Ginkgoidae is a subclass of Equisetopsida in the sense used by Mark W. Chase and James L. Reveal in their 2009 article "A phylogenetic classification of the land plants to accompany APG III."^[1] This subclass contains the single extant genus Ginkgo under order Ginkgoales, family Ginkgoaceae.^[2] Its only extant species is Ginkgo biloba, the Maidenhair Tree.

Phylogeny

The following diagram shows a likely phylogenic relationship between subclass Ginkgoidae and the other Equisetopsida subclasses.^[2]

References

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The Ginkgoaceae is a family of gymnosperms which appeared during the Mesozoic Era, of which the only extant representative is Ginkgo biloba, which is for this reason sometimes regarded as a living fossil. Formerly, however, there were several other genera.

Principal genera

• Baiera †
• Ginkgo
• Ginkgoites †
• Ginkgoïdium †
• Phoenicpsis †
• Polyspermophyllum †
• Trichopitys †