Buchanania palaeosessilifolia

Name

Buchanania palaeosessilifolia

Rank

Species

Generic Name

[Genus] Buchanania

Authors (Pub.)

Prasad M. Kannaujia A. K. Alok Singh S. K.  

Publication

Plant megaflora from the Siwalik (Upper Miocene) of Darjeeling District, West Bengal, India and its palaeoclimatic and phytogeographic significance [2015/12]

Journal

Palaeobotanist

Volume

64

Issue

1–2

Page number

44

Year

2015

Fossil Status

leaves

Stratigraphy

Tortonian

Strat. comment

Geabdat Sandstone Formation (Middle Siwalik); Upper Miocene (Sarmatian to Pontian)

Location

Lish River Section, Oodlabari area, Darjeeling District, West Bengal, India

Paleoregion

Eurasia (Indostan)

Data for Holotypus

Repository

Birbal Sahni Institute of Palaeosciences, Lucknow, India

Repository Number

40359

Num

13: 1

Pub.

Plant megaflora from the Siwalik (Upper Miocene) of Darjeeling District, West Bengal, India and its palaeoclimatic and phytogeographic significance [2015/12]

Data for Paratypus

Repository

Birbal Sahni Institute of Palaeosciences, Lucknow, India

Repository Number

40362 [pl. 13: 5]; 40361 [pl. 13: 3];

Num

13: 3, 5

Pub.

Plant megaflora from the Siwalik (Upper Miocene) of Darjeeling District, West Bengal, India and its palaeoclimatic and phytogeographic significance [2015/12]

Diagnosis

Leaf simple, asymmetrical, elliptic to narrow elliptic; preserved size 10.9 x 4.0 cm, 8.0 x 4.5 cm, 8.0 x 4.3 cm and 7.5 x 4.5 cm; apex broken; base acute; margin entire; texture chartaceous; venation pinnate, craspedodromous to eucamptodromous; primary vein single, prominent, almost straight, stout; secondary veins 15 to 16 pairs visible, 0.5 to 1.1 cm apart, alternate to sub-opposite, unbranched, angle of divergence (60°–70°), moderate acute, uniformly curved up, curvature more pronounced near the margin; tertiary veins fine, angle of origin, RR, percurrent, straight to sinuous, branched, oblique in relation to midvein, predominantly alternate and close to nearly distant.