Bauhinia miocenica

Name

Bauhinia miocenica

Rank

Species

Generic Name

[Genus] Bauhinia

Authors (Pub.)

Mehrotra R. C. Bera S. K. Basumatary S. K. Srivastava G.  

Publication

Study of fossil wood from the Middle–Late Miocene sediments of Dhemaji and Lakhimpur districts of Assam, India and its palaeoecological and palaeophytogeographical implications [2011/8]

Journal

Journal of earth system science

Volume

120

Issue

4

Page number

687

Year

2011

Fossil Status

stems (wood)

Stratigraphy

Miocene

Strat. comment

Tipam Group

Location

Subansiri riverbeds in Dhemaji, Dhemaji District, Assam, India

Paleoregion

Eurasia (Indostan)

Data for Holotypus

Repository

Birbal Sahni Institute of Palaeosciences, Lucknow, India

Repository Number

Specimen no. BSIP39840

Num

figure 5a–h

Pub.

Study of fossil wood from the Middle–Late Miocene sediments of Dhemaji and Lakhimpur districts of Assam, India and its palaeoecological and palaeophytogeographical implications [2011/8]

Diagnosis

Wood diffuse porous. Growth rings absent. Vessels t.d. 66–165 μm, r.d. 99–302 μm, solitary and in radial multiples of 2–3 (–4), 4–8 per mm2, tyloses not observed; vessel members storied, 190–600 μm in height; perforations simple; intervessel pits bordered, alternate, about 4–7 μm in diameter, vestured. Parenchyma banded, bands regular, continuous, alternating with fibre bands, broader than fibres; cells storied. Xylem rays exclusively uniseriate, rarely biseriate, irregularly storied, made up of both procumbent and upright cells, 5–15 cells in height; ray tissue weakly heterogeneous; ray cells crystalliferous. Fibres appearing storied at places, nonseptate, 11–22 μm in diameter and about 330–550 μm in length. Ripple marks present due to storied vessel elements, parenchyma cells and storied rays.