CollectA XenoceratopsCollectA Xenoceratops CollectA model 88660 Product Dimensions: 13. 4 x 4. 1 x 6. 6 cm Age: 3 years and up The Xenoceratops, was a dinosaur with an impressive arrangement of horns and frills on its head. This herbivorous dinosaur lived about 78 million years ago during the Late Cretaceous period in what is now Canada. One of the coolest things about the Xenoceratops is that it was named based on fossil evidence discovered in 1958, but it wasn't