Panthalassa (Greek for "all seas") was the vast global ocean that surrounded the supercontinent Pangaea during the late Paleozoic and the early Mesozoic eras. It included the Pacific Ocean to the west and north and the Tethys Ocean to the southeast. It became the Indian and Pacific Oceans following the closing of the Tethys basin and the breakup of Pangaea, which created the Atlantic and Arctic Ocean basins.

In the map on the right, the earth's equator was a line that roughly crossed the spot where Spain, Morocco (Casa Blanca), and Boston met. South of that line, the land mass was called Gondwana. North of the line, it was named Laurasia.

See also

• Plate tectonics
• Paleontology

External links

• Paleomap project

Plate tectonics | Historical geology | Historical oceans

Panthalassa | Urozean | Panthalassa | Pantalasa | Panthalassa | Panthalassa | Pantalasa | Panthalassa | パンサラッサ | Panthalassa | Pantalasa | Panthalassa | Panthalassa