A Petrified Lycopod from the Uppermost Devonian of Hook Head, County Wexford, Ireland

Matten, Lawrence C.

doi:10.1086/337778

Cited by 18 publications

(21 citation statements)

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“…With the possible exception of stigmarian rhizomorphs, none of the characters traditionally used to delimit the Lepidodendrales (secondary thickening, periderm, ligules, heterospory) is confined to the order. The present analysis shows that the Lepidodendrales as currently delimited may not be monophyletic, and even if monophyletic may not be the most meaningful clade to use as the basis of an ordinal level classification (see also Matten, 1989 Bateman & Rothwell, 1990), having been correlated with several cone-species of the plesiomorphic bisporangiate genus Flemingites (DiMichele, 1930;Pearson, 1986). The type material of A.…”

Section: Appendix 1 Nomenclatural and Taxonomic Notesmentioning

confidence: 80%

“…6), but most (possibly all) have a greater level of universality. For example, a wide range of enigmatic latest Devonian and earliest Mississippian lycopsids possessed wood (Meyer-Berthaud, 1981Scheckler, 1986a, b;Matten, 1989;Roy & Matten, 1989). Rhizomorph-like, rootstocks, ligules, and heterospory aU characterize homophyUous Selaginella, the type genus of theSelagjneUales(e.g., Bierhorst, 1971;Bold et al, 1980).…”

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confidence: 99%

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Experimental Cladistic Analysis of Anatomically Preserved Arborescent Lycopsids from the Carboniferous of Euramerica: An Essay on Paleobotanical Phylogenetics

Bateman¹,

DiMichele²,

Willard³

1992

Annals of the Missouri Botanical Garden

166

133

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Section: Appendix 1 Nomenclatural and Taxonomic Notesmentioning

confidence: 80%

mentioning

confidence: 99%

Experimental Cladistic Analysis of Anatomically Preserved Arborescent Lycopsids from the Carboniferous of Euramerica: An Essay on Paleobotanical Phylogenetics

Bateman¹,

DiMichele²,

Willard³

1992

Annals of the Missouri Botanical Garden

166

133

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“…The oldest woody axes distinct from Callixylon, the wood of archaeopteridalean progymnosperms, were described by Matten and his collaborators from Strunian deposits corresponding to the Retispora lepidophyta, probably LL, miospore zone in Ireland (Matten et al 1976(Matten et al , 1980Matten 1995). Wood from Kerry Head, near Ballyheigue, was first compared with the Mississippian genera Pitus and Eristophyton (Matten et al 1976), then assigned to the 'Pityales' in following papers (Matten et al 1980(Matten et al , 1984.…”

Section: Famennian-mississippian Evolution Of Taxic Diversitymentioning

confidence: 99%

Transitional changes in arborescent lignophytes at the Devonian–Carboniferous boundary

Decombeix

Meyer‐Berthaud

Galtier

2011

JGS

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It is usually considered that after the extinction of the Devonian tree Archaeopteris, no new arborescent lignophytes were established before the late Tournaisian. A reassessment of this pattern is presented here based on a three-fold approach: a re-evaluation of the taxic diversity of Tournaisian lignophyte trees based on descriptions of new plants from palaeotropical latitudes, a study of the patterns of phenotypic changes occurring among early lignophytes using a principal coordinate analysis and a phylogenetic analysis of the affinities of the arborescent taxa. The best supported results indicate that a substantial taxonomic and phenotypic diversity of arborescent lignophytes was already established in the first part of the Tournaisian, including some taxa that persisted until the Serpukhovian. Two genera may have originated in the Late Devonian and crossed the Devonian-Carboniferous boundary. Fewer originations and a decrease in phenotypic diversity occurred in the Viséan. The phenotypic distinctiveness of tree stems compared with those of other growth forms in the lignophytes is assessed. We propose a scenario in which the presence of lignophyte trees is continuous across the Devonian-Carboniferous boundary, with arborescent taxa distinct from Archaeopteris already present in the latest Devonian, possibly in upland floras, and diversifying significantly soon after the Devonian-Carboniferous boundary.

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“…Wexfordia was first described by Matten (1989) and then further investigated by Klavins (2004) from the Upper Devonian of Ireland. It has a solid or medullated stele with a smooth surface, while Hubeiia possesses a solid ridged stele.…”

Section: Comparisons With Other Generamentioning

confidence: 99%

A New Lycopsid from the Upper Devonian of Hubei Province, China

Xue

Shen

Wang

et al. 2005

International Journal of Plant Sciences

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. The University of Chicago Press is collaborating with JSTOR to digitize, preserve and extend access to International Journal of Plant Sciences.A new herbaceous lycopsid, Hubeiia dicrofollia gen. et sp. nov., is described from the Xiejingsi Formation (Late Devonian) of Hubei Province, China. Its stems are isotomously dichotomized. Leaf bases are circular or slightly elliptical in shape and arranged in low helices or alternating pseudowhorls. Persistent leaves are divided into four segments as a result of two successive dichotomies. It has a solid exarch primary xylem strand. Protoxylem tracheids are composed of annular elements that appear as ridges on the stele surface. Metaxylem tracheids are scalariformly thickened and between thickened bars present vertical threads generally termed ''Williamson's striations.'' Primary phloem forms a narrow band, four to eight cells thick, surrounding the stele. The cortex is relatively thick, possibly two zoned. Leaf traces are mesarch; they depart directly from protoxylem points and pass through the cortex with a stable oblique angle. This plant possesses a distinctive combination of characters, i.e., forked leaves in morphology and scalariformly thickened tracheids with Williamson's striations in anatomy, and therefore it is designated as a new stem form genus Hubeiia gen. nov. Taxonomically, it is assigned to Protolepidodendraceae.

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A Petrified Lycopod from the Uppermost Devonian of Hook Head, County Wexford, Ireland

Cited by 18 publications

References 0 publications

Experimental Cladistic Analysis of Anatomically Preserved Arborescent Lycopsids from the Carboniferous of Euramerica: An Essay on Paleobotanical Phylogenetics

Experimental Cladistic Analysis of Anatomically Preserved Arborescent Lycopsids from the Carboniferous of Euramerica: An Essay on Paleobotanical Phylogenetics

Transitional changes in arborescent lignophytes at the Devonian–Carboniferous boundary

A New Lycopsid from the Upper Devonian of Hubei Province, China

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