Marrus orthocanna
... that Marrus orthocanna is a colonial animal composed of smaller animals arranged on a stem?
... that <i id="mwBrA"><b id="mwBrE"><a href="./Marrus_orthocanna" id="mwBrI" rel="mw:WikiLink" title="Marrus orthocanna">Marrus orthocanna</a></b></i> <i id="mwBrM">(pictured)</i> is a <a href="./Siphonophorae" id="mwBrQ" rel="mw:WikiLink" title="Siphonophorae">colonial animal</a> composed of <a href="./Zooid" id="mwBrU" rel="mw:WikiLink" title="Zooid">smaller animals</a> arranged on a stem?