Middle Devonian herbaceous lycopsid Haplostigma from the Paraná Basin, Brazil: Taxonomy, biostratigraphy and Phytogeography

Matsumura, Willian Mikio Kurita; Iannuzzi, Roberto; Bosetti, Elvio Pinto

doi:10.1016/j.geobios.2015.07.001

Cited by 21 publications

(7 citation statements)

References 60 publications

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“…Devonian strata occur in both sub‐basins and constitute the Paraná Supersequence (Pridoli to Frasnian) that was deposited under marine conditions and a cool temperate climate between 60° and 80° S palaeolatitude (Cooper ; Scotese & McKerrow ; Matsumura et al . ; Fig. B).…”

Section: Geological Settingmentioning

confidence: 82%

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An integrative ichnological and taphonomic approach in a transgressive–regressive cycle: a case study from Devonian of Paraná Basin, Brazil

Sedorko

Bosetti

Netto

2018

LET

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Netto, R.G. 2018: An integrative ichnological and taphonomic approach in a transgressive-regressive cycle: a case study from Devonian of Paran a Basin, Brazil. Lethaia, Vol. 51, pp. 15-34.The palaeoenvironmental context of a section of the Devonian Ponta Grossa Formation (Paran a Basin) was examined using an integrated ichnological and taphonomic approach. Three taphofacies (T-A, T-B and T-C) and six ichnofabrics are recognized. T-A is mainly composed of disarticulated organisms and is associated with Chondrites, Planolites-Palaeophycus, Asterosoma-Zoophycos and Asterosoma-Chondrites ichnofabrics, representing the Cruziana ichnofacies. The upward increase in diversity and abundance of body fossils for Taphofacies A can be explained by changes in sedimentation rates during aggradational to progradational phases. T-B beds, represented by articulated brachiopods, occur in distal tempestites associated with the Skolithos ichnofabric (Skolithos ichnofacies) and represent higher hydrodynamic energy and oxygenation than in T-A. Taphofacies C, characterized by a mix of articulated and disarticulated organisms, generally lacks bioturbation except for Chondrites ichnofabrics occurring only at the bed tops, suggesting low substrate oxygenation and low-energy conditions. T-C indicates the maximum transgression in the T-R cycle, characterizing it as a good indicator of maximum flooding surfaces. The composite Asterosoma-Teichichnus ichnofabric (bioturbation degree 5) occurs in layers without body fossils and represents suites of the Cruziana ichnofacies. This likely reflects intense intrastratal activity at all substrate levels, which facilitated the oxygenation of the substrate disallowing the preservation of organism remains. This observation indicates that the bioturbation is an important factor controlling the loss of taphonomic information within the TAZ, mainly when associated with detritus-feeding trace fossils. □ Devonian shales, Gondwana, ichnofacies, marine siliciclastic deposits, palaeoenvironmental analysis, taphofacies.Daniel Sedorko ✉ [sedorko@edu.unisinos.br], and Renata G. Netto [nettorg@unisi-nos.br], Geology

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Section: Geological Settingmentioning

confidence: 82%

“…B, inferred position of the study area on Gondwana during the Emsian (from Matsumura et al . ). C, stratigraphical position of Devonian units on east side of the Paraná Basin (modified from Bosetti et al .…”

Section: Geological Settingmentioning

confidence: 97%

An integrative ichnological and taphonomic approach in a transgressive–regressive cycle: a case study from Devonian of Paraná Basin, Brazil

Sedorko

Bosetti

Netto

2018

LET

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“…2014) and plant remains that are the subject of this study (Matsumura et al . , ). The age of this unit is assigned to the late Emsian – early Givetian based on palynomorphs, and the environments are interpreted as shallow marine influenced by storms (Grahn et al .…”

Section: Geological Settingmentioning

confidence: 97%

Fourier transform infrared characterization of the Middle Devonian non‐vascular plant Spongiophyton

2016

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Spectroscopy information (functional groups and semiquantitative data) by Fourier transform infrared (FTIR) spectroscopy of Spongiophyton Kr€ ausel emend. Chaloner et al. is reported for the first time, in an attempt to identify spectroscopic patterns that would differentiate species of these taxa. A total of 33 specimens identified as S. lenticularis, S. nanum and S. minutissimum and preserved as compressions were analysed. They come from the same fossiliferous horizon of one outcrop situated in the uppermost Middle Devonian São Domingos Formation of the Paran a Basin in southern Brazil. The results reveal that functional groups in the 3000-2800 and 1800-700 cm À1wavenumber regions are present in all specimens. Infraredderived ratios (CH 2 /CH 3 , Al/Ox, Ox1/Ox2, C=O cont., C=C cont., Al2 and Ar/Al) and types of kerogen led to a comparison of the morphological characteristics of the studied material and indicate that compressions of S. lenticularis, S. nanum and S. minutissimum contain different organic compounds. S. nanum and S. minutissimum show higher oxidation and lower aromaticity of its organic matter than S. lenticularis. Additionally, S. lenticularis shows low A-factor values, suggesting a composition similar to type III kerogen, while S. nanum and S. minutissimum showed intermediate to high A-factor values, suggesting a composition similar to type II kerogen. In conclusion, the chemical-analytical techniques and statistical analysis (using PCA technique) reveal a closer taxonomic relationship between S. nanum and S. minutissimum than either has with S. lenticularis, supporting their taxonomic separation, previously proposed in the literature on the basis of morphological features. Lastly, the chemical signatures support the hypothesis that links these enigmatic fossils to a type of lichen or other early inland plant.

