Lycopodiopsis derbyi Renault from the Corumbataí Formation in the state of São Paulo (Guadalupian of Paraná Basin, Southern Brazil): New data from compressed silicified stems

Faria, Rafael Souza de; Ricardi-Branco, Frésia; Giannini, Paulo César Fonseca; Sawakuchi, André Oliveira; Del-Bem, Luiz-Eduardo

doi:10.1016/j.revpalbo.2009.08.005

Cited by 20 publications

(12 citation statements)

References 9 publications

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“…Probably these specimens correspond to the ones described by Frenguelli (1946) as Lepidodendron australe Mc Coy, but their preservation hampers to confirm this assignment. According to the observed characteristics in other Gondwanan lycophytes, outline and size of the leaf cushions vary on axes of different orders in the same species (Souza de Faria et al, 2009).…”

Section: Striate Pollen Grainsmentioning

confidence: 97%

Afloramientos carboníferos en la quebrada La Herradura, Provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones.

Loinaze

Limarino

Césari³

2014

Andgeo

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ABSTRACT. At the outcrops of the Tupe Formation in the La Herradura Creek, San Juan Province, two transgressive events are recorded, which range from few meters to tens of meters in thickness. These strata correspond to the stratotype of the faunal Tivertonia jachalensis-Streptorhynchus inaequiornatus Biozone. An evaluation of the timing of the two marine transgressions is made on the basis of palynological assemblages and available radiometric ages. A short-lived transgression is recorded in the latest Bashkirian-early Moscovian, and then a substantial sea level fall took place forming an irregular incision surface. Later, a major high eustatic sea-level occurred during the middle Moscovian resulting in a more important marine ingression. The palynological assemblages associated to the older transgressive event indicate the presence of the Raistrickia densa-Convolutispora muriornata (DM) Biozone (Subzone B). Palynofloras referred to the Subzone C of the DM Biozone characterize the strata of the younger transgression that also bear marine fauna of the Tivertonia jachalensis-Streptorhynchus inaequiornatus Biozone. Correlations with other Pennsylvanian outcrops in the region give support to the stratigraphic scheme here proposed. Keywords: Pennsylvanian, Argentina, Transgressions, Palynology. RESUMEN. Afloramientos carboníferos en la quebrada La Herradura, provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones. En los afloramientos de la Formación Tupe en la quebrada de La Herradura, provincia de San Juan, se registran dos eventos transgresivos, cuya magnitud varía desde unos pocos metros a decenas de metros de espesor. Estos estratos corresponden al estratotipo de la biozona faunística Tivertonia jachalensis-Streptorhynchus inaequiornatus. En esta contribución se presenta una evaluación y ajuste de la edad de las dos transgresiones marinas, sobre la base de las asociaciones palinológicas y las dataciones radiométricas disponibles. Una transgresión de corta duración se registró en el Bashkiriano tardío-Moscoviano temprano, a la que siguió una sustancial caída del nivel del mar, y originó una superficie de incisión irregular. Posteriormente, significativas condiciones de mar alto se produjeron durante el Moscoviano medio, lo que resultó en una más importante ingresión marina. Las asociaciones palinológicas relacionadas con el evento más antiguo pueden ser asignadas a la Subzona B de la Biozona Raistrickia densa-Convolutispora muriornata (DM). Palinofloras referidas a la Subzona C de la Biozona DM caracterizan los estratos de la transgresión más joven, donde también se reconoce la fauna marina de la Biozona Tivertonia jachalensisStreptorhynchus inaequiornatus. Las correlaciones con otros afloramientos pennsylvanianos en la región dan soporte al esquema estratigráfico aquí propuesto.

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Section: Striate Pollen Grainsmentioning

confidence: 97%

Afloramientos carboníferos en la quebrada La Herradura, Provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones.

Loinaze

Limarino

Césari³

2014

Andgeo

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“…Cristiano-de-Souza et al (2012) proposed two bryophyte genera and species: Capimirinus riopretensis and Yguajemanus yucapirus, which are associated with abundant charophyte oogonia of the genus Leonardosia (Porocharaceae Family) described by Faria et al (2013). Dispersed lycophyte stems identified as Lycopodiopsis derbyi and structures that are probably related to strobilus bracts were also found in the siltite (Faria et al, 2009). This bed is overlain by meter-thick coarsening-and-thickening upward successions of bioturbated heterolithic shales/very fine sandstones with wavy bedding.…”

Section: Characterization Of the Bryophyte Bedsmentioning

confidence: 99%

Rare Carboniferous and Permian glacial and non-glacial bryophytes and associated lycophyte megaspores of the Paraná Basin, Brazil: A new occurrence and paleoenvironmental considerations

