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 | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Ginkgophyta |
| Class: | Ginkgoopsida |
| Order: | Ginkgoales |
| Family: | †Karkeniaceae Krassilov, 1972 |
| Genera | |
|
Karkenia Archangelsky, 1965 | |
References
- 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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