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“…The Ponta Grossa Formation is very fossiliferous and a Devonian age has been assigned based on macrofossils (brachiopods, trilobites and plants) and palynomorphs (Grahn, 1992and Grahn et al, 2010, 2013. Paleoenvironments include inner to outer shelf marine settings (Clarke, 1913;Lange and Petri, 1967;Melo, 1988;Grahn, 1992;Rodrigues et al, 2003;Bosetti et al, 2011Bosetti et al, , 2013Grahn et al, 2013;Horodyski et al, 2014;Matsumura et al, 2015;Sedorko et al, 2017). The Tibagi Member records a progradational event between the Emsian and Eifelian maximum-flooding surfaces (Assine et al, 1998c).…”

Section: Lower Paleozoic Stratigraphymentioning

confidence: 99%

Chronostratigraphy and environment of Furnas Formation by trace fossil analysis: Calibrating the lower Paleozoic Gondwana realm in the Paraná Basin (Brazil)

Sedorko

Netto

Savrda

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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Ichnology is an important tool for facies and sequence stratigraphic analysis, typically yielding greater resolution than that provided by body fossils. Less commonly, ichnofossils also can be applied to ichnostratigraphy, a variant of biostratigraphy that aids in determining stratigraphic age of sedimentary sequences. Previous publications on the Furnas Formation (Paraná Group, early Paleozoic of the Paraná Basin), have yielded different interpretations of age, depositional environment, and sequence stratigraphic framework. Deposition in fluvial environments has been proposed in many papers, although a tide-influenced marine context has been inferred since the presence of Cruziana and Rusophycus was reported during the 1990s. Sequence stratigraphic interpretations also differ, mainly regarding the presence or absence of a sequence boundary between the middle and upper units of the Furnas Formation. The absence of body fossils in all but the topmost part of the upper unit, which contains Lochkovian (Lower Devonian) palynomorphs and primitive plants, has precluded age determination for the Furnas Formation in general. Here, we demonstrate the utility of both ichnofacies and ichnostratigraphic analysis to elucidate such questions. The studied sections are located in the cities of Tibagi, Palmeira and Ponta Grossa (Guartelá, Sítio Canei and São Jorge sections, respectively). Seventeen ichnotaxa are recognized, doubling the number of previously known ichnotaxa: Cruziana acacensis elongata and Rusophycus acacensis n. ichnosp. (in the lower and middle units); Arthrophycus alleghaniensis, A. brongniartii, Rhizocorallium commune, Didymaulyponomos rowei and Heimdallia chatwini (middle unit only); Arenicolites, Cylindrichnus and Diplocraterion (lower and upper units); Lockeia siliquaria and Psammichnites implexus (middle and upper units); Rosselia socialis (upper unit); and Palaeophycus tubularis, Didymaulichnus lyelli, Skolithos, and Thalassinoides (all units). Assemblages of these ichnofossils are assigned to Skolithos and proximal Cruziana ichnofacies. Ichnologic data, combined with associated physical sedimentary facies associations, indicate predominantly tide-influenced marine depositional environments. The presence of ichnotaxa of stratigraphic value (Arthrophycus alleghaniensis, A. brongniartii and Cruziana acacensis elongata) in lower and middle units indicates an Early Silurian age. This, in turn, indicates that a significant unconformity exists between the middle and upper units of Furnas Formation. Although the precise magnitude of this stratigraphic gap is difficult to establish, this break likely is linked to the Late Silurian global regression.

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Middle Devonian herbaceous lycopsid Haplostigma from the Paraná Basin, Brazil: Taxonomy, biostratigraphy and Phytogeography

Cited by 21 publications

References 60 publications

An integrative ichnological and taphonomic approach in a transgressive–regressive cycle: a case study from Devonian of Paraná Basin, Brazil

An integrative ichnological and taphonomic approach in a transgressive–regressive cycle: a case study from Devonian of Paraná Basin, Brazil

Fourier transform infrared characterization of the Middle Devonian non‐vascular plant Spongiophyton

Chronostratigraphy and environment of Furnas Formation by trace fossil analysis: Calibrating the lower Paleozoic Gondwana realm in the Paraná Basin (Brazil)

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