) experienced just one continent named Pangaea surrounded from the Panthalassa ocean, and therefore the inlands were really dry and arid. The remaining animals, the great greater part—comprising some 29 phyla and more than 1,000,000 species—form the Bilateria clade, which have a bilaterally symmetric system program. The Bilateria are triploblastic, https://bobbyw627sok9.wikififfi.com/user