Plants colonised land first, evolving from green algae. They were followed by fungi and arthropods, and later by vertebrates such as early amphibians. The development of seeds, vascular tissues and lungs allowed life to expand into diverse terrestrial environments - wikipedia 
Life on Land: c. 470–360 Million Years Ago
HTML5 mp4 https://david.hitchhikers.earth/assets/history-of-the-earth/History%20of%20the%20Earth%20%5BQ1OreyX0-fw%5D.mp4#t=10:02 Life on Land: c. 470–360 Million Years Ago
Continents merged into the supercontinent Pangaea by about 335 million years ago, altering global climate and ecosystems. Several mass extinctions punctuated this period, reshaping life and opening evolutionary possibilities.