Below you can find the One theory says about 300 million years ago gondwana & laurasia combined to form this supercontinent Jeopardy Words Answer. The answer to One theory says about 300 million years ago gondwana & laurasia combined to form this supercontinent has 7 letters. This clue belongs to the Science category and is part of Jeopardy Word Level 2389. If you scroll near the bottom you will find other clues and answers part of level 2389