Williamsoniaceae

Williamsoniaceae
Temporal range:
Restoration of Wielandiella
Diagram of Weltrichia, a male reproductive structure
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Order: †Bennettitales
Family: †Williamsoniaceae
(Carruthers) Nathorst, 1913
Genera
  • Wielandiella (whole plant)
  • Kimuriella (whole plant)
  • Williamsoniella coronata (whole plant)
  • Pterophyllum (leaf, reproductive structure)
  • Zamites (leaf)
  • Otozamites (leaf)
  • Nilssoniopteris (leaf)
  • Anomozamites (leaf)
  • Eoginkgoites (leaf)
  • Williamsonia (female reproductive structure)
  • Williamsoniella (bisexual reproductive structure)
  • Weltrichia (male reproductive structure)
  • Bucklandia (axes)
  • Bennettistemon (male pollen organ)
  • Vardekloeftia (female seed cone)
  • Ischnophyton

Williamsoniaceae is a family within the Bennettitales, an extinct group of seed plants. Members of this family are believed to have been around two meters tall and with widely serrate leaves along a central stem. Reproductive organs of the Williamsoniaceae have varied widely in the fossil record but almost all have been found to be borne on stalks emerging from a ring of leaves.

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