Even though a handful of long-lived reptilian clades dominated Mesozoic marine ecosystems, several biotic turnovers drastically changed the taxonomic composition these communities. A seemingly slow paced, within-geological period turnover took place across Early–Middle Jurassic transition. This saw demise early neoichthyosaurians, rhomaleosaurid plesiosaurians and plesiosauroids in favour ophth...

The Upper Bajocian- Lower Bathonian succession in the Kopet-Dagh Basin of NE Iran represents fluvio-deltaic to turbidite deposits. The Kashafrud Formation provides an excellent opportunity to study the interplay between deep-water sedimentation and syndepositional tectonic subsidence (or uplift) in the region. The effects of these processes caused sea-level changes, variation in depositional se...

The study area is situated in the Middle part of the Tabas Block. It contains outcrops of rocks that formed along longitudinal faults in Early Cimmerian orogenic phase. The basin subsided along these faults from the Late Triassic to Early Cretaceous, which include two sedimentary cycles. A sedimentary cycle, related to Upper Triassic to Bajocian is known as Shemshak group. Another sedimentary c...

The oldest rocks within the Kachchh Basin belong to the sediments of Kaladongar Formation exposed in Kuar Bet, Pachchham Island (western India). The Formation’s lowest unit, the Dingi Hill Member has yielded a moderately diversified calcareous nannofossil assemblage that includes the marker species of Lotharingius contractus and Triscutum sullivanii of late Early Aalenian age associated with re...

The otoliths described in this study are from the late Pliensbachian of Buttenheim clay pit near Bamberg, Franconia, northern Bavaria, and represent one earliest teleost otolith assemblages known so far. A total 351 have been recovered, many which well-preserved sizes that indicate they originated adult specimens can be considered morphologically mature. assemblage contains seven species, four ...

The Sea of Hebrides Basin and Minch are late Paleozoic–Mesozoic rift basins located to the NW Scottish mainland. were target small-scale petroleum exploration from 1960s early 1990s, with a total three wells drilled within two between 1989 1991. Although no commercially viable discoveries made, numerous shows identified both basins, including gas show Upper Glen 1 well in Lower Jurassic limesto...

Abstract Globuligerina glinskikhae nov. sp. Gradstein & Waskowska and waskowskae are new species of Jurassic planktonic foraminifera from the Middle Dagestan Poland. G. with its remarkable ‘protoglobigerine’ test may be an early evolutionary offshoot oxfordiana (Grigelis). It index taxon for upper Bajocian through Bathonian strata in Eastern Europe Southwest Asia, might recognizable also th...