They are 340 million years old, outlived the dinosaurs and survived mass extinction in three global catastrophes.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/south-africas-ancient-cycad-plants-under-threat-poachers
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/guardian-uk
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biodiversity
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-africa
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/illegal-trade
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/flora
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa