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In the Late Cretaceous, the hadrosaurs, ankylosaurs, and ceratopsians experienced success in Asiamerica (Western North America and eastern Asia). Tyrannosaurs dominated the large predator niche in North America. [4] They were also present in Asia, although were usually smaller and more primitive than the North American varieties. [4]
The map of North America with the Western Interior Seaway during the Campanian. The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, or the Western Interior Sea) was a large inland sea that split the continent of North America into two landmasses for 34 million years.
Map of North America During the Late Cretaceous. During the Cretaceous, the present North American continent was isolated from the other continents. In the Jurassic, the North Atlantic already opened, leaving a proto-ocean between Europe and North America. From north to south across the continent, the Western Interior Seaway started
Late Cretaceous North America (3 C, 1 P) M. Cretaceous Mexico (117 P) P. Cretaceous paleontological sites of North America (11 P) S. Cretaceous System of North ...
Map of the Hell Creek and Lance Formations in western North America The Hell Creek Formation in Montana overlies the Fox Hills Formation and underlies the Fort Union Formation , and the boundary with the latter occurs near the Cretaceous–Paleogene boundary (K–Pg), which defines the end of the Cretaceous period and has been dated to 66 ± 0. ...
Late Cretaceous life of North America (2 C) M. Maastrichtian Stage of North America (4 C, 56 P) S. Upper Cretaceous Series of North America (5 C, 69 P)
Pages in category "Late Cretaceous pterosaurs of North America" The following 15 pages are in this category, out of 15 total. This list may not reflect recent changes. A.
The Late Cretaceous Epoch, the geologic time epoch 100 to 66 million years ago in Cretaceous Period geochronology, ... Late Cretaceous North America (3 C, 1 P)