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:9409BEDC-AD94-34E6-89F1-E5BBDFBCF0BB species
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Acer eotetramerum

Acer eotetramerum Cheleb. Trudy Geol. Inst. Ross. Akad. Nauk, (540): 255. 24-31 Dec 2005
Name
Acer eotetramerum
Rank
Species
Generic Name
[Genus] Acer
Authors (Pub.)
Chelebaeva A. I.  
Publication
Opisanie iskopaemykh rastenij [2005/12]
Journal
Trudy Geologicheskogo Instituta Rossijskoj Akademii Nauk
Issue
540
Page number
255
Year
2005
Fossil Status
leaves
Stratigraphy
Eocene
Location
upper reaches of Levaja Vorovskaja River, Chernaja Mountain, 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
8301-223
Num
pl. 26, fig. 5; pl. 24, fig. 2
Pub.
Opisanie iskopaemykh rastenij [2005/12]
Diagnosis
Leaves palmate, 3-5 lobate, central lobe wide, more or less long, lateral lobes short; lobal apices acuminate, rarely acute, base cordate, margin double dentate to lobate-dentate, petiole more than half of leaves length; venation palmate, predominantly with 5 primaries, craspedodromous. Angles between inner primaries - 45-60°, angles between central and external primaries - more than 90°, sometimes 100-110°; lobal sinal bracing is formed by the merging of external branches from a medial secondary vein and apical branches from lateral primaries (type A [Wolfe, Tanai, 1987]). Secondary veins in 5-7 pairs, subparallel, ending in teeth, tertiaries predominantly convex to margin, form scalariform anastomoses.

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