Shifting functional roles and the evolution of conifer pollen-producing and seed-producing cones.
In: Paleobiology, Jg. 37 (2011-09-01), Heft 4, S. 587-602
academicJournal
Zugriff:
The article discusses a research study on the evolution and shift in functional roles of conifer seed-producing and pollen-producing cones. Morphological data for analyses include 28 Paleozoic seed cone species, 30 Jurassic species, 24 Triassic species while pollen cones include 16 Triassic species, 14 Cretacous species and 12 Paleozoic species. Results revealed lesser morphological diversity in pollen cones than seed cones and early divergence of lineage in pollen cones of Cupressaceae sensu stricto and Cupressaceae sensu lato. It adds key morphological features of seed cones absent in pollen cones including fleshy seed cones with one or two cone units plotting high principal coordinate (PCO) axis positive values and seed cones with large unit plotting negative PCO axis values.
Titel: |
Shifting functional roles and the evolution of conifer pollen-producing and seed-producing cones.
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Autor/in / Beteiligte Person: | Leslie, Andrew B. |
Zeitschrift: | Paleobiology, Jg. 37 (2011-09-01), Heft 4, S. 587-602 |
Veröffentlichung: | 2011 |
Medientyp: | academicJournal |
ISSN: | 0094-8373 (print) |
DOI: | 10.1666/10049.1 |
Sonstiges: |
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