For 10 points, name this gigantic body of water that opened up between Laurasia and Gondwanaland, named for a Titaness and daughter of Uranus.
The Hateg formation was located within this entity, and is now a source of dinosaur fossil riches in Romania. The Western portion of this entity is called the "Alpine" part, which has such disappeared subportions as the Valais and Meliata segments. This entity was divided by the Elburz and Carpathian orogenies, after which its northern part became known as the "Para" part. The "Paleo" version of this entity was found north of the Cimmerian plate, which formed the final version of this entity when it moved northward. This body opened up when the component of Pangaea began to move apart. For 10 points, name this gigantic body of water that opened up between Laurasia and Gondwanaland, named for a Titaness and daughter of Uranus.
The Hateg formation was located within this entity, and is now a source of dinosaur fossil riches in Romania.
Tethys Ocean [accept Tethys Sea]