Back
Acer elenae
Acer elenae Cheleb. Trudy Geol. Inst. Ross. Akad. Nauk, (540): 256. 24-31 Dec 2005
- Name
- Acer elenae
- 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
- 256
- Year
- 2005
- Fossil Status
- leaves
- Stratigraphy
- Eocene
- Strat. comment
- Irgirnin Formation
- Location
- Podkagernaya Bay, 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
- 8101-63
- Diagnosis
- Leaves perfectly actinodromous, orbiculate to wide ovate, to 13—19 cm long, to 13-19 cm wide, shallowly 3-lobed, base truncate to rounded, margin inequally dentate or double dentate; lobes broadly triangular with attenuate apexes, originate predominantly at the upper half of the blade, sinuses between them very shallow; three primary veins make angles of 30-50°, running to the tops of the lobes; medial primary gives off 5-8 secondaries, lateral primaries give off series of basal and apical secondaries; secondary veins slightly curved, craspedodromous, lobal sinal bracing formed by branches from two (external) secondary veins (lower middle pair and lower apical lateral veins). Tertiaries percurrent, slightly curved, part of them forking, anastomosing, near the margin sometimes form angular loops, ending in teeth. Quaternary veins form coarse irregular meshes.