The cycads: slow-growing seed plants with a stout, often unbranched trunk topped by a crown of stiff, palm-like leaves, though they are unrelated to true palms. Cycadophyta was far more diverse during the Mesozoic era; the surviving species are concentrated in tropical and subtropical regions and many are now threatened by habitat loss and over-collection.
Facts
Disputed
Member Species/Taxa CountApproximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized. Taxonomic Rank Scientific Name Era First Appeared Classification
Living or Extinct Connections
Sources
1. Wikidata (taxon extant/extinct status)
Wikimedia Foundation / Wikidata contributorsQ1089795, descriptionView the Source 2. Catalogue of Life
3. Paleobiology Database: Taxon record for Cycadophyta
Paleobiology DatabaseTaxon record, first appearance (firstapp_max_ma, early_interval)Quote, Taxon record, first appearance (firstapp_max_ma, early_interval)
"taxon_name": "Cycadophyta" ... "firstapp_max_ma": 443.1 ... "early_interval": "Rhuddanian"
Wikidata: Cycadophyta
Wikidata Q157114, class allow-list match (w-wdresolver-0926)View the Source Cycad - Wikipedia
In Group: Seed Plant Divisions, LeadQuote, In Group: Seed Plant Divisions, Lead
Cycads, constituting the division Cycadophyta-are seed plants with a stout, woody cylindrical trunk with a crown of large, hard, stiff, evergreen and usually pinnate (feather-shaped) leaves.
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