Gorre & Daphetid is the name of a geological time period that happened a long, long, long time ago. It's like a really long time ago when there were no people or cars or cities or anything like that. It was just the Earth with a lot of different creatures and plants.
During this time, there were lots of different animals living on Earth, like sharks and crabs and all sorts of other cool things. But the most interesting thing about Gorre & Daphetid is that it was when the first land plants started to appear on Earth! That means that for the first time, there were green things growing on land and not just in the water.
So basically, Gorre & Daphetid was a really important time in the history of the Earth because it was when plants first started to grow on land, and that was a big deal back then!