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Pterygota eocenica
Pterygota eocenica Anum. Shukla, R.C. Mehrotra, S.N. Ali J. Asian Earth Sci., 166: 156. 23 Jul 2018
- Name
- Pterygota eocenica
- Rank
- Species
- Generic Name
- [Genus] Pterygota
- Authors (Pub.)
- Shukla A.
Mehrotra R. C.
Ali S. N.
- Publication
- Early Eocene leaves of northwestern India and their response to climate
change [2018/7]
- Journal
- Journal of Asian Earth Sciences
- Volume
- 166
- Page number
- 156
- Year
- 2018
- Fossil Status
- leaves
- Stratigraphy
- Ypresian
- Strat. comment
- Palana Formation
- Location
- Gurha lignite mine (East), Bikaner district, Rajasthan, India
- Paleoregion
- Eurasia (Indostan)
Data for Holotypus
- Repository
- Birbal Sahni Institute of Palaeosciences, Lucknow, India
- Repository Number
- BSIP 41607
- Diagnosis
- Leaf symmetrical, nearly complete, mesophyll, shape orbiculate to suborbiculate, preserved lamina length 19.77 cm, preserved width 16.54 cm; apex acute; base cordate; margin entire, slightly undulating; texture chartaceous; petiole normal; venation actinodromous, basal, perfect, five veins arising from the base, middle vein almost straight, moderate in thickness; lateral pair of two veins of same thickness as middle vein but arising at acute angle, curving upward and running up to nearly half of the length of lamina, the outermost lateral pair relatively thin and arising at right angle to middle vein; distance between two secondaries 1.5–5.6 cm, angle of divergence acute, alternate, smoothly curved, joining superaadjacent secondaries either directly or through tertiary veins; intersecondary veins absent; tertiary veins percurrent, simple, convex to sinuous, angle of origin AA to AR, alternate to opposite; marginal ultimate venation looped; quaternary veins irregular reticulate; areoles imperfect, random.
