Middle and Upper Jurassic strata of the Gotnia Basin, onshore Kuwait: Sedimentology, sequence stratigraphy, integrated biostratigraphy and paleoenvironments, Part 2

Optimization of the acetic acid method for microfossil extraction from lithified carbonate rocks: Examples from the Jurassic and Miocene limestones of Saudi Arabia

“…The standard method for microscopic investigation of microfossils in most parts of the Middle East has been through the use of polished thin sections, and the vast majority of recently published studies have used them [1] , [2] , [3] , [4] , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] . Thin sections have been extensively used by the petroleum industry to study microfossils, and foraminifera in particular, from the lithified carbonate reservoirs [15] , [16] , [17] , [18] . Unfortunately, examining foraminifera in thin section has its obvious limitation – as it only allows a two-dimensional view of the specimen.…”

Triassic and Jurassic possible planktonic foraminifera and the assemblages recovered from the Ogrodzieniec Glauconitic Marls Formation (uppermost Callovian and lowermost Oxfordian, Jurassic) of the Polish Basin

“…Fuchs' taxa were discussed by BouDhager-Fadel et al (1997) and BouDhager-Fadel (2015) in a major study of the early planktonic foraminifera. The Jurassic taxa, described by Simmons et al (1997), Gradstein (2017) and Gradstein et al (2017a, b), are clearly Bathonian to Kimmeridgian in age, although Wernli (1988Wernli ( , 1995, Görög (1994), Görög (1999, 2000), Görög and Wernli (2013), Kaminski et al (2018), andde Cabrera et al (2020) have also described planktonic taxa from the Toarcian, Aalenian, Bajocian and Kimmeridgian. There appears to be convincing evidence that the earliest forms that could be regarded as quasiplanktonic or holoplanktonic date from the late Toarcian, and there are a significant number of other groups of microfossils that also became planktonic or expanded their diversity and 1) the brick-works quarry in the Bathonian ore-bearing clays, (2) the sections, away from the main quarry which is the type locality for Globuligerina bathoniana (Pazdrowa, 1969), and (3) the roadside outcrop exposed in our excavations in July 2011.…”