نتایج جستجو برای: maastrichtian

تعداد نتایج: 629  

Journal: :journal of tethys 0

one section of the tarbur formation (462 m thickness) located about 5 km southwest of semirom was studied. it consists of carbonate and terrigenous rocks and contains abundant large benthic foraminifera assigned to the late maastrichtian. in the upper maastrichtian, loftusia is very abundant in carbonate sequence of the middle east tethyan realm. loftusia is an important genus for palaeontologi...

2006
William V. Sliter Mark Leckie

Cretaceous planktonic foraminifers from Ocean Drilling Program (ODP) Leg 130 consist of two age groups: one dominantly Aptian in age and the other dominantly Maastrichtian. The oldest dated sediments from Ontong Java Plateau occur at ODP Site 807 and are assigned to the early Aptian Globigerinelloides blowi Zone. The assemblage correlates closely with Aptian foraminifers from Deep Sea Drilling ...

Journal: :Geologia Croatica 2022

The Late Cretaceous–Early Paleogene (K–Pg) was a critical period of transition in geological time. This encompassed short-term climatic fluctuations on global scale, changes ocean circulation, and sudden large extinctions marine terrestrial organisms. In the study area, located mid to low latitudes, Cretaceous Early were very tectonically active due positioning site close collision zone two con...

Journal: Geopersia 2012
Alireza Ashoori Mohammad Vahidinia Shemshad Ghoorchaei

Benthic foraminiferal assemblages from Maastrichtian strata, Gansserina gansseri-Abathamphalus mayaroensis Planktonic Foraminiferal Zone, of the AbTalkh Formation at Aitamir section (west of the Kopeh-Dagh basin) were investigated in order to evaluate the palaeoenvironmental changes (organic matter flux and bottom-water oxygenation). Maastrichtian faunal assemblages are well preserved and diver...

Journal: :Bulletin of the Geological Society of Denmark 2000

Journal: :journal of sciences, islamic republic of iran 2009
m. asgharian rostami

an abrupt global warming event has been recorded in many parts of the world in sediments of latest maastrichtian age between 65.45-65.10 ma. this warm event was documented here at a section near ziyarat-kola in central alborz based on analysis of planktonic foraminifera. an unusual abundance of normally large-size species such as globotruncana arca, globigerinelloides subcarinatus, pseudoguembe...

Journal: :Acta Geologica Polonica 2023

The Campanian–Paleocene Jaworzynka Formation, a part of the Magura Nappe succession in Polish Outer Carpathians, is described terms its detailed litho- and biostratigraphy. formation stretches along marginal Siary Unit, from stratotype area Silesian Beskid Mts up to Mszana Dolna Wyspowy Mts. Its equivalent Moravskoslezske Beskydy the Czech Republic Solaň Formation. In area, displays complex str...

2009
Carlos Roberto A. Candeiro

The Peirópolis paleontological site (Late Cretaceous, Maastrichtian) in Minas Gerais State, Brazil yielded an important assemblage of fossil vertebrates. The typical occurrence of South American widespread taxa in Peirópolis is important for correlation between the Brazilian Bauru Basin and Argentinean Late Cretaceous basins. The fishes, turtles, anuran, crocodilians and dinosaurs known from Pe...

2014
Dinesh Chandra Sharma Mohd Sajid Khan M Salman Khan Rashmi Srivastava Ashwini Kumar Srivastava Ritu Shukla

The occurrence of a large number of fossil woods having resemblance in anatomical features with the modern palm genus, Phoenix L in Deccan Intertrappean fossil flora of Maastrichtian-Danian age (i. e. Late Cretaceous and Earliest Tertiary (65-67 my)) indicates the most primitive record of date palm. Present discovery of biocompounds from fossil wood of Phoenix collected from Deccan Intertrappea...

Journal: :PeerJ 2016
Victoria M Arbour Lindsay E Zanno Derek W Larson David C Evans Hans-Dieter Sues

Dakotaraptor steini is a recently described dromaeosaurid dinosaur from the Upper Cretaceous (Maastrichtian) Hell Creek Formation of South Dakota. Included within the D. steini hypodigm are three elements originally identified as furculae, one of which was made part of the holotype specimen. We show that the elements described as D. steini 'furculae' are not theropod dinosaur furculae, but are ...

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