On the anatomy of wood showing affinities with the genus vertebraria royle, from the irati formation, state of São Paulo, Brazil

Mussa, Diana

doi:10.11606/issn.2316-8978.v9i0p153-179

Cited by 13 publications

(13 citation statements)

References 1 publication

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“…The main character distinguishing Australoxylon from typical Araucarioxylon is the presence of mixed-type pitting on the tracheid radials, whereas Araucarioxylon has only araucarian radial pitting (contiguous when uniseriate, crowded and alternate when multiseriate). Vertebraria axes in the Permian of Brazil, Skaar Ridge in Antarctica, and Prince Charles Mountains in Antarctica have an Australoxylon wood type (Mussa 1978;Neish et al 1993;Decombeix et al 2009). Glossopteris skaarensis, one of three known taxa that has anatomical attachment of Glossopteris leaves to wood (Pigg & Taylor 1993), has wood with uni-to biseriate pits that are crowded to widely spaced and can be compared with Australoxylon.…”

Section: Wood Affinitiesmentioning

confidence: 99%

Leaf habit of Late PermianGlossopteristrees from high-palaeolatitude forests

Gulbranson

Ryberg

Decombeix

et al. 2014

JGS

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Abstract:The leaf longevity of trees, deciduous or evergreen, plays an important role in climate feedbacks and plant ecology. in modern forests of the high latitudes, evergreen trees dominate; however, the fossil record indicates that deciduous vegetation dominated during some previous warm intervals. We show, through an integration of palaeobotanical techniques and isotope geochemistry of trees in one of the earliest polar forests (Late Permian, c. 260 Ma, Antarctica), that the arborescent glossopterid taxa were both deciduous and evergreen, with a greater abundance of evergreen trees occurring in the studied forests. These new findings suggest the possibility that deciduousness was a plastic trait in ancient polar plants, and that deciduous plants, migrating poleward from lower latitudes, were probably better adapted to high-disturbance areas in environments that were light-limited.

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Section: Wood Affinitiesmentioning

confidence: 99%

Leaf habit of Late PermianGlossopteristrees from high-palaeolatitude forests

Gulbranson

Ryberg

Decombeix

et al. 2014

JGS

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“…It is considered significant tbat an identical type of radial pitting is present in tbe Vertebraria roots collected at tbe same locality (Decombeix et al 2009; fig. 3D, 3£) and bas been reported in several Permian Gondwanan axes attributed to or found in association with glossopterids (Marguerier 1973;Mussa 1978;Prasad and Chandra 1978;Weaver et al 1997;Bamford 1999). These axes have generally been assigned to the morphogenus Australoxylon Marguerier 1973, characterized by a mixed araucarioid/abietoid radial pitting.…”

Section: Affinities Of the Trunksmentioning

confidence: 75%

“…These axes have generally been assigned to the morphogenus Australoxylon Marguerier 1973, characterized by a mixed araucarioid/abietoid radial pitting. Wbile a discussion on tbe wood anatomy of glossopterids is beyond tbe scope of tbis article, tbe possibility tbat tbis distinctive radial pitting pattern migbt be a cbaracteristic of tbe group, as suggested by Mussa (1978), is notewortby.…”

Section: Affinities Of the Trunksmentioning

confidence: 99%

Epicormic Shoots in a Permian Gymnosperm from Antarctica

Decombeix

Taylor

2010

International Journal of Plant Sciences

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Two anatomically preserved gymnosperm trunks with clusters of epicormic sboots are described from tbe Late Permian of Antarctica. Tbe best-preserved trunk is 14 cm long. It has a small circular parencbymatous pith and 9 cm of secondary xylem tbat contains at least 50 growth rings. Tbe second specimen is sligbtly smaller (11x8 cm) and bas 20 growtb rings. Botb specimens bave pycnoxylic wood and produced more tban 50 small sboots in a delimited zone on tbe surface of the trunk. Sboots bave a wide parencbymatous pitb tbat may be solid to septate witb endarcb primary xylem forming 8-10 sympodia and a small amount of secondary xylem similar to tbat of tbe parent trunk. Tbe sboots brancb and increase in number toward tbe outside of tbe trunk. Evidence based on anatomical comparisons and association at tbe site indicates tbat tbe specimens probably represent trunks of some glossopterid, tbe dominant group of seed ferns during the Permian in Gondwana. Tbis is tbe first report of clusters of epicormic sboots in a Paleozoic gymnosperm. Tbe ability to produce a large number of young sboots tbat were capable of developing into new branches indicates tbat tbese high-latitude trees possessed an arcbitectural plasticity tbat allowed tbem to respond quickly to sbort-or longterm environmental stress.

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Section: Introductionunclassified

“…O gênero Myelontordoxylon Mussa, 1978integra, juntamente com Schopfiicaulia Mussa, 1982(vide Mussa 1982b, Tordoxylon Kräusel emend. Mussa, 1978e Vertebraria Royle, 1839(vide Royle 1939-1940, um complexo de formas permianas que exibem traços anatômicos peculiares. Dentre estes, destacam-se o cilindro lenhoso, comumente de contorno assimétrico em seção transversal, a medula, em geral incipiente ou ausente, o xilema secundário, disposto em setores radiais e com pontoações radiais frequentemente reunidas em grupos estelares, e a presença singular de níveis nodais, de onde se originam raízes adventícias.…”

Section: Introductionunclassified

Reavaliação taxonômica de lenhos das formações Irati e Serra Alta, Permiano da Bacia do Paraná , Brasil

Merlotti

2009

Pesq Geoc

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Com base na bibliografia e na revisão taxonômica de lenhos fósseis do Eopermiano da Bacia do Paraná, Brasil, três novas combinações, Myelontordoxy lon camposii (Mussa), Abietopitys articulata (Dohms) e Paulistoxylon iratiensis (Guerra-Sommer), são propostas e uma espécie, Polysolenoxylon bortoluzzii Guerra, é considerada inválida. Excetuando-se M. camposii, originária da Formação Irati no Estado de São Paulo, todas as demais são provenientes da Formação Serra Alta no Estado do Rio Grande do Sul. Com base nas novas combinações, apresentam-se emendas à diagnose genérica de Myelontordoxylon Mussa e à diagnose específica de A. articulata (Dohms).

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On the anatomy of wood showing affinities with the genus vertebraria royle, from the irati formation, state of São Paulo, Brazil

Cited by 13 publications

References 1 publication

Leaf habit of Late PermianGlossopteristrees from high-palaeolatitude forests

Leaf habit of Late PermianGlossopteristrees from high-palaeolatitude forests

Epicormic Shoots in a Permian Gymnosperm from Antarctica

Reavaliação taxonômica de lenhos das formações Irati e Serra Alta, Permiano da Bacia do Paraná , Brasil

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