Sphenopterid diversity in the Kungurian of Tregiovo (Trento, NE-Italy)

Forte, Giuseppa; Kustatscher, Evelyn; Cittert, Johanna H.A. van Konijnenburg‐van; Kerp, Hans

doi:10.1016/j.revpalbo.2018.02.006

Cited by 11 publications

(5 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several Permian fossil‐species have deeply incised pinnules on bifurcate‐pinnate fronds lacking pinnae below the main frond dichotomy, and often with rachises with a corrugated surface, e.g., Sphenopteris geinitzii Göpp., S. kukukiana Gothan & Nagalhard, S. valentinii G.Forte & Kerp (reviewed by Schweitzer, 1960; Forte & al., 2018). Based purely on morphological criteria, these fossil‐species are clearly compatible with Sphenopteris , and there is little doubt that they were foliage of gymnospermous seed‐plants (see comments by Forte & al., 2018: 66). However, there is no direct evidence (e.g., reproductive structures, rachis anatomy) that they were from lyginopteridalean plants, as would be implied by assigning them to Sphenopteris (at least as defined here).…”

Section: Orphaned Fossil‐speciesmentioning

confidence: 99%

Taxonomy and nomenclature ofSphenopterisand allied fossil‐genera of Carboniferous seed‐plant fronds

Cleal

Thomas

2023

TAXON

View full text Add to dashboard Cite

Most remains of Carboniferous lyginopteridalean seed‐plant fronds used to be classified in a single fossil‐genus (Sphenopteris) based mainly on pinnule morphology. By incorporating additional characters linked to frond architecture and rachial features a more natural taxonomy has now been achieved. Eight fossil‐genera of lyginopteridalean fronds are now recognised (Sphenopteris, Calymmotheca, Eusphenopteris, Karinopteris, Mariopteris, Palmatopteris, Spathulopteris, Sphenopteridium) for which the diagnostic descriptions, nomenclatural types and stratigraphical/chronological distribution are clarified. This provides a more natural and therefore robust means of recording these fossils, which will help improve studies on past plant diversity and floristics. A by‐product of this revision is that some fossil‐species of fern fronds previously placed in Sphenopteris will need to be reclassified into fossil‐genera that are defined on reproductive structures.

show abstract

Section: Orphaned Fossil‐speciesmentioning

confidence: 99%

Taxonomy and nomenclature ofSphenopterisand allied fossil‐genera of Carboniferous seed‐plant fronds

Cleal

Thomas

2023

TAXON

View full text Add to dashboard Cite

show abstract

“…have lasted few million years; the stasis is recorded by the formation of small sedimentary sub-basins with fluvial and lacustrine sediments that preserve plant remains, sporomorphs, conchostracans, bivalves, ostracods, trace fossils and tetrapod remains (e.g. Leonardi 1959;Remy & Remy 1978;Neri et al 2000;Fritz & Krainer 2006;Avanzini et al 2007Avanzini et al , 2008Avanzini et al , 2010Marchetti et al 2015b;Forte et al 2017;2018a, 2018b. The Guncina Formation crops out in the NW area of the Athesian District (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Permian Non-Marine Bivalves From the Collio and Guncina Formations (Southern Alps, Italy): Revised Biostratigraphy and Palaeobiogeography

