In geological terms, what are Rodinia and Pannotia?

Question

Hint:

1. Paleozoic Era = 543 million years ago (starting with the Cambrian period - shellfish, trilobites)
2. Mesozoic Era = 248 million years ago (starting with the Triassic period - dinosaurs, mammals)
3. _______ Era = 65 million years ago (starting with the Tertiary period - mass extinction)

Answer 1

Ancient supercontinents
Rodinia and Pannotia are estimated to have been formed 1 billion years ago and 600 million years ago respectively, and subsequently broken up in Earth's continuing long slow movement in tectonic plates.