http://www.diatribune.com/marine-life-series-anatomy-snail-shell Comments for "Marine Life Series: Anatomy of a Snail Shell" en http://www.diatribune.com/marine-life-series-anatomy-snail-shell <p>All snails belong to the phylum Gastropoda (literally &quot;stomach-footed&quot;). Nearly all are covered with a single spiral shell. Given that there are around 75,000 species around the world, plus several thousand more extinct forms known from their fossils, there is obviously going to be quite a bit of variation in this group of univalves. Including some that are completely shell-less, such as land and sea slugs, and others whose shells are so rudimentary that they are barely noticeable. So I&rsquo;ll be using some pictorial examples that I hope will illustrate some of the basic common features.</p> <p><a href="http://www.diatribune.com/marine-life-series-anatomy-snail-shell">read more</a></p> http://www.diatribune.com/marine-life-series-anatomy-snail-shell#comments marine life Sat, 19 Jan 2008 00:22:23 -0700 Mark H 3048 at http://www.diatribune.com