Two paleontologists have concluded a 10-year study of two ceratopsians (horned dinosaurs) and reached a startling conclusion.  John Scannella and Jack Horner have been poring over in excess of 50 specimens of Triceratops and the lesser known Torosaurus and revealed that Torosaurus, rather than being a different dinosaur, was actually the adult stage of Triceratops.  The scientists pointed out that skull changes as ceratopsians got older is normal, and the skulls of Triceratops and Torosaurus were more similar than different, with the major difference being extra "air holes" in Torosaurus.  Also, many specimens of Triceratops have been found in various stages of growth, but no juvenile Torosaurus has ever been found.  Compare for yourself the pictures of Triceratops (darker skin) and Torosaurus and see if you agree.