Results 31 to 40 of about 384 (104)

Az Óbányai Aleurolit Formáció fekete palájának izotópgeokémiai és szénhidrogéngenetikai jellemzése | Isotope geochemistry and characterization of hydrocarbon potential of black shale from Óbánya Siltstone Formation [PDF]

open access: yes, 2007
A toarci Óbányai Aleurolit Formáció réka-völgyi szelvényének (Mecsek hegység) alsó részéből gyűjtött fekete pala minták összes szerves szén-tartalma a laminált kőzettípusban 3,89–8,12%, a vékonyréteges változatban 2,14–3,29%.
Hámorné Vidó, Mária   +3 more
core  

Temnodontosaurus bromalites from the Lower Jurassic of Germany: hunting, digestive taphonomy and prey preferences in a macropredatory ichthyosaur

open access: yesPapers in Palaeontology, Volume 11, Issue 3, May/June 2025.
Abstract Fossilized food items found in or passed through the digestive tract of an animal (bromalites) offer a window into the dietary habits and ecological role of the producer taxon. Bromalites have been documented from several small to mid‐sized parvipelvian ichthyosaurian species from the Lower Jurassic, but are seldom documented for the largest ...
Giovanni Serafini   +3 more
wiley   +1 more source

Ammonitenfauna und Stratigraphie des Grenzbereichs Jurensismergel/Opalinuston-Formation bei Neumarkt i.d. Opf. (oberstes Toarcium, Fränkische Alb) [PDF]

open access: yes, 2010
Ein temporärer Aufschluß bei Pölling westlich Neumarkt i.d.Opf. erschloß 1,7 m blaugraue Mergelsteine der Jurensismergel–Formation und knapp 2,0 m blaugraue Tonmergel der Opalinuston–Formation mit zahlreichen Ammoniten, Belemniten und kleinwüchsigem ...
Arp, Gernot
core   +1 more source

First teuthid cephalopod from the Lower Jurassic of South America (Neuquén Basin, Argentina) [PDF]

open access: yes, 2005
A new species of squid, Teudopsis jeletzkyi n. sp., is described from the Toarcian (Lower Jurassic) of the Los Molles Formation in Neuquen Province, central west Argentina. Fossil squids have thus far been unknown in the Mesozoic of South America.
Riccardi, A. C.
core   +4 more sources

Float, explode or sink: postmortem fate of lung-breathing marine vertebrates [PDF]

open access: yes, 2018
What happens after the death of a marine tetrapod in seawater? Palaeontologists and neontologists have claimed that large lung-breathing marine tetrapods such as ichthyosaurs had a lower density than seawater, implying that their carcasses floated at the
Benecke, Mark   +7 more
core  

End-Triassic calcification crisis and blooms of organic-walled 'disaster species' [PDF]

open access: yes, 2007
The Triassic–Jurassic (T–J) mass-extinction event is marked by isotope anomalies in organic (δ13Corg) and carbonate carbon (δ13Ccarb) reservoirs. These have been attributed to a (rapid) 4-fold rise in pCO2 as a result of massive flood basalt volcanism ...
Bailey, T. R.   +8 more
core   +2 more sources

First record of the leptonectid ichthyosaur Eurhinosaurus longirostris from the Early Jurassic of Switzerland and its stratigraphic framework [PDF]

open access: yes, 2018
An incomplete skull of the leptonectid ichthyosaur Eurhinosaurus longirostris found in the Rietheim Member (previously "Posidonienschiefer”; Toarcian, Early Jurassic) of Staffelegg, Canton Aargau, is the first record from Switzerland of this taxon and ...
Maisch, Michael   +2 more
core  

Uncovering the diversification history of marine tetrapods: ecology influences the effect of geological sampling biases [PDF]

open access: yes, 2011
Mesozoic terrestrial vertebrates gave rise to sea-going forms independently among the ichthyosaurs, sauropterygians, thalattosaurs, crocodyliforms, turtles, squamates, and other lineages. Many passed through a shallow marