Sphenobaiera
| Sphenobaiera Temporal range:
| |
|---|---|
| |
| Sphenobaiera digitata | |
| Scientific classification | |
| Kingdom: | |
| Division: | Ginkgophyta |
| Class: | |
| Order: | |
| Family: | |
| Genus: | Sphenobaiera Florin emend Harris & Millington[1]
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Sphenobaiera is a
form genus for plant leaves belonging to the order Ginkgoales found in rocks from Triassic to Cretaceous periods. The genus Sphenobaiera is used for plants with wedge-shaped leaves that can be distinguished from Ginkgo, Ginkgoites and Baiera by the lack of a petiole.[1] It became extinct about 72.6 million years ago. The family to which this genus belongs has not been conclusively established; an affinity with the Karkeniaceae has been suggested on morphological grounds.[2]
Locations
Sphenobaiera ikorfatensis (Seward) Florin f. papillata Samylina has been found in
ginkgophyte.[3]
Sphenobaiera has also been found in the
Upper Triassic period Santa Maria Formation of Brazil.[4]
References
 | This article about a prehistoric gymnosperm is a stub. You can help Wikipedia by expanding it. |
 | This article related to a Triassic plant is a stub. You can help Wikipedia by expanding it. |
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 | This article related to a Cretaceous plant is a stub. You can help Wikipedia by expanding it. |