The class is made up of the snails, which have a shell into which the animal can withdraw, and the slugs, which are snails whose shells have … A garden snail is a gastropod. It should be noted that torsion involves the twisting of the gastropod's body, it has nothing to do with the coiling of … What does gastropod mean in latin? ‘Included here are the gastropods, bivalves, cephalopods, and other lesser groups, as follows.’ ‘The beach sands are dominated by shells of bivalve mollusks, mainly venerids, gastropods, and echinoderms.’ ‘The major groups of drilling marine predators include octopods and gastropods.’ Torsion is a gastropod synapomorphy which occurs in all gastropods during larval development. gaster is the Greek word for "belly" and pod is a form of the Greek word for "foot" so literally, the word "gastropod" belly foot. gaster is the Greek word for "belly" and pod is a form of the Greek word for "foot" so literally, the word "gastropod" belly foot. Torsion is the rotation of the visceral mass, mantle, and shell 180˚ with respect to the head and foot of the gastropod. This rotation brings the mantle cavity and the anus to an anterior position above the head.. Basically it has to do with the ventral position of the snail/slug/mollusk's foot. Gastropod - Gastropod - The shell: The typical snail has a calcareous shell coiled in a spiral pattern around a central axis called the columella. [gastro- + G. pous ( pod- ), foot] The word comes from the Greek "Gaster/Gastros" which means "stomach" and "pous/podos" which means "foot." Learn more. Gastropoda: ( gas-trop'ŏ-dă ), A class of the phylum Mollusca that includes the snails, whelks, slugs, and limpets. The name gastropod is derived from the Greek words gaster, meaning stomach, and poda, meaning feet. gastropod definition: 1. a type of animal with no spine, a soft body with a flat base used for moving, and often a shell…. Is a slug an insect? From the ventral… See definitions of gastropod. Generally, the coils, or whorls, added later in life are larger than those added when the snail is young. GASTROPOD Meaning: "stomach" (see gastric) + pous (genitive podos) "foot" (from PIE root *ped- "foot"). An example of a gastropod is a snail or a slug. The adult gastropod ends up configured in such a way that its body and internal organs are twisted and the mantle and mantle cavity is above its head. At the end of the last whorl is the aperture, or opening. Gastropod, any member of more than 65,000 animal species belonging to the class Gastropoda, the largest group in the phylum Mollusca. Snails and slugs, both freshwater and saltwater, and other animals that make coiled seashells such as conches, abalones, cowries and limpets belong to the gastropod class.