Silantiev

Marchetti

Ronchi

et al. 2022

RIPS

View full text Add to dashboard Cite

Non-marine bivalves are key fossils in Permian continental stratigraphy and palaeogeography. Although known since the end of 19th century, the occurrences from the continental basins of the Southern Alps have never been extensively studied. The non-marine bivalves from the Lower Permian Collio Formation (Brescian pre-Alps) are herein revised, and those from the Guncina Formation (Athesian District) are described for the first time. These two units yielded non-marine bivalves belonging to the genus Palaeomutela sensu lato, which is widespread in the Permian continental successions of eastern Euramerica. Three Palaeomutela morphotypes have been herein described: oval-subtriangular, subtrapezoidal and elongated. The latter includes several specimens herein assigned to Palaeomutela (Palaeanodonta) berrutii sp. nov. and dominates the Collio Formation association. The Guncina Formation yielded also the genus Redikorella, for the first time co-occurring on the same stratigraphic horizon of Palaeomutela, herein assigned to Palaeomutela (Palaeanodonta) guncinaensis sp. nov. To-date, it was generally accepted that the first members of the genera Palaeomutela and Redikorella occurred during the Ufimian (late Kungurian of the global scale) in the non-marine basins of the Cis-Ural Foredeep and of Angara, respectively. Such new finds in the early-middle Kungurian of southwestern Europe, well constrained by radioisotopic dating, suggest new global first appearance (First Appearance Datum) and a possible new center of origin of these genera. This fact raises new questions on biostratigraphy, palaeobiogeography and palaeoecology, which will require further research. If we assume that the genera Palaeomutela and Redikorella had only one center of origin, we need to hypothesise possible migration routes from SW Europe to the continental basins of Eastern Europe and Angara. Apparently, such migration could be better supported by a Pangaea B palaeogeographic configuration.

show abstract

“…Intercalated in the volcanic units, sedimentary rocks were deposited during periods of volcanic quiescence. Some of these epiclastic units (i.e., in the Tregiovo Basin) are age-constrained by radiometric dating in the under-and overlying volcanic unit and are well-known for their abundant plant macro-and microfossils as well as vertebrate and invertebrate remains and vertebrate traces (e.g., Cassinis & Doubinger 1991Cassinis & Neri 1992; Barth & Mohr 1994;Neri et al 1999;Visscher et al 2001;Avanzini et al 2011;Forte et al 2017;Marchetti et al 2017;Forte et al 2018a). However, only few studies integrate the different terrestrial ecosystem components to reconstruct palaeoenvironments and climate changes (Marchetti et al 2015(Marchetti et al , 2022Forte et al 2018b).…”

Section: Introductionmentioning

confidence: 99%

Reconstructing Kungurian (Cisuralian, Permian) Terrestrial Environments Within a Megacaldera in the Southern Alps (N-Italy) Using Lithofacies Analysis, Palynology and Stable Carbon Isotopes

Vallé¹,

Nowak²,

Kustatscher³

et al. 2023

RIPS

View full text Add to dashboard Cite

During the Permian, climate experienced a change from icehouse to greenhouse conditions. Few multidisciplinary studies have investigated Kungurian (late Cisuralian) tropical terrestrial ecosystem and climate changes. Here, we apply an interdisciplinary approach to two alluvial-lacustrine successions of the Athesian Volcanic Group (Southern Alps, northern Italy) deposited in a Kungurian megacaldera during periods of volcanic quiescence. Sedimentological analysis combined with palynofacies studies allowed the reconstruction of the depositional environments. The study of sporomorph assemblages and stable organic carbon isotopes provided information on plant communities and the climate context. Two different depositional environments were present in the megacaldera: one proximal and one more distal with respect to the source, distinguished by a slightly different composition of the sediments, palynofacies and organic carbon isotopes. The plant community in the area was dominated by xeromorphic-hygromorphic taxa. The δ13Corgvalues are comparable to those of other Cisuralian continental organic matter and plants. The stable carbon isotope values show a small variability, which correlates weakly, but significantly, with the abundance of xeromorphic elements. All observations support deposition during semiarid to arid climate conditions, typical of the mid-late Cisuralian in the area.

show abstract

Sphenopterid diversity in the Kungurian of Tregiovo (Trento, NE-Italy)

Cited by 11 publications

References 17 publications

Taxonomy and nomenclature ofSphenopterisand allied fossil‐genera of Carboniferous seed‐plant fronds

Taxonomy and nomenclature ofSphenopterisand allied fossil‐genera of Carboniferous seed‐plant fronds

Permian Non-Marine Bivalves From the Collio and Guncina Formations (Southern Alps, Italy): Revised Biostratigraphy and Palaeobiogeography

Reconstructing Kungurian (Cisuralian, Permian) Terrestrial Environments Within a Megacaldera in the Southern Alps (N-Italy) Using Lithofacies Analysis, Palynology and Stable Carbon Isotopes

Contact Info

Product

Resources

About