Starfish to starfish by the French zoologist de Blainville in 1830. It is derived from the Greek "aster", ἀστήρ (a star) and the Greek "eidos", εἶδος (form, likeness, appearance). The class Asteroidea belongs to the phylum Echinodermata. As well as the starfish, the echinoderms include sea urchins, sand dollars, brittle and basket stars, sea cucumbers and crinoids. The larvae of echinoderms have bilateral symmetry, but during metamorphosis this is replaced with radial symmetry, typically pentameric. Adult echinoderms are characterized by having a water vascular system with external tube feet and a calcareous endoskeleton consisting of ossicles connected by a mesh of
Northern spiny-tailed gecko Northern spiny-tailed gecko The northern spiny-tailed gecko ("Strophurus ciliaris") is a species of lizard in the family Diplodactylidae which is endemic to Australia. The meaning of the scientific name or binomial, "Strophurus ciliaris", comes from "strophurus" meaning "turning-tail" and "ciliaris" meaning "eyelashed", referring to the spines above the eyes. It is highly variable in colour. This species can vary from a uniform grey colour, with few black or orange scales, to rich brown, with a mottled pattern of grey, white, and orange scales. Spines are present along the tail and long spines are generally present above the eyes, giving the