- Cycadales, order Cycadales - primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms
--1 is a kind of plant order
--1 is a member of
--1 has members:Cycadopsida, class Cycadopsida, Cycadophytina, subdivision Cycadophytina, Cycadophyta, subdivision Cycadophyta Cycadaceae, family Cycadaceae, cycad family; Zamiaceae, family Zamiaceae, zamia family