Elaeocarpus prelanceifolius

Name

Elaeocarpus prelanceifolius

Rank

Species

Original spelling

prelanceaefolius

Generic Name

[Genus] Elaeocarpus

Authors (Pub.)

Bera S. De A. De B.  

Publication

First record of Elaeocarpus Linn. fruits from the Upper Siwalik sediments (Kimin Formation) of Arunachal Pradesh, India [2004/9]

Journal

Journal of the Geological Society of India

Volume

64

Issue

3

Page number

350

Year

2004

Fossil Status

fruits

Stratigraphy

Pliocene

Strat. comment

Upper Siwaliks (Kimin Formation)

Location

along the road to Itanagar from Banderdewa, Papumpare District, Arunachal Pradesh, India

Paleoregion

Eurasia (Indostan)

Data for Holotypus

Repository

Botany Department, University of Kolkata, Kolkata, India

Repository Number

CU / PPL / AP 1-5

Num

2 A-C, F-I

Descr.

holotype not specified among illustrations

Pub.

First record of Elaeocarpus Linn. fruits from the Upper Siwalik sediments (Kimin Formation) of Arunachal Pradesh, India [2004/9]

Diagnosis

The fruits are drupes, ovoid to ellipsoid, 3-loculed; mesocarp preserved in traces in the form of thin carbonaceous film; stony endocarp well preserved, pyrenes oblong, terete; longitudinally 29-34 mm in length with equatorial diameter 18-22 mm; endocarp rugose, twolayered, outer light-coloured layer 2.5 mm thick at the central part and gradually tapering towards the two ends, while the inner darker layer is uneven in thickness ranging from 2-3 mm; single-seeded, embryo preserved, dicotyledonous. In T.S. traces of mesocarp consisting of non-compact parenchymatous tissue in which cell dimensions increase from the periphery inwards are found. The endocarp consists of deep, oval-elliptical grooves and is made up of sclereids forming the stone of the fruit. Sclereids are mostly brachysclereids, sometimes osteosclereids, with thick wall, narrow lumen and wall with numerous canaliculi. Sclereids with thinner wall and broader lumen are present in the inner layer of the stone.