The length of the horns is 2 feet, 9-1/2 inches.

The rostral bone or beak, and the lower jaw, are lacking; in the illustration on the cover they have been restored in outline.

This fine skull was discovered by George M.Sternberg, and purchased for the Museum by Mr.Charles Lanier in 1909.] TRICERATOPS.
This is the best known of the Horned Dinosaurs, as various skulls and partial skeletons have been found from which it has been possible to reconstruct the entire animal.

There is a mounted skeleton in the National Museum, another will shortly be mounted in the American Museum, and there are skulls in several American and European museums.
_Triceratops_ exceeded the largest rhinoceroses in bulk, equalling a fairly large elephant, but with much shorter legs.

The great horns over the eyes projected forward or partly upward; in one of our skulls they are 33-1/2 inches long.