Endoskeleton three phyla and one subclass of animals, endoskeletons of various complexity are found: Chordata, Echinodermata, Porifera, and Coleoidea. An endoskeleton may function purely for support (as in the case of sponges), but often serves as an attachment site for muscle and a mechanism for transmitting muscular forces. A true endoskeleton is derived from mesodermal tissue. Such a skeleton is present in echinoderms and chordates. The poriferan 'skeleton' consists of microscopic calcareous or siliceous spicules or a spongin network. The Coleoidae do not have a true endoskeleton in the evolutionary sense; there, a mollusk exoskeleton evolved into several sorts of internal
Phyla-Vell Phyla later appeared during "Annihilation" where she had been visiting her father's grave with Moondragon when the pair were attacked by Thanos who ripped off Moondragon's ear and gave it to Phyla, telling her to go to Drax the Destroyer and how his actions would determine Moondragon's fate shortly before teleporting away with Moondragon. Drax has indicated he will not be stopping his pursuit of Thanos. Phyla then goes with Nova and Star-Lord to lead a final battle against Annihilus, being saved at the last second by a massive energy wave caused by the just freed Galactus, which left only