Animal mesoderm forms by enterocoelic pouching, through invagination of the endoderm. The main deuterostome phyla are the Echinodermata and the Chordata. Echinoderms are exclusively marine and include starfish, sea urchins, and sea cucumbers. The chordates are dominated by the vertebrates (animals with backbones), which consist of fishes, amphibians, reptiles, birds, and mammals. The deuterostomes also include the Hemichordata (acorn worms). The Ecdysozoa are protostomes, named after their shared trait of ecdysis, growth by moulting. They include the largest animal phylum, the Arthropoda, which contains insects, spiders, crabs, and their kin. All of these have a body divided into repeating segments, typically
Phyla-Vell written by Christos Gage. Leading on from this appearance she is part of the line-up for a new Guardians of the Galaxy. After Genis-Vell, then known as Captain Marvel, previously destroyed and recreated the universe, the "new" version was subtly altered with Phyla-Vell's existence being one of the changes. It is revealed that she is the second artificially created offspring of Captain Mar-Vell who was created by her mother Elysius in the "new" universe because her first attempt (Genis-Vell) had been so successful. Initially her origin conflicted with previously established storylines, but this is resolved in "Captain Marvel" (vol. 4)