Ricardi-Branco

Rohn

Longhim

et al. 2016

Journal of South American Earth Sciences

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Fossil bryophytes are rare because their preservation is compromised by the presence of a thin cuticle (if any) and a lack of lignin. Except for the occurrence of one bryophyte in the glacial Dwyka Group of the Karoo Basin, the other rare Late Paleozoic records in Gondwana are notably from the Paran a Basin in Southeast/South Brazil. Four bryophyte sites (including a newly discovered one) were found in the lower part of the thick Permo-Carboniferous glacial succession of the Itarar e Group, and one was found in the Guadalupian Teresina Formation, which was roughly assigned to an epeiric sea (or "lake") dominated by a warm, semi-arid climate. This study describes the fossils from the new occurrence from the Itarar e Group and discusses the context in which the bryophyte beds originated in the basin. The new samples confirm that all of the bryophytes of the Itarar e Group can be classified as Dwykea araroii Ricardi-Branco et al. (a possible pleurocarp) and are associated with the lycophyte megaspore Sublagenicula brasiliensis (Dijkstra) Dybov a-Jachowicz. In the much younger Teresina Formation, the bryophytes are Yguajemanus yucapirus Cristiano-de-Souza et al. and Capimirinus riopretensis Cristiano-de-Souza et al., and abundant charophytes and rare dwarf lycophyte stems and bracts are present in the same layers. Although the two stratigraphic units represent distinct paleoenvironments and climates, they seem to share some characteristics: a) the bryophyte assemblages were transported very little; b) they were deposited in very calm environments; c) they were the main components (along with some lycophytes) of local or poorly diversified regional vegetation. The low number of species, which is characteristic of opportunistic communities, can be explained by local or regional conditions that would have been stressful for the vascular plants in other areas. During the deposition of the Itarar e Group, the main control was probably the cold climate in addition to a relative (liquid) water deficit because the bryophyte vegetation may have belonged to a tundra biome in areas of retreating glaciers. For the Teresina Formation, it is possible that the control was scarce freshwater, an unstable environment and water-saturated soil in a scenario of bryophyte vegetation living around temporary ponds in a wide marginal area of the epeiric sea.

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“…Identified features in the study region such as collapse breccias, evaporite minerals and their pseudomorphs, silicified or calcitizied nodules interpreted as replacement of evaporites, presence of quartzine, authigenic idiomorphic quartz crystals, as well as the low diversity but abundant skeletal grains are suggestive of saline and hypersaline depositional conditions (Flüge|,2004). Also, stromatolites with flat morphology, presence of Lycopodiopsis fragments with low sedimentary transport (De Faria et al, 2009) and desiccation cracks are others evidences suggestive of shallow and restrict depositional environment. The heterolithic silty-sandy facies and fragmented stems and leafs of Lycopodiopsrs were probably deposited by storm events, as De Faria et al (2009) suggested for silicified stems of Lycopodiopsis derbyi from the Teresina and Corumbataí formations in the reigion nothward the PGA.…”

Section: Controls On Carbonate and Evaporite Sedimentation In The Termentioning

confidence: 99%

“…The heterolithic silty-sandy facies and fragmented stems and leafs of Lycopodiopsrs were probably deposited by storm events, as De Faria et al (2009) suggested for silicified stems of Lycopodiopsis derbyi from the Teresina and Corumbataí formations in the reigion nothward the PGA. This vegetal fossil is an indicator ofarid conditions (De Faria et a|.,2009).…”

Section: Controls On Carbonate and Evaporite Sedimentation In The Termentioning

confidence: 99%

“…suggests an age near the Cisuralian -Guadalupian limit (Middle Permian) for the Teresina Formation. Some plant fossils identified are Lycopodiopsls, which have been assignated an age of Cisuralian and Guadalupian for the Teresina and Corumbataí formations (De Faria et al, 2009). Holz et al (2010) indicated an older age of Late Kungurian -Rodian (Early to Middle Permian).…”

Section: the Teresina Formationmentioning

confidence: 99%

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Fáceis Carbonáticas da formação Teresina na borba centro-leste da Bacia do Paraná

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Lycopodiopsis derbyi Renault from the Corumbataí Formation in the state of São Paulo (Guadalupian of Paraná Basin, Southern Brazil): New data from compressed silicified stems

Cited by 20 publications

References 9 publications

Afloramientos carboníferos en la quebrada La Herradura, Provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones.

Afloramientos carboníferos en la quebrada La Herradura, Provincia de San Juan (oeste de Argentina), revisados: edad de las transgresiones.

Rare Carboniferous and Permian glacial and non-glacial bryophytes and associated lycophyte megaspores of the Paraná Basin, Brazil: A new occurrence and paleoenvironmental considerations

Fáceis Carbonáticas da formação Teresina na borba centro-leste da Bacia do Paraná

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