Arctic

Greater Arctic Region Thumbnails

: Early Miocene (ca. 20 Ma)

: Middle Eocene (ca. 50 Ma)

: Late Cretaceous (ca. 70 Ma)

: Late Cretaceous (ca. 90 Ma)

: Early (aka. ‘middle’) Cretaceous (ca. 110 Ma)

: Early Cretaceous (ca. 130 Ma)

: Early Cretaceous (ca. 140 Ma)

: Middle Jurassic (ca. 170 Ma)

: Late Triassic-Early Jurassic (ca. 200 Ma)

: Middle Triassic (ca. 240 Ma)

: Middle Permian (ca. 260 Ma)

: Early Pennsylvanian (ca. 320 Ma)

: Early Mississippian (ca. 350 Ma)

: Late Devonian (ca. 380 Ma)