Western Interior Seaway Thumbnails

: Western Interior Seaway 65 Ma K-T Boundary

: Western Interior Seaway 67 Ma Maastrichtian (Late)

: Western Interior Seaway 69.7 Ma Maastrichtian

: Western Interior Seaway 70.4 Ma Campanian/Maastrichtian

: Western Interior Seaway 72.1 Ma Campanian (Late)

: Western Interior Seaway 80 Ma Campanian (Middle)

: Western Interior Seaway 82.9 Ma Campanian (Early)

: Western Interior Seaway 84 Ma Santonian (Late)

: Western Interior Seaway 87.9 Ma Coniacian (Middle)

: Western Interior Seaway 89.8 Ma Turonian (Late)

: Western Interior Seaway 92.1 Ma Turonian (Middle)

: Western Interior Seaway 94.9 Ma Cenomanian (Late)

: Western Interior Seaway 99 Ma Albian/Cenomian

: Western Interior Seaway 105 Ma Albian (Late)

: Western Interior Seaway 120 Ma Aptian

: Western Interior Seaway 130 Ma Barremian

: Western Interior Seaway 145 Ma Berriasian

: Western Interior Seaway 152 Ma Jurassic (Late)

: Western Interior Seaway 161 Ma Jurassic (Late)

: Western Interior Seaway 170 Ma Jurassic (Middle)

: Western Interior Seaway 185 Ma Jurassic (Early)