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Protopiceoxylon yukonense
Protopiceoxylon yukonense Dolezych, L. Reinh. Yukon Expl. & Geol., 2015 102. 2016
- Name
- Protopiceoxylon yukonense
- Rank
- Species
- Generic Name
- [Genus] Protopiceoxylon
- Authors (Pub.)
- Dolezych M.
Reinhardt L.
- Publication
- Protopiceoxylon yukonense sp. nov. – a remarkable extinct conifer from the Mackenzie Delta area, northern Yukon [2016]
- Journal
- Yukon Exploration and Geology
- Annee/Jahrgang
- 2015
- Page number
- 102
- Year
- 2016
- Fossil Status
- stems (wood)
- Stratigraphy
- Paleocene
- Strat. comment
- Moose Channel Formation
- Location
- Big Fish River area, northern Yukon and northwestern Mackenzie Delta area, Canada
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- Royal Ontario Museum, Toronto, Canada
- Repository Number
- collection Kevin Seymour, No. 63049, and Senckenberg Naturhistorische
Sammlungen Dresden, collection of Martina Dolezych, Hoyerswerda, prep. 190713/4c, t, r.
- Diagnosis
- Coniferous wood with distinct growth rings. The
transition from early to late wood is gradual. Early wood
tracheids are much wider than the late wood tracheids.
Pits in the radial cell walls of the early wood tracheids
are protopinoid. Axial parenchyma is seldom present and
diffuse. Rays are uniseriate and up to 20 cells high. Vertical
resin canals occur. Horizontal resin canals occur only
traumatic. Horizontal ray wall cells are about 4 to
5 μm thick and pitted. Tangential ray cell walls are often
3 to 4 μm thick and pitted. Ray tracheids are absent.
Cross–field pits are mostly 2–3 (4), predominantly circular
and piceoid.
