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Ulmus priamurica
Ulmus priamurica Blokhina, O.V. Bondarenko Paleontol. Zhurn., 2018, (2): 101. 2018
- Name
- Ulmus priamurica
- Rank
- Species
- Generic Name
- [Genus] Ulmus
- Authors (Pub.)
- Blokhina N. I.
Bondarenko O. V.
- Publication
- Iskopaemaja drevesina Ulmus priamurica sp. nov. (Ulmaceae) iz miotsenovykh otlozhenij Erkovetskogo burougol'nogo bassejna (Priamur'je) [2018]
- Journal
- Paleontologicheskii Zhurnal
- Annee/Jahrgang
- 2018
- Issue
- 2
- Page number
- 101
- Year
- 2018
- Fossil Status
- stems (wood)
- Stratigraphy
- Miocene
- Strat. comment
- Sazankovian suite
- Location
- Yuzhnyj razrez, Erkovetskii Brown Coal Bassin, 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
- Coll. 22, № ER 22/3–115
- Diagnosis
- Wood ring-porous. Growth rings distinct. Earlywood vessels in 1–2 almost continuous tangential bands, latewood vessels in wavy tangential to diagonal (oblique) bands of 3–6 vessels. Early wood vessels 66–176×120–218 µm in diameter, late wood vessels 19–30 µm in diameter. Vessel elements 160–288 µm in length. Vessel walls 3.0–3.5 µm thick. Simple perforation plates. Intervessel pitting alternate, with up to 20 bordered pits per width of vessel; pits 6–10 µm in diameter. Helical thickenings in narrow vessel elements, also in vascular tracheids. Thin-walled tyloses common in earlywood vessels. Axial parenchyma scanty paratracheal and marginal; parenchyma strands
of 4–6 cells. Fibre walls 4.0–4.5 µm thick. Rays uniseriate to 6-seriate, 1–50 cells high, homocellular, composed of procumbent cells; multiseriate rays
sometime with uniseriate ends of 1–4 cells. Storied structures absent.