Heterosporous, barinophytacean plants from the upper devonian of North America and a discussion of the possible affinities of the barinophytaceae

Brauer, David F.

doi:10.1016/0034-6667(81)90092-0

Cited by 22 publications

(8 citation statements)

References 3 publications

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“…The oval sporangia and the spine‐like bracts are separately borne along the axis in two rows. However its centrarch protoxylem differs distinctly from the exarch protoxylem of the barinophytes (Edwards, 1968; Brauer, 1981; Kenrick & Edwards, 1988; Kenrick & Crane, 1997a). Based on Schweitzer’s summary (1990), plus E .…”

Section: Discussionmentioning

confidence: 99%

A new species of Estinnophyton from the Lower Devonian Posongchong Formation, Yunnan, China; its phylogenetic and palaeophytogeographical significance

Shen

Wang

2004

Botanical Journal of the Linnean Society

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A new species of early vascular land plant, Estinnophyton yunnanense, is described from the Lower Devonian (upper Pragian) Posongchong Formation at Zhichang village, Gumu Town, Wenshan District, Yunnan Province, China. This plant possesses aerial stems with isotomous branching. The leaves are slender, once-or twice-bifurcated, and arranged in low spirals or pseudowhorls. Fertile leaves are morphologically identical to the vegetative ones, clustered on the axis, forming a loose strobilus-like structure. There are three to six fertile leaves in each gyre. Two ovoidelongate sporangia are singly attached to the adaxial surface each subtended by a recurved stalk, either at the base of each segment in a once-bifurcate fertile leaf or below the points of successive divisions in a twice-bifurcate fertile leaf. Estinnophyton yunnanense differs from two other species described previously from Europe, E. gracile and E. wahnbachense, mainly in possessing two single stalked sporangia on each fertile leaf rather than two pairs of sporangia, as well as in the dimensions of its leaves. In view of the complex taxonomy and nomenclature surrounding the type material of Estinnophyton, we considered possible emendation of the generic diagnosis based on the new Chinese material. Following comparison with typical members of the Protolepidodendrales and other taxa, Estinnophyton is considered to have had a closer affinity with primitive sphenopsids than the protolepidodendralean lycopsids. A comparison between Chinese and European floras containing Estinnophyton indicates that South China and Western Europe had floristic elements in common although they were in different phytogeographical units during the Early Devonian epoch.

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Section: Discussionmentioning

confidence: 99%

A new species of Estinnophyton from the Lower Devonian Posongchong Formation, Yunnan, China; its phylogenetic and palaeophytogeographical significance

Shen

Wang

2004

Botanical Journal of the Linnean Society

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“…Some dichotomous appendages are alternately borne at the basal areas of the fertile axes. Dibracophyton resembles Barinophyton and Protobarinophyton [46][47][48]. Their sporangia have two valves and distal dehiscence (sporangial characters were demonstrated in B. norvegicum and Dibracophyton), and possible unvascularized bracts.…”

Section: Beyond Megaphylls Plants With Unusual Leafy Structuresmentioning

confidence: 99%

Earliest record of megaphylls and leafy structures, and their initial diversification

Shen

Xue

2013

Chin. Sci. Bull.

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Evolutionary changes in the structure of leaves have had far-reaching effects on the anatomy and physiology of vascular plants, resulting in morphological diversity and species expansion. People have long been interested in the question of the nature of the morphology of early leaves and how they were attained. At least five lineages of euphyllophytes can be recognized among the Early Devonian fossil plants (Pragian age, ca. 410 Ma ago) of South China. Their different leaf precursors or "branch-leaf complexes" are believed to foreshadow true megaphylls with different venation patterns and configurations, indicating that multiple origins of megaphylls had occurred by the Early Devonian, much earlier than has previously been recognized. In addition to megaphylls in euphyllophytes, the laminate leaf-like appendages (sporophylls or bracts) occurred independently in several distantly related Early Devonian plant lineages, probably as a response to ecological factors such as high atmospheric CO 2 concentrations. This is a typical example of convergent evolution in early plants.Early Devonian, euphyllophyte, megaphyll, leaf-like appendage, branch-leaf complex Citation:Hao S G, Xue J Z. Earliest record of megaphylls and leafy structures, and their initial diversification.

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“…Hartung reconocía que el material era bastante deficiente y no podía llegar a concretar la especie. Muchas atribuciones a taeniocrada White, 1903, resultan dudosas porque han sido asignados a este género caules sin estructuras anatómicas determinativas salvo una única estría longitudinal en el caule, acabando convertido el género en un auténtico "caj�n de sastre" (Brauer, 1981;Gensel & Andrews, 1984: 340).…”

Section: Zona Cantábrica: Palencia (España)unclassified

Registros atribuidos a plantas vasculares devónicas en la Península Ibérica

Montero¹

2021

Spanish J. Palaeontol.

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Se revisan y valoran los descubrimientos publicados de flora vascular devónica encontrados en España y Portugal desde el siglo XIX, la primera cita conocida se debe a Hermite (1879), hasta la actualidad. También se analizan el origen y trayectoria de los ejemplares ibéricos de flora devónica que existen actualmente en instituciones españolas y portuguesas, así como su interés paleobotánico. Por último, se resume en dos tablas las publicaciones sobre flora devónica ibérica y los ejemplares de plantas vasculares devónicas depositados en museos españoles, y se figuran todos aquellos que permanecen en las colecciones de museos españoles.

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Heterosporous, barinophytacean plants from the upper devonian of North America and a discussion of the possible affinities of the barinophytaceae

Cited by 22 publications

References 3 publications

A new species of Estinnophyton from the Lower Devonian Posongchong Formation, Yunnan, China; its phylogenetic and palaeophytogeographical significance

A new species of Estinnophyton from the Lower Devonian Posongchong Formation, Yunnan, China; its phylogenetic and palaeophytogeographical significance

Earliest record of megaphylls and leafy structures, and their initial diversification

Registros atribuidos a plantas vasculares devónicas en la Península Ibérica

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