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Paraphyllanthoxylon cenomanianum
Paraphyllanthoxylon cenomanianum K. Takah., Mits. Suzuki I.A.W.A. J., 24(3): 289. 2003
- Name
- Paraphyllanthoxylon cenomanianum
- Rank
- Species
- Original spelling
- cenomaniana
- Generic Name
- [Genus] Paraphyllanthoxylon
- Authors (Pub.)
- Takahashi K.
Suzuki M.
- Publication
- Dicotyledonous fossil wood flora and early evolution of wood characters in the Cretaceous of Hokkaido, Japan [2003]
- Journal
- IAWA Journal
- Volume
- 24
- Issue
- 3
- Page number
- 289
- Year
- 2003
- Fossil Status
- stems (wood)
- Stratigraphy
- Cenomanian
- Strat. comment
- Member Mf, Middle part of the Yezo Group
- Location
- Shinonome-sawa, Obira-cho, Rumoi County, Hokkaido, Japan
- Paleoregion
- Eurasia (Japanese Archipelago)
Data for Holotypus
- Repository
- Botanical Garden, Tohoku University, Sendai, Japan
- Repository Number
- TK 97191
- Diagnosis
- Growth rings absent. Wood diffuse-porous. Vessels very few to few, 6-16 (mean 11) per square mm; solitary (46%) and in radial
multiples of 2-5; round in cross section; 80-240 (mean 174) x 90-310 (mean 201) um in tangential x radial diameter; tyloses abundant, obscuring vessel element length; perforation plates exclusively simple; intervessel pits alternate, large (13 x 8 um in radial x vertical diameter), horizontally elongated; vessel-ray pits simple, large, round to elliptical, horizontally or vertically elongated (20 x 9 um or 8 x 24 Jim in radial x vertical diameter).
Imperforate tracheary elements septate fibers, without pits. Axial parenchyma scanty, paratracheal, no crystalliferous elements observed .
Rays up to 5 cells (140 um) wide; 0.32-20.5 mm high; heterocellular; procumbent cells 50 x 20 Jim in radial length x height; upright cells 30 x 45 um in radial length x height; uniseriate rays rare; no crystalliferous elements observed.
