Results 81 to 90 of about 189 (105)
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Review of Palaeobotany and Palynology, 1991
Abstract The type specimens of permineralized Marattiales from the Stephanian and Autunian of France, assigned to the genera Acitheca Schimper, Scaphidopteris Renault, Sturiella Weiss and Lagenopteris Renault have been re-examined and photographically illustrated for the first time.
Jean Galtier
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Abstract The type specimens of permineralized Marattiales from the Stephanian and Autunian of France, assigned to the genera Acitheca Schimper, Scaphidopteris Renault, Sturiella Weiss and Lagenopteris Renault have been re-examined and photographically illustrated for the first time.
Jean Galtier
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American Journal of Botany, 1985
Two new species of the late Paleozoic fern Scolecopteris (Marattiales) are described and their relationships within the genus are discussed. Scolecopteris charma sp.n., from Steubenville, Ohio (Duquesne Coal, Upper Pennsylvanian), is similar to species in the Oliveri group, while S. gnoma sp.n.
A. D. Lesnikowska, M. A. Millay
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Two new species of the late Paleozoic fern Scolecopteris (Marattiales) are described and their relationships within the genus are discussed. Scolecopteris charma sp.n., from Steubenville, Ohio (Duquesne Coal, Upper Pennsylvanian), is similar to species in the Oliveri group, while S. gnoma sp.n.
A. D. Lesnikowska, M. A. Millay
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Review of Palaeobotany and Palynology, 2021
Abstract A new species of the Marattialean fern frond Rothwellopteris is proposed for specimens preserving both morphology and anatomy from the Wuchiapingian–Changshingian (late Permian) aged Xuanwei Formation of South China. Fronds are at least bipinnate and bear falcate, pecopteroid pinnules with a thin lamina.
Jason Hilton, Xiao-Yuan He
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Abstract A new species of the Marattialean fern frond Rothwellopteris is proposed for specimens preserving both morphology and anatomy from the Wuchiapingian–Changshingian (late Permian) aged Xuanwei Formation of South China. Fronds are at least bipinnate and bear falcate, pecopteroid pinnules with a thin lamina.
Jason Hilton, Xiao-Yuan He
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Molecular Phylogenetics and Evolution, 2015
The "Monilophyte" clade comprising ferns, horsetails and whisk ferns receives unequivocal support from molecular data as the sister clade to seed plants. However, the branching order of its earliest emerging lineages, the Equisetales (horsetails), the Marattiales, the Ophioglossales/Psilotales and the large group of leptosporangiate ferns has remained ...
Felix Grewe +2 more
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The "Monilophyte" clade comprising ferns, horsetails and whisk ferns receives unequivocal support from molecular data as the sister clade to seed plants. However, the branching order of its earliest emerging lineages, the Equisetales (horsetails), the Marattiales, the Ophioglossales/Psilotales and the large group of leptosporangiate ferns has remained ...
Felix Grewe +2 more
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Review of Palaeobotany and Palynology, 2013
Abstract A new species of permineralised marattialean fern trunk is described from Lopingian (late Permian) aged volcaniclastic tuffs from Panxian County, western Guizhou Province, China and named Psaronius xuii sp. nov. The stem has vascular bundles that are encircled by a bi-layered sheath and has a ground tissue consisting of thicker-walled and ...
Longyi Shao +2 more
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Abstract A new species of permineralised marattialean fern trunk is described from Lopingian (late Permian) aged volcaniclastic tuffs from Panxian County, western Guizhou Province, China and named Psaronius xuii sp. nov. The stem has vascular bundles that are encircled by a bi-layered sheath and has a ground tissue consisting of thicker-walled and ...
Longyi Shao +2 more
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Sporogenesis in Eusporangiate Ferns: I. Monoplastidic Meiosis in Angiopteris (Marattiales)
Journal of Plant Research, 2001(Marattiales) undergoes the more primitive form of monoplastidic meiosis, while other ferns have evolved the polyplastidic type typical of seed plants. In monoplastidic cell division, the single plastid divides and serves as site of the microtubule organizing center (MTOC) for spindle formation resulting in coordinated division of plastid, nucleus, and
Brown Roy C, Roy C Brown
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Review of Palaeobotany and Palynology, 1992
Abstract The fern genus Pectinangium (Marattiales) is revised on the basis of newly recognized characteristics, especially the structure, location and arrangement of synangia, and the discovery of in situ spores. Fossil materials for the current study are derived from Jiangxi Province, southern China, from Permian Longtan Formation.
James F Basinger
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Abstract The fern genus Pectinangium (Marattiales) is revised on the basis of newly recognized characteristics, especially the structure, location and arrangement of synangia, and the discovery of in situ spores. Fossil materials for the current study are derived from Jiangxi Province, southern China, from Permian Longtan Formation.
James F Basinger
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Review of Palaeobotany and Palynology, 1999
Abstract The fertile organs and in situ spores of Marattia asiatica (Kawasaki) Harris from the Lower Jurassic Hsiangchi Formation in Zigui, Hubei Province, China, are studied using light microscopy and scanning electron microscopy. The emended diagnosis is given based on studies on the variation of gross morphology and the internal structures of ...
Yongdong Wang
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Abstract The fertile organs and in situ spores of Marattia asiatica (Kawasaki) Harris from the Lower Jurassic Hsiangchi Formation in Zigui, Hubei Province, China, are studied using light microscopy and scanning electron microscopy. The emended diagnosis is given based on studies on the variation of gross morphology and the internal structures of ...
Yongdong Wang
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Annals of the Entomological Society of America, 1996
We document the presence of the piercing-and-sucking functional feeding group and the dietary targeting of vascular tissue (phloem and xylem) in marattialean tree-fern rhachises from a Late Pennsylvanian (302 Ma) coal-swamp forest in the Illinois Basin.
Conrad Labandeira, Tom L Phillips
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We document the presence of the piercing-and-sucking functional feeding group and the dietary targeting of vascular tissue (phloem and xylem) in marattialean tree-fern rhachises from a Late Pennsylvanian (302 Ma) coal-swamp forest in the Illinois Basin.
Conrad Labandeira, Tom L Phillips
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