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Pterocarya protostenoptera
Pterocarya protostenoptera Tanai J. Fac. Sci. Hokkaido Univ., Ser. 4, Geol., 11(2): 278. 20 Mar 1961
- Name
- Pterocarya protostenoptera
- Rank
- Species
- Generic Name
- [Genus] Pterocarya
- Authors (Pub.)
- Tanai T.
- Publication
- Neogene floral change in Japan [1961/3]
- Journal
- Journal of the Faculty of Science of the Hokkaido University
- Volume
- 11
- Issue
- 2
- Page number
- 278
- Year
- 1961
- Parent Taxon
- [Genus] Pterocarya
- Fossil Status
- fruits
- Stratigraphy
- Miocene
- Location
- Takamine coal mine, Tenoko-mura, Nishi-Okitama-gun, Yamagata Prefecture, Japan
- Paleoregion
- Eurasia (Japanese Archipelago)
Data for Holotypus
- Repository
- Geological Survey of Japan, Agency of Industrial Science and Technology, Tsukuba, Japan
- Repository Number
- GSJ-4227
- Diagnosis
- Fruits V-shaped in general outline, with two wings. Nuts small, oval in shape, 6 mm long to 3 mm wide, rounded at t'he base apex round and then acutely pointed ; on the surfaee having many radiated striations. Wings oblong-lanceolate, gradually narrowed at apex, 1,6 cm Iong and 5 mm wide on the middle; the two wings extending at an angles of about 60 to 70 degrees; numerous nerves thin, nearly straight and parallel to the margin; texture thin.
