Palmoxylon deoriense

Name

Palmoxylon deoriense

Rank

Species

Original spelling

deoriensis

Generic Name

[Genus] Palmoxylon

Authors (Pub.)

Khan M. A. Mandal K. Bera S.  

Publication

A new species of permineralized palm stem from the Maastrichtian–Danian sediments of Central India and its palaeoclimatic signal [2019/5]

Journal

Botany Letters

Volume

166

Issue

2

Page number

3 [191]

Year

2019

Fossil Status

stems (wood)

Stratigraphy

Maastrichtian

Strat. comment

Deccan Intertrappean

Location

Deori village (location: N23°11.757′, E080°32.679′; elevation: 574 m), Dindori District, Madhya Pradesh, India

Paleoregion

Gondwana (Indostan)

Data for Holotypus

Repository

Palaeobotany and Palynology Laboratory, Department of Botany, Sidho-Kanho-Birsha University, Purulia, India

Repository Number

SKBU/PPL/D5

Num

1b, 2–6, 7(a)

Pub.

A new species of permineralized palm stem from the Maastrichtian–Danian sediments of Central India and its palaeoclimatic signal [2019/5]

Diagnosis

Fossil stem with well-developed outermost cortex (CT), sub-cortical (SZ) and central zones (CZ); organization and distribution of fibrovascular bundles (fvb) more or less regular throughout the transverse section; the fibrous vascular surface ratio is constant throughout the transverse section; prominent dorsal sclerenchymatous sheath present, shape reniforma; no modification of the fibrous dorsal cap between the sub-cortical zone and the central zone; usually one, large (diameter > 183 μm) and excluded metaxylem vessel in each fvb, sometimes 2 metaxylem vessels present; size of the fvb ranges from 800 × 1300 to 900 × 1500 μm; 2 to 11 prominent small protoxylem vessels in the leaf-trace bundles (ltb) in both SZ and CZ; one to two layered tabular parenchyma around the fibrous part of fvb; welldeveloped radiating parenchyma around the vascular part of fvb; median sinus round to slightly concave; stegmatas not visible; absence of both diminutive fibrovascular bundles and fibrous bundles; characteristically highly compact ground tissue without lacunae throughout the section; thick-walled parenchyma cells generally rectangular to elongated, frequency of elongated cells greater in central zone; no sustained growth of ground parenchyma; absence of centrifugal differentiation of fibrous part of fvb and zone of transition between SZ and CZ; more or less constant density of fibrovascular bundles throughout the central cylinder of the stem.