Other
Black Hills Institute of Geological Research, Inc.: Ceratopsian
The Ceratopsian dinosaurs, described here, lived in the Cretaceous Period between 135 and 65 million years ago. This group included the Triceratops and the Torosaurus.
Other
Msu News: Msu Finds Triceratops, Torosaurus Were Different Stages of Dinosaur
Two paleontologists from Montana State University, John Scannella and Jack Horner, discuss their newly released theory that Triceratops and Torosaurus were actually the same dinosaur but at different stages of their life cycle. [Date of...
Kidport
Kidport: Reference Library: Dinosaurs
A nicely illustrated and informative site on dinosaurs from the Cambrian period until the Quaternary period.
Australian Broadcasting Corporation
Australian Broadcasting Corporation: Walking With Dinosaurs: Fact File: Torosaurus
The Torosaurus was first discovered in 1891, having lived around 65 million years ago. This page has basic information and a video clip about the Torosaurus.