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Pterocarya demidovii
Pterocarya demidovii Cheleb. Trudy Geol. Inst. Ross. Akad. Nauk, (540): 248. 24-31 Dec 2005
- Name
- Pterocarya demidovii
- Rank
- Species
- Generic Name
- [Genus] Pterocarya
- Authors (Pub.)
- Chelebaeva A. I.
- Publication
- Opisanie iskopaemykh rastenij [2005/12]
- Journal
- Trudy Geologicheskogo Instituta Rossijskoj Akademii Nauk
- Issue
- 540
- Page number
- 248
- Year
- 2005
- Fossil Status
- leaves
- Stratigraphy
- Eocene
- Strat. comment
- Irgirnin Formation
- Location
- Tommayvajam River, western Kamtschatka peninsula, Kamchatka Territory, Russian Federation
- Paleoregion
- Eurasia (Far East)
Data for Holotypus
- Repository
- Vernadsky State Geological Museum, Russian Academy of Sciences, Moscow, Russian Federation
- Repository Number
- 8150-33
- Diagnosis
- Leaflets wide-elliptic, to 13-15 cm in length, to 8 cm in wight, apex attenuate, base ineqilateral: cuneate at one side, rounded at another; margin serrate to double serrate; venation pinnate camptodromous, secondaries in 10-15 pairs, predominantly subparallel, wide-spaced, diverging from midvein at angles of 70-90° to 100-110° at the basal part, sometimes asymmetrical; tertiaries subperpendicular to secondary veins; higher-order veins form well distinct thinnest network; petiols very short or absent.
