CHRISTIAN DARKIN / SCIENCE PHOTO LIBRARY CHRISTIAN DARKIN / SCIENCE PHOTO LIBRARY
Ceratopsian dinosaurs, computer artwork. Seen here from right are a Triceratops, a Monoclonius, a Pentaceratops, a Styracosaurus and a Pachyrhinosaurus. Ceratopsia were herbivorous beaked dinosaurs that lived in North America and Asia during the Cretaceous period, 135-63 million years ago. They had at least one horn and a neck frill.
Model release not required. Property release not required.