valvate pedicellaria瓣状叉棘
globiferous pedicellaria球形叉棘
pectinate pedicellaria栉状叉棘
straight pedicellaria直形叉棘
alveolate pedicellaria泡状叉棘
triphyllous pedicellaria三叶叉棘
rostrate pedicellaria嘴状叉棘
ophiocephalous pedicellaria蛇首叉棘
tetradactylous pedicellaria四指叉棘