From the Transantarctic Basin to the Ferrar Large Igneous Province—New palynostratigraphic age constraints for Triassic–Jurassic sedimentation and magmatism in East Antarctica

Palynostratigraphy of the Nayband Formation, Tabas, Central Iran Basin: Paleogeographical and paleoecological implications

“…and paucity of Densoisporites psilatus and Classopollis meyerianus. The oldest instituted biozone herein, australis-folliculosa is distinct from the Australasian Norian APT5L subzone and Polycingulatisporites crenulatus Association Subzone(Bomfleur et al, 2014) with no shared taxa.However, C. sp.-R. tuberculatus and tuberculatus-polymicroforatus biozones combined are comparable with the Rhaetian APT5M and Foveosporites moretonensis Association Subzone(Bomfleur et al, 2014) in sharingPerinopollenites elatoides and Polycingulatisporites mooniensis.…”

“…The palynofloras examined are essentially distinct from the Australian Polycingulatisporites crenulatus Zone of Rhaetian-middle Sinemurian(de Jersey, 1975) and of middle Norian-Rhaetian age(de Jersey & McKellar, 2013) as well as the NorianHettangian P. crenulatus "Oppel" Zone(Helby et al, 1987) in lack of the eponymous index species. The same distinction applies when comparing the 12 Nayband palynofloras with the P. crenulatus Association Zone ofBomfleur et al (2014). Of a zonation scheme developed for Upper Triassic-Lower Jurassic of the Clarence-Moreton Basin, southeastern Queensland, Australia(de Jersey 1976;McKellar, 1981;de Jersey & McKellar, 2013), Assemblage A (partially Rhaetian) seems to be comparable with the Nayband assemblages in terms of abundance of Alisporites spp.…”

“…australis-A. folliculosa biozone is tentatively attributed to Norian as cingulate spores with distal polar thickenings (Rogalskaisporites) occur therein; a trait also known in coeval assemblages from eastern Australia, New Zealand, and eastcentral Iran (Helby et al, 1987;de Jersey & Raine, 1990;Cirilli et al, 2005 (Cirilli et al, 2005;Cirilli, 2010, and literature cited therein; Bomfleur et al, 2014). Lack of such Early Jurassic (Hettangian) key taxa as Trachysporites fuscus, Cerebropollenites thiergartii, Pinuspollenites minimus, and Heliosporites reissingeri in the material studied also appears to uphold such conclusion.…”

“…oligogranifer-Lophotriletes sangburensis Zone, the oldest (Norian) in the miospore-based zonation scheme instituted for the Mesozoic of northern Iran (Achilles et al, 1984) Beyond Iran, numerous publications exist on palynology of Late Triassic-Early Jurassic sequences worldwide (e.g., Warrington, 2002;Ashraf et al, 2010;Bomfleur et al, 2014). Concavisporites-Duplexisporites problematicus-11 Apiculatisporis heterospininger zone from the upper Rhaetian of Afghanistan (Ashraf, 1977) shares Ovalipollis ovalis as well as all the eponymous index taxa except for Apiculatisporis heterospininger with the tuberculatus-polymicroforatus biozone.…”

Polar Regions of the Mesozoic–Paleogene Greenhouse World as Refugia for Relict Plant Groups

“…Rock samples for analysis of cuticle and other mesofossil content were treated using 48% hydrofluoric for up to 2 months until sufficient amounts of organic residues were obtained, depending on sample material. The organic residues were then carefully neutralized via repeated steps of decanting and adding distilled water, then macerated using Schulze's reagent (40% HNO 3 þ a few crystals of KClO 3 ) for up to 3 h, rinsed Bomfleur et al (2014); radiometric age data adopted from Elsner (2010), Elsner et al (2013), andGoodge andFanning (2010).…”