Vatica siwalica

Name

Vatica siwalica

Rank

Species

Generic Name

[Genus] Vatica

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

28

Year

2015

Fossil Status

leaves

Stratigraphy

Tortonian

Strat. comment

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

Location

Sevok Road Section, Oodlabari area, Darjeeling District, West Bengal, India

Paleoregion

Eurasia (Indostan)

Data for Holotypus

Repository

Birbal Sahni Institute of Palaeosciences, Lucknow, India

Repository Number

40335

Num

6: 6, 7, 10

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

40336

Num

7: 8

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, symmetrical, elliptic; preserved size 6.0 x 3.5 cm and 6.9 x 3.5 cm; apex acute; base wide acute; margin entire; texture chartaceous; petiole small, 0.2 cm long, normal; venation pinnate, eucamptodromous; primary vein single, prominent, almost straight, stout; secondary veins 6–7 pairs visible, 0.6 to 1.6 cm apart, alternate to sub–opposite, angle of divergence (45–65°), variation in angle of divergence, narrow to moderate acute, lower secondaries are more acute than upper secondaries; intersecondary veins present but not frequent; tertiary veins fine, angle of origin usually RR, percurrent, straight to sinuous, branched, oblique in relation to mid vein, predominantly alternate and close.