Board Thread:Fossil Fuels/@comment-107.77.90.53-20171015152917/@comment-17754282-20171015175543

Actually, if you look at the River Bank scene in JP 3, there are two Ankylosaurus along with Parasaurolophus, Stegosaurus and Brachiosaurus, so they're not solitary.

As for them not appearing in the Gyrosphere Valley, the official website lists them as living in that enclosure, but we just don't happen to see them.

That said, with them being only 6 feet tall, maybe they're just not as comfortable around the large Sauropods like Brachiosaurus and Apatosaurus as Stegosaurus and Triceratops are.