Morphology of Bennettitalean fructifications

Authors

  • B.D. Sharma Department of Botany, University of Jodhpur, Jodhpur 342001, India

DOI:

https://doi.org/10.54991/jop.1989.1650

Keywords:

Morphology, Bennettitales, Fructifications, Mesozoic (India)

Abstract

The Bennettitales dominated the vegetation throughout the world during Mesozoic Era. In external morphology they were cycad-like, but had distinct type of fertile parts. Fructifications were monosporangiate or bisporangiate. In seed-bearing fructifications a compact layer of fertile and sterile scales surrounded the conical/hemispherical receptacle. On the basis of ontogeny and anatomy, both types of scales are described as appendicular structures and derived the fructification from Cordaianthus. Bisexual fructifications resemble  cycadeoideas. Male fructifications are unique and can be correlated neither with any known extinct nor extant plant. Bennettitales originated independently from protoseminales, a plexus which also gave rise to cordaitales and pteridosperms, Bennettitales ended abruptly.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

Downloads

Published

1989-12-31

How to Cite

Sharma, B. (1989). Morphology of Bennettitalean fructifications. Journal of Palaeosciences, 38, 163–170. https://doi.org/10.54991/jop.1989.1650

Issue

Section

Research Articles

Most read articles by the same author(s)

1 2 > >>