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 part of her. Annihilation: Conquest - Quasar has been collected into trade paperbacks: Phyla-Vell Phyla-Vell is a fictional character, a comic book superhero appearing in American comic books published by Marvel Comics. She has gone by the names Quasar, Captain Marvel and Martyr. She was created by Peter David and Paul Azaceta in "Captain Marvel" (vol. 5) #16 (January 2004). Her name is derived from the scientific classification phylum, one of the levels of organization (taxons) for classifying life. This is a reference to the fact that her brother Genis-Vell's name comes from genus, one of the other classifications for