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Menispermites lebedevii
Menispermites lebedevii M. Moiseeva Paleontol. Zhurn., 2014, (6): 106. 2014
- Name
- Menispermites lebedevii
- Rank
- Species
- Generic Name
- [Genus] Menispermites
- Authors (Pub.)
- Moiseeva M. G.
- Publication
- Novye pokrytosemennye pozdnemelovoj ust'-emuneretskoj flory Tsentralnoj Chukotki [2014]
- Journal
- Paleontologicheskii Zhurnal
- Annee/Jahrgang
- 2014
- Issue
- 6
- Page number
- 106
- Year
- 2014
- Fossil Status
- leaves
- Stratigraphy
- Upper Cretaceous
- Strat. comment
- Santonian-Campanian
- Location
- mouth of the left tributary Emuneretveem River, upper reaches of Enmyvaam River, Tchukotka peninsula, Tchukotka Autonomous District, Russian Federation
- Paleoregion
- Eurasia (Far East)
Data for Holotypus
- Repository
- Geological Institute, Russian Academy of Sciences, Moscow, Russian Federation
- Repository Number
- 3392/68
- Diagnosis
- Leaves simple, entire, small or medium-sized, length to width ratio about 1 : 1. Leaf
blade rounded or ovate, slightly asymmetric. Leaf base
peltate eccentric. Leaf apex rounded. Leaf margin irregularly dentate, partly undulate. Teeth irregular,
usually flat, rounded triangular with rounded or rarely
acute apex. Venation suprabasal actinodromous,
craspedodromous or semicraspedodromous. 7–9 primary veins diverging radially from petiole. Upper 3–
5 primary veins thicker and longer than the rest.
Among them the midrib is more prominent, ascending
to the leaf apex. Lower 3–4 primary veins thin and
short, running to the base of leaf lamina into the pelta.
2–4 pairs of secondary veins deviate from the midrib at
the upper 1/3 part of leaf blade.
