University of Tasmania
Browse

File(s) not publicly available

Ceratopetalum fruits from Australian cainozoic sediments and their significance for petal evolution in the genus

journal contribution
posted on 2023-05-16, 11:53 authored by Barnes, RW, Robert HillRobert Hill
Ceratopetalum Sm. fruits are characterised by 4-6 enlarged woody sepals radiating from a central disk, a semi-inferior ovary, anthers between and above each sepal and three-trace sepal venation with a prominent intra-sepal vein. Two new species of Ceratopetalum are described from fruits extracted from Australian Cainozoic sediments, C. westermannii and C. maslinensis. The presence of Ceratopetalum in Middle Eocene Maslin Bay sediments, South Australia, indicates a more widespread geographic distribution for the genus during the Cenozoic. Petally is present in one extant and two fossil species and probably represents the ancestral state despite apetally in the oldest known fossil. Petals have probably been secondarily lost in response to fruit specialisation or a change in pollinator vector.

History

Publication title

Australian Systematic Botany

Volume

12

Issue

5

Pagination

635-645

ISSN

1030-1887

Department/School

School of Natural Sciences

Publisher

CSIRO

Place of publication

150 Oxford St, Po Box 1139, Collingwood, Australia, Victoria, 3066

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the environmental sciences

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC