Review
doi: 10.1073/pnas.97.24.12939.Progress in understanding angiosperm history, success, and relationships: Darwin's abominably "perplexing phenomenon"
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- PMID:11087846
- PMCID: PMC34068
- DOI: 10.1073/pnas.97.24.12939
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Review
Progress in understanding angiosperm history, success, and relationships: Darwin's abominably "perplexing phenomenon"
W L Crepet. Proc Natl Acad Sci U S A..
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Figures
(a) A typical morphology-based phylogeny of existing seed plants (plus the extinct Bennettitales) illustrating (in bold type) the anthophyte clade. (b) A composite phylogeny illustrating the realignment of Bennettitales and Gnetales based onITS and new morphological data (21).
A three-dimensionally preserved Cretaceous (Turonian) flower similar to modernNymphaea (scanning electron micrograph by Jennifer Svitko).
(a) A reconstruction ofPaleoclusia, a Cretaceous relative of modern Clusiaceae, a family closely associated with meliponine bee pollinators. (b) A reconstruction of an extinct (Cretaceous, Turonian) ericalean flower typical of a complex that includes several adaptations for pollination by derived anthophilous insects clawed petals and pollen in polyads. (Reconstructions by Michael Rothman.) (c) Appearance of floral innovations (●) during the Aptian (Ap)-Albian (Ab)-Cenomanian (C)-Turonian (T) interval vs. appearance of new floral characters/million years (○). (d) Angiosperm radiation in the Aptian–Turonian interval (based on ref. ; ○) vs. rate of appearance of new floral characters during the same interval (●).
Comment on
- Independent and combined analyses of sequences from all three genomic compartments converge on the root of flowering plant phylogeny.Barkman TJ, Chenery G, McNeal JR, Lyons-Weiler J, Ellisens WJ, Moore G, Wolfe AD, dePamphilis CW.Barkman TJ, et al.Proc Natl Acad Sci U S A. 2000 Nov 21;97(24):13166-71. doi: 10.1073/pnas.220427497.Proc Natl Acad Sci U S A. 2000.PMID:11069280Free PMC article.
References
- Darwin C. In: More Letters form Charles Darwin. Darwin F, Seward A C, editors. Vol. 2. New York: Appleton; 1903. pp. 239–240. and 20–22.
- Crane P R, Friis E M, Pedersen K R. Nature (London) 1995;374:27–33.
- Dilcher D L, Crane P R. Ann Mo Bot Gard. 1984;71:351–383.
- Crepet W L. Rev Paleob Palyn. 1996;90:339–359.
- Nixon K C. Cladistics. 1999;15:407–414. - PubMed
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