Rissoa Freminville in Desmarest, 1814: a genus of gastropods
C. tubularis and its sister species, C. verrilli, are the only hermit crabs known to show sexual dimorphism in shell choice, with males using normal marine gastropod shells, while females use shells of gastropods in the family Vermetidae, which are attached to rocks or other hard substrates.
Some gastropods, such as the sea hare Aplysia, appear to lack respiratory pigments altogether.
The Winton Formation had a faunal assemblage including bivalves, gastropods, insects, the lungfish Metaceratodus, turtles, the crocodilian Isisfordia, pterosaurs, and several types of dinosaurs, such as the theropod Australovenator, the sauropod Wintonotitan, and unnamed ankylosaurians and hypsilophodonts.
Samples of bottom fauna taken in 1998 documented the presence of nationally rare species of gastropods such as Hippeutis complanatus and bivalve Swan mussel; and during the preceding decades two species of limnetic gastropods were documented.
Garnotia is also an obsolete genus level name for some species of calyptraeid gastropods (Calyptraeidae) which are currently considered to belong to the genus Crepidula.
Two rare species of air-breathing land gastropods also live on the island, the two-lipped door snail Balea biplicata and the German hairy snail Pseudotrichia rubiginosa, as well as several rare species of beetles.
The Patch reefs from Valle di Rimbianco present a diverse fauna of fossilized calcitic sponges (Porifera), corals (Cnidaria), bivalves and gastropods (Mollusca), Brachiopoda and Echinodermata.
Several animal groups studied in Australia consist largely of short-range endemics, including freshwater and terrestrial Gastropods (snails and slugs), earthworms, velvet worms, mygalomorph spiders, schizomids, millipedes, phreatoicidean crustaceans, and freshwater crayfish.
The Winton Formation had a faunal assemblage including bivalves, gastropods, insects, the lungfish Metaceratodus, turtles, the crocodilian Isisfordia, pterosaurs, and several types of dinosaurs, such as the theropod Australovenator, the sauropod Diamantinasaurus, and unnamed ankylosaurians and hypsilophodonts.