Ginkgoales

Ginkgoales; Temporal range:
	Leaves and seeds of Ginkgo yimaensis (left) Yimaia recurva (top right) and Karkenia henanensis (bottom right)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Gymnospermae
Division:	Ginkgophyta
Class:	Ginkgoopsida
Order:	Ginkgoales; Gorozhankin, 1904
Families
	Ginkgoaceae; †Karkeniaceae; †Umaltolepidaceae; †Yimaiaceae; †Schmeissneriaceae; †Hamshawviaceae (sometimes placed in its own order); Unnassigned to family †Ginkgoites (leaves); †Sphenobaiera (leaves); †Baiera (leaves); †Glossophyllum (leaves); †Trichopitys (ovulate organ); †Stachyopitys (pollen organ); ;

Ginkgoales are a gymnosperm order containing only one extant species: Ginkgo biloba, the ginkgo tree.^[1] The order has a long fossil record extending back to the Early Permian around 300 million years ago from fossils found worldwide.

^ Christenhusz, M. J. M., J. L. Reveal, A. Farjon, M. F. Gardner, R. R. Mill, and M. W. Chase (2011). A new classification and linear sequence of extant gymnosperms. Phytotaxa 19:55–70. http://www.mapress.com/phytotaxa/content/2011/f/pt00019p070.pdf

[1] Christenhusz, M. J. M., J. L. Reveal, A. Farjon, M. F. Gardner, R. R. Mill, and M. W. Chase (2011). A new classification and linear sequence of extant gymnosperms. Phytotaxa 19:55–70. http://www.mapress.com/phytotaxa/content/2011/f/pt00019p070.pdf

[1]

Ginkgoales Temporal range:

Leaves and seeds of Ginkgo yimaensis (left) Yimaia recurva (top right) and Karkenia henanensis (bottom right)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Gymnospermae
Division:	Ginkgophyta
Class:	Ginkgoopsida
Order:	Ginkgoales Gorozhankin, 1904
Families
Ginkgoaceae †Karkeniaceae †Umaltolepidaceae †Yimaiaceae †Schmeissneriaceae †Hamshawviaceae (sometimes placed in its own order) Unnassigned to family †Ginkgoites (leaves) †Sphenobaiera (leaves) †Baiera (leaves) †Glossophyllum (leaves) †Trichopitys (ovulate organ) †Stachyopitys (pollen organ)