Classes in it include Solenogastres, which contains narrow-footed species; the Tryblidia, which contains cap-shaped organisms; and Caudofoveata, all of which are shell-less. This phylum also includes the monoplacophora, which were thought to be extinct until 1952, and polyplacophora, which includes chitons. Most animals in 
Classes in it include Solenogastres, which contains narrow-footed species; the Tryblidia, which contains cap-shaped organisms; and Caudofoveata, all of which are shell-less. This phylum also includes the monoplacophora, which were thought to be extinct until 1952, and polyplacophora, which includes chitons. Most animals in this phylum have a radula, a rough organ used to scrape or bore to obtain food, and a mantle, a fold in the body wall that secretes calcium carbonate. FTP, name this phylum whose more common classes include gastropoda and  cephalopoda.
Classes in it include Solenogastres, which contains narrow-footed species; the Tryblidia, which contains cap-shaped organisms; and Caudofoveata, all of which are shell-less.
{mollusca} or {mollusks}