Yimaia

Yimaia; Temporal range:
	Restoration of Yimaia recurva from the Jurassic of China
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Gymnospermae
Division:	Ginkgophyta
Class:	Ginkgoopsida
Order:	Ginkgoales
Family:	†Yimaiaceae; Zhou, 1997
Genus:	†Yimaia; Zhou et Zhang, 1988
Species
	Yimaia capituliformis Zhou, Zheng and Zhang, 2006; Yimaia qinghaiensis Wu, Yang and Zhou, 2006; Yimaia recurva (type) Zhou et Zhang, 1988;

Yimaia is an extinct genus of Ginkgoalean tree, and the only member of the family Yimaiaceae. In botanical form classification, its a form taxon for ginkgoalean ovulate organs. Yimaia species are distinguished from other Ginkgoales by the presence of "Ovulate organs consisting of a peduncle and up to eight or nine terminal, sessile, contiguous and orthotropous (straight, upright and with a micropyle at apex) ovules." The ovules are associated with leaves of either Baiera or Ginkgoites leaf morphospecies.^[1] Fossils have been found in Middle Jurassic deposits in China.

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

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

[1]

Yimaia Temporal range:

Restoration of Yimaia recurva from the Jurassic of China
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Gymnospermae
Division:	Ginkgophyta
Class:	Ginkgoopsida
Order:	Ginkgoales
Family:	†Yimaiaceae Zhou, 1997
Genus:	†Yimaia Zhou et Zhang, 1988
Species
Yimaia capituliformis Zhou, Zheng and Zhang, 2006 Yimaia qinghaiensis Wu, Yang and Zhou, 2006 Yimaia recurva (type) Zhou et Zhang, 1988