Details

Autor(en) / Beteiligte

• Taylor, David Winship
• Hickey, Leo J.

Titel

An Aptian Plant with Attached Leaves and Flowers: Implications for Angiosperm Origin

Ist Teil von

• Science (American Association for the Advancement of Science), 1990-02, Vol.247 (4943), p.702-704

Ort / Verlag

United States: American Society for the Advancement of Science

Erscheinungsjahr

1990

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Recent phylogenetic studies and fossil finds support a new view of the ancestral angiosperm. A diminutive fossil angiosperm from the Aptian of Australia has attached leaves, with intermediate pinnate-palmate, low-rank venation, and lateral axes bearing pistillate organs subtended by bracts and bracteoles that are the oldest direct evidence of flowers. A variety of data suggests a similar morphology for the ancestral angiosperm. This hypothesis explains similarities between rhizomatous to herbaceous Magnoliidae and basal monocots, scarcity of early angiosperm wood, and lack of recognition of earlier remains.