Pragian–Emsian palynomorphs from the Cordobés Formation, Norte Basin, Uruguay: stratigraphically restricted and regionally correlative palynological events in the cool-water Malvinokaffric Realm

A diverse Early Devonian palynoflora from the Waxweiler Lagerstätte (Klerf Formation, Rhenish Massif, Western Germany): palaeobotanical implications

“…The miospore assemblages are representatives of typical shallow-water habitats (e.g. Cascales-Miñana et al 2016; Daners et al 2017) with autochthonous open marine phytoplankton (acritarchs) being absent in the slides. The assignment to this environment is supported by abundant sedimentological and palaeontological evidence showing e.g.…”

Palynomorphs from the Devonian Talacasto and Punta Negra Formations, Argentinean Precordillera: New biostratigraphic approach

“…As stated above, this Gondwanan species would have a short biostratigraphic distribution corresponding to the late Pragian-early Emsian, with records in Brazil (e.g. Le Hérissé, 2011;Mendlowicz Mauller et al, 2007), Bolivia -as B. bensonii variant A (Pérez-Leyton, 2007;Wood, 1995) (Rubinstein, 2000)-and Uruguay (Daners et al, 2017;Rubinstein et al, in press). Le Hérissé (2011) also pointed out that B. bensonii would be typically recorded in younger ages, from the late Eifelian to the Givetian strata, and that the specimen of B. paulae recognized by Lange (1967) in the Famennian of the Amazonas Basin in Brazil could be considered as reworked.…”

“…According to Rubinstein (2000), the presence of chitinozoans doubtfully assigned as Fungochitina pilosa (Collinson and Scott, 1958) and ?Ancyrochitina langei (Sommer and van Boekel, 1964) would point to a middle-late Givetian age. Moreover, the acritarch identified as Bimerga bensonii Wood was considered as an element confirming the Middle Devonian age (Rubinstein, 2000); yet, a taxonomic revision reassigned it to Bimerga paulae Le Hérissé 2011, restricting its stratigraphic range to the Pragian-Emsian interval (Le Hérissé, 2011;Daners et al, 2017;Rubinstein et al, in press). Thus, a reappraisal of these assemblages suggests an age not younger than Emsian for the bearing levels.…”