Mesozoic cupules and the origin of the angiosperm second integument.
@article{Shi2021MesozoicCA, title={Mesozoic cupules and the origin of the angiosperm second integument.}, author={Gongle Shi and Fabiany Herrera and Patrick S. Herendeen and Elizabeth G. Clark and Peter R. Crane}, journal={Nature}, year={2021} }
The second integument of the angiosperm ovule is unique among seed plants, with developmental genetics that are distinct from those of the inner integument1. Understanding how the second integument should be compared to structures in other seed plants is therefore crucial to resolving the long-standing question of the origin of angiosperms2-6. Attention has focused on several extinct plants with recurved cupules that are reminiscent of the anatropous organization of the basic bitegmic ovules of…
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References
SHOWING 1-10 OF 19 REFERENCES
Angiosperm ovules: diversity, development, evolution.
- BiologyAnnals of botany
- 2011
The present review provides a synthetic treatment of several aspects of the sporophytic part of ovule diversity, development and evolution, based on extensive research on the vast original literature and on experience from my own comparative studies in a broad range of angiosperm clades.
Anatomy of umkomasia (corystospermales) from the triassic of antarctica.
- MedicineAmerican journal of botany
- 2002
Both anatomical and morphological features support interpretation of corystosperm reproductive structures as branching systems rather than as compound sporophylls.
Integrating Molecular Phylogenetic and Paleobotanical Evidence on Origin of the Flower
- BiologyInternational Journal of Plant Sciences
- 2008
Results and developmental genetic data are consistent with homology of the angiosperm bitegmic ovule with the cupule of glossopterids and Caytonia, while the carpel could represent a leaf and a cupule‐bearing axillary branch in living basal angiosperms.
Origin of Angiosperms
- Environmental Science
- 1978
In the apparent absence of critical fossil evidence, ideas on the origin of angios perms have been based largely on comparative morphology of modern plants, including Axelrod's theory that the angiosperms originated and began to diversify extensively in tropical upland areas as early as the Permian or Triassic.
After a dozen years of progress the origin of angiosperms is still a great mystery
- BiologyNature
- 2007
The ‘anthophyte theory’, the dominant concept of the 1980s and 1990s, has been eclipsed; Gnetales, previously thought to be closest to the angiosperms, are related instead to other extant gymnos perms, probably most closely to conifers.
Diversity and homologies of corystosperm seed-bearing structures from the Early Cretaceous of Mongolia
- Environmental ScienceJournal of Systematic Palaeontology
- 2019
The consistent reproductive architecture of the seed-bearing structures in all three corystosperm species, with a bract subtending a variously modified axis bearing ovules, is similar to the situation in Ginkgo and conifers.
Habit and Ecology of the Petriellales, an Unusual Group of Seed Plants from the Triassic of Gondwana
- Environmental ScienceInternational Journal of Plant Sciences
- 2014
The hitherto enigmatic Petriellales are now among the most comprehensively reconstructed groups of extinct seed plants and emerge as promising candidates for elucidating the mysterious origin of the angiosperm carpel.
Geminispermum, an Early Cretaceous (early–middle Albian) cupulate unit from the angiosperm-dominated Puddledock flora of eastern North America
- Environmental ScienceActa Palaeobotanica
- 2019
Geminispermum is currently the only unequivocal seed plant cupule recovered from the Early Cretaceous Potomac Group and is distinct from all previously described cupulate reproductive structures.
New perspectives on the Mesozoic seed fern order Corystospermales based on attached organs from the Triassic of Antarctica.
- Environmental ScienceAmerican journal of botany
- 2000
Phylogenetic analysis suggests that the corystosperm cupule is an unlikely homologue for the angiosperm carpel or outer integument, and studies that treat Dicroidium leaf morphospecies as proxies for biological species of entire plants should be reconsidered.
A hidden cradle of plant evolution in Permian tropical lowlands
- Environmental Science, GeographyScience
- 2018
Mixed plant-fossil assemblages from Permian equatorial lowlands in present-day Jordan are presented that harbor precocious records of three major seed-plant lineages that all became dominant during the Mesozoic, including the oldest representative of any living conifer family.