Several skulls and incomplete skeletons on exhibition and other skeletons not yet prepared add to the Museum collection of this group.

Trachodon skeletons may also be found in the Museums of New Haven, Washington, Frankfurt-on-the-Main, London and Paris, but nowhere a series comparable to that displayed at the American Museum.
THE TRACHODON GROUP.
The following description of the Trachodon group is by Mr.Barnum Brown and first appeared in the American Museum Journal for April 1908:[16] "This group takes us back in imagination to the Cretaceous period, more than three millions of years ago, when Trachodonts were among the most numerous of the dinosaurs.

Two members of the family are represented here as feeding in the marshes that characterized the period, when one is startled by the approach of a carnivorous dinosaur, Tyrannosaurus, their enemy, and rises on tiptoe to look over the surrounding plants and determine the direction from which it is coming.

The other Trachodon, unaware of danger, continues peacefully to crop the foliage.

Perhaps the erect member of the group had already had unpleasant experiences with hostile beasts, for a bone of its left foot bears three sharp gashes which were made by the teeth of some carnivorous dinosaur.
[Illustration: Fig.