Lycopodiopsids and equisetopsids from the Triassic of Quebrada de los Fósiles Formation, San Rafael Basin, Argentina

Evidences of Teratology and Mutagenensis in Palynological Assemblages from the Middle Triassic Puesto Viejo Group, San Rafael Depocenter, Argentina. Implications of Volcanism and Regional Environmental Stress

“…The distinctive plant remains and co-occurring palynofloral assemblages of the QdlF Fm, recovered from the type section as well as from the Río Seco de la Quebrada section (Vázquez, 2013, Ottone et al, 2014, Coturel et al, 2016Cariglino et al, 2018;Zavattieri et al, 2020, Gnaedinger et al, 2020Gutiérrez & Zavattieri, 2021). The wetland and peculiar floral assemblages recovered from the type section of the unit consist of lycophytes (Pleuromeia and Lepacyclotes), sphenophytes (Equisetites and Neocalamites) and seed ferns (Ptilozamites) (Cariglino et al, 2018), and remarkably, an equisetalean stem attributed to Neoarthropitis and Nododendron (Gnaedinger et al, 2020).…”

“…Group have been recorded, up to now, only from the QdlF Fm (Ottone & García, 1991;Vázquez, 2013;Ottone et al, 2014;Coturel et al, 2016;Cariglino et al, 2018;Zavattieri et al, 2020, Gnaedinger et al, 2020Gutiérrez & Zavattieri, 2021).…”

“…4). AMZ1 and GzD section levels report Pleuromeiaceae and equisetalean plant remains (Coturel et al, 2016, Cariglino et al, 2018Gnaedinger et al, 2020), thus the high representations of their dispersed microspores evidence local vegetation. Spores of lycophyte and sphenopsids dominate the studied microflora, whereas pteridophyte and bryophyte (smooth and ornamented trilete spores) show low participation (Fig.…”

A new paleofloristic assemblage from the Cuyana Basin (Agua de los Pajaritos depocenter), Argentina and its paleobiogeographic and paleoenvironmental implications

“…Sporophylls assigned to the genus Lepacyclotes (Isoetales) have paleobiogeographical importance, because they have a Laurassic affinity (Kustatscher et al, 2010(Kustatscher et al, , 2015. In Argentina, they have been registered only in the Quebrada de los Fósiles Formation of the Puesto Viejo Group (San Rafael depocenter, Mendoza Province) and are dated as Middle Triassic (Ottone et al, 2014;Coturel et al, 2016;Cariglino et al, 2018). The presence of Lepacyclotes in the Monina Formation extends its record to the Cuyana Basin, increasing the distribution of this taxon.…”

Middle Triassic Continental Palynological Assemblages of San Rafael Depocenter, Central-Western Argentina

“…The fossil plants and palynological assemblages of the Puesto Viejo Group have been recorded, so far, only from the QdlF Fm (Ottone & García, 1991;Zavattieri et al, 2003Zavattieri et al, , 2020Coturel et al, 2012Coturel et al, , 2016Vázquez, 2013;Cariglino et al, 2018;Gnaedinger et al, 2020;Gutiérrez & Zavattieri, 2021;Zavattieri & Gutiérrez, 2022). This contribution complements the knowledge of the palynological content of the QdlF Fm.…”