Karkeniaceae

Karkeniaceae is an extinct family in the order Ginkgoales. It contains the single genus Karkenia. It is distinguished by "Ovulate organs consisting of a peduncle and helically arranged, up to about 100 small, orthotropous but incurved ovules; pedicel present; nucellus largely free." Associated with leaves of the Ginkgoites, Sphenobaiera and Eretmophyllum types. It is known from the Hettangian to Aptian of both Hemispheres.[1]

Karkeniaceae
Temporal range: Hettangian–Aptian
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Ginkgophyta
Class: Ginkgoopsida
Order: Ginkgoales
Family: †Karkeniaceae
Krassilov, 1972
Genera

Karkenia Archangelsky, 1965

References
  1. Zhou, Zhi-Yan (March 2009). "An overview of fossil Ginkgoales". Palaeoworld. 18 (1): 1–22. doi:10.1016/j.palwor.2009.01.001.


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