Williamsoniaceae

Taxonavigation

Superregnum: Eukaryota
Regnum: Plantae
Divisio: Tracheophyta
Divisio: Cycadophyta
Classis: Cycadopsida
Ordo: †Bennettitales
Familia: †Williamsoniaceae
Genera: †Ptilophyllum – †Zamites

Name

Williamsoniaceae (Carruthers, 1870) Nathorst, 1913

References

• Carruthers, W. 1870. On fossil Cycadean stems from the Secondary rocks of Britain. Transactions Linnean Society London, 26: 675-708.
• Nathorst, A.G. 1913. How are the names Williamsonia and Wielandiella to be used? A question of nomenclature. Geology Foeren. Stockh. Foerenhandl, 35: 361-366.