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 #18 (February 2004). She fights her brother Genis-Vell, who was insane at the time, in the process helping to restore his sanity. She then tries to lay claim to the "Captain Marvel" title, though her brother refuses to give it up. Phyla is next seen at the trial of Starfox. The "Captain Marvel" (vol. 4) series heavily hinted that Phyla-Vell is a lesbian, and in #25 (September 2004) the character admits that she is attracted to Moondragon and invites her on a tour of the "spiral nebula near Renault VII". Before Moondragon can accept the two wander through a portal.