This skeleton, at present withdrawn from lack of space, will be mounted in the Jurassic Dinosaur Hall in the new wing now under construction.
[Illustration: Fig.

35 .-- Skull and lower jaw of Armored Dinosaur _Ankylosaurus_, from Upper Cretacic (Edmonton formation) of Alberta.

Left side view.

_After Brown_] ANKYLOSAURUS.
Related to _Stegosaurus_, equally huge, but very different in proportions and character of its armor was the Ankylosaurus of the late Cretacic.

This animal, a contemporary of the Tyrannosaurus and duck-billed dinosaurs was more effectively though less grotesquely armored than its more ancient relative.