Western Interior Seaway Animation. The Western Interior Seaway WIS was a shallow inland sea that covered much of North America during the Late Cretaceous Period 115-70 million years ago. During its maximum extent approximately 92 million years ago it was 2000 miles long 600 miles wide and 2500 feet deep stretching from the Gulf of Mexico to the Arctic Ocean.
The Wyld et al. Model is a bit less complicated and less distracting as far as the Western Interior Seaway is concerned this allows attention to be focused easier on the Western Interior Seaway. Western Interior Seaway.
The continuous rising in the sea level formed the Western Interior Seaway.
The Sevier mountains can be seen developing to the west and early Laramide uplifts begin to appear in Colorado and Wyoming as the seaway recedes. Rectilinear Mollweide or Spherical may be centered on a location What are the pixel dimensions. When dinosaurs roamed. Image Sequence or mp4 movie.