus, consists of bony plates and spikes. These dinosaurs, classified under the larger group of Ornithischia (“bird-hipped” dinosaurs), were known for their distinctive armor. Unlike the Stegosaurus, which had large, flat plates along its back, other members of the Stegosauria family typically featured a combination of smaller bony plates and spikes. These armor adaptations likely served as protection against predators and potentially for species-specific recognition or thermoregulation.
Members of the Stegosauria group lived during the Jurassic period, and their fossils are a rich source of information about the diversity of dinosaur species.
Edmontonia, another Ornithischian dinosaur, was known for its heavy armor and lived during the Late Cretaceous period.