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Ginkgoxylon amurense
Ginkgoxylon amurense Afonin Paleontol. Zhurn., 2016, (5): 101. 2016
- Name
- Ginkgoxylon amurense
- Rank
- Species
- Generic Name
- [Genus] Ginkgoxylon
- Authors (Pub.)
- Afonin M. A.
- Publication
- Iskopaemaya drevesina Ginkgoxylon amurense sp. nov. (Ginkgoaceae) iz verkhnego mela Priamur'ya, rossiyskiy Dal'niy Vostok [2016]
- Journal
- Paleontologicheskii Zhurnal
- Annee/Jahrgang
- 2016
- Issue
- 5
- Page number
- 101
- Year
- 2016
- Fossil Status
- stems (wood)
- Stratigraphy
- Maastrichtian
- Strat. comment
- Tsagayan suite
- Location
- right bank of Dim River (left tributary of Amur River), Amur region, Russian Federation
- Paleoregion
- Eurasia (Far East)
Data for Holotypus
- Repository
- Institute of Biology and Soil Science, Russian Academy of Sciences, Vladivostok, Russian Federation
- Repository Number
- № 36A/7
- Diagnosis
- Growth rings are distinct. Resin canals are absent. Pitting on the radial walls of tracheids are uniseriate, biseriate, sometimes triseriate, opposite. Circular pits are 13–20 μm in diameter, elliptic pits – 13–18 × 14–20 μm in size. Crassulae are distinctly seen between biseriate and triseriate pits. Pitting on the tangential walls of tracheids are uniseriate; the pits are circular, 8–15 μm in diameter. Helical thickenings on the walls of tracheids are absent. Axial parenchyma cells are large, inflated, 50–170 µm high × 20–50 µm wide, mostly arranged in chains or occa sionally single. Rays are uniseriate, sometimes with biseriate parts (one to three layers). Height of uniseri ate rays are (1)3–6(14) cells. Horizontal and end walls of ray cells are smooth. Ray tracheids are absent. Cross field pits are cupressoid, 7–10 µm in diameter; there are one to six pits per cross field.
