Enormous Triceratops Jaw with Teeth
Late Cretaceous, Maastrichtian Stage
Hell Creek Formation, Eastern Montana
Triceratops is unquestionably one of the most popular dinosaurs known. It lived at the end of the Cretaceous, 67 million years ago, in vast herds that are thought to have fed near the shorelines of the intracontinental seaway, which isolated the western half of North America from the rest of the continent.
The prodigious size of the present specimen indicates an overall skull length of approximately eight feet. Another feature that recommends this specimen is its completeness, a rare attribute in Triceratops jaw and dentary specimens. The bones at the rear of the jaw where it articulated to the upper skull, which are usually missing or disarticulated in this type of specimen, are present. Also, this jaw retains several of its original teeth; in ceratopsians, it is common to find that the teeth have "floated out," or have become dislodged, after death. This specimen is an exceptional find.
Length measures 33 inches; Height measures 17 1/4 inches.