Describer

Sternberg, 1928

Time

Cretaceous Late Campanian Maastrichtian

Classification

Ornithischia Thyreophora Eurypoda Ankylosauria Nodosauridae

Diet

Herbivore

Fossilsite

Judith River Formation (Wedge), Montana, US; Judith River Group (Wedge), Horseshoe Canyon Formation, St. Mary River Formation, Alberta, Canada

Fall Under

Edmontonia

Length

7 meter

Info

Typespecies - Skull

Edmontonia (Sternberg, 1928) = Chassternbergia (Bakker, 1988); Denversaurus (Bakker, 1988)

Edmontonia > Edmontonia longiceps (Sternberg, 1928) >> Denversaurus schlessmani (Bakker, 1988)

Edmontonia > Edmontonia rugosidens (Gilmore, 1930) = Palaeoscincus rugosidens (Gilmore, 1930) >> [Chassternbergia rugosidens] (Gilmore, 1930) >> [Panoplosaurus rugosidens] (Gilmore, 1930)

Edmontonia > Edmontonia australis (Ford, 2000)

Edmontonia > Edmontonia sp (2) > Edmontonia sp (3)

Edmontonia longiceps is at least as large as Panoplosaurus mirus (length approximately 6-7 m). It is characterized by a relatively long, narrow skull with a quadrate more oblique than in Panoplosaurus mirus. The premaxillarly palate is longer than wide. as in Panoplosaurus mirus the atlas and axis vertebrae are coossified (Sternberg, 1928).

The skull of Edmontonia rugosidens is pyriform in dorsal view, the premaxillarly palate is wider than long, and the atlas and axis are coossified (Gilmore, 1930). Edmontonia (\\\\\\\"of Edmonton\\\\\\\") was one of the largest and latest of the nodosaurids -armoured dinosaurs without the broad \\\\\\\"horns\\\\\\\", contorted nasal passages, and bony tail club of their relatives the ankylosaurids. 4 specimens including complete skulls, much of the skeleton and armor.