Landfall
Geological / environmental event
367500000BFA
The first four-legged animals emerge on land.
By around this point in history, with Frith's surface being colonized by vascular plants and arthropods, the first tetrapods (four-legged vertebrates) begin to take to the land. Though a far cry from modern reptiles, birds, or mammals, these amphibious creatures' landfall would mark a new chapter in the Frithitt odyssey.