We report the Narmada Seaway began in India during largest global sea-level transgression and Oceanic Anoxic Event 2 (OAE2) δ13C excursion late Cenomanian to early Turonian. The progressed eastward Turonian-Coniacian reached Jhilmili by end of Maastrichtian. During this time Godavari Seaways may have joined via Narmada-Tapti rift formed a Trans-India Seaway. history major seaway is entombed fos...

carbonate successions of the sarvak formation (late albian? to mid-turonian) together with the carbonate of the ilam formation formed the second important hydrocarbon reservoirs in sw iran and persian gulf. facies analyses were carried out on the upper parts of the sarvak formation in western part of the ahwaz oilfield (az-63 well) to interpret depositional environment. lithologically, the uppe...

Bird fossils from Turonian (ca. 90 Ma) sediments of Axel Heiberg Island (High Canadian Arctic) are among the earliest North American records. The morphology of a large well-preserved humerus supports identification of a new volant, possibly diving, ornithurine species (Tingmiatornis arctica). The new bird fossils are part of a freshwater vertebrate fossil assemblage that documents a period of e...

In this research, the microbiostratigraphy and depositional environmental implications related to the Surgah Formation at the northern flank of the Kuh-e Sepid anticline in the Lorestan Basin are discussed. A study of small planktonic foraminifera from the 101-m-thick Surgah Formation led to the identification of three Turonian–Santonian biozones: (1) Helvetoglobotruncana helvitica, (2) Margino...

Several transitions of Lower to Middle Turonian pelagic marl–limestone-cycles into Oceanic Red Beds were studied at high resolution to gain a better understanding of the Tethyan marine system before and during red bed initiation and development. Samples were analysed for mineralogy, geochemistry, and stable isotope composition. In particular, carbonate geochemistry of diagenetically largely una...

The Late Cretaceous to Early Tertiary subsidence history of the Northern Calcareous Alps (NCA) records the effect of two independent basin formation mechanisms at the northern leading margin of the Austroalpine unit. The terrestrial to shallow-marine sediments of the Lower Gosau Subgroup were deposited mainly within small, fault-bound basins during a phase of strike-slip faulting from the late ...

The eutherian, family-level clade Zhelestidae is consistently although weakly supported in five phylogenetic analyses that we performed on all Cretaceous eutherians. Additionally in the fifth analysis, which included some placentals, Zhelestidae is placed as a stem eutherian clade rather than grouping within the crown clade Placentalia as argued in some previous studies but not others. The subf...

Over the last 15 years a striking pattern of diversification has been documented in the fossil record of benthic marine invertebrates. Higher taxa (orders) tend to originate onshore, diversify offshore, and retreat into deep-water environments. Previous studies attribute this macroevolutionary pattern to a variety of causes, foremost among them the role of nearshore disturbance in providing opp...

The Cenomanian to early Santonian interval is usually considered a time of postrifting tectonic quiescence around the northern margins Iberia that preceded onset Pyrenean convergence by crustal thrusting in latest Santonian. However, plate kinematic models Mesozoic evolution poorly constrain Turonian-Santonian position relative Eurasia. This study reconstructs changes sedimentary facies and arc...