The INTERNATIONAL FOSSIL PLANT NAMES INDEX
Global registry of scientific names of fossil organisms covered by the International Code of Nomenclature for Algae, Fungi, and Plants and the International Code of Zoological Nomenclature © 2014-2024

IDNAME urn:idName:ifpni.org:species:4F26DBBA-735D-4C4B-9215-539271276CDC species
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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.

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