Jovan Hadži theories of animal evolution. He devised a system of classification in which he divided the animal kingdom into six phyla: Protozoa, Parazoa, "Ameria" (animals with no segments), "Oligomeria" (animals with few segments), "Polymeria" (animals with many segments) and Chordata. His choice of characters important for classification was generally discredited by his contemporaries, and the system was never accepted by zoologists. However, due to its simplicity, the system was widely used in science education in former Yugoslavia. His other major theory was that of the origin of metazoa - he developed an existing hypothesis stating that the first multicellular animals resembling
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)