New evidence of reproductive organs of Glossopteris based on permineralized fossils from Queensland, Australia. I. Ovulate organ Homevaleia gen. nov.

Harufumi Nishida, Kathleen Pigg, Kensuke Kudo, John F. Rigby

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

This study describes Homevaleia gouldii H. Nishida, Pigg, Kudo et Rigby gen. et sp. nov., an ovule-bearing glossopterid organ, based on a combination of recently collected permineralized specimens from the Late Permian Homevale Station locality in the Bowen Basin of Queensland, Australia, and on previously studied material from the 1977 Gould and Delevoryas study. Homevaleia, which resembles the compression-impression genus Dictyopteridium, is an inrolled megasporophyll with a distinct keel that bears numerous (over 70) stalked ovules on its adaxial surface. Ovules are small, oval, with an elaborate mesh-like structure that is developed from the outermost integumentary layers. Specimens interpreted as representing different developmental stages show there is an apparent interrelationship between megagametophyte development and the opening of the surrounding fertile structure for pollination. Together, new information provided by this material enables better understanding of glossopterid reproductive structure and its function in one distinctive form.

Original languageEnglish (US)
Pages (from-to)539-549
Number of pages11
JournalJournal of Plant Research
Volume120
Issue number4
DOIs
StatePublished - Jul 1 2007

Keywords

  • Australia
  • Bowen Basin
  • Dictyopteridium
  • Glossopteris
  • Gondwana
  • Permian3

ASJC Scopus subject areas

  • Plant Science

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