cycad are gymnosperms distinguished by crowns of large pinnately compound leaves and by cones

310 1011 2519 ago all any authorities compound cones consists constitute contain crowns cycad cycadales cycadophyta distinguished division era existed extant extinct familiescycadaceae genera gymnospermous gymnosperms have known large leaves members mesozoic million not order palmlike pinnately plants refer some species stangeriaceae term three use woody years zamiaceaewhich