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Temporal range: Jurassic–Cretaceous
Three large, round fossilized structures on display
Cycadeoidea (a member of the Cycadeoidaceae) on display at the Naturmuseum Senckenberg
Scientific classification
Kingdom: Plantae
(unranked): Spermatophyta
Division: Cycadeoidophyta
Order: Bennettitales
Family: Cycadeoidaceae

Cycadeoidaceae is a family of bennettitalean plants which flourished in the Mesozoic era. Two genera, Cycadeoidea and Monanthesia, are currently recognised though most species are poorly known.[1]


  1. ^ Watson, Joan; Lydon, Susannah J (2004). "The bennettitalean trunk genera Cycadeoidea and Monanthesia in the Purbeck, Wealden and Lower Greensand of southern England: A reassessment". Cretaceous Research. 25: 1. doi:10.1016/j.cretres.2003.10.003.