) had a single continent named Pangaea surrounded with the Panthalassa ocean, and as a result the inlands ended up quite dry and arid. The remaining animals, The nice vast majority—comprising some 29 phyla and in excess of one million species—form the Bilateria clade, which have a bilaterally symmetric overall https://wilidlife-animals53062.blogofoto.com/65766141/an-unbiased-view-of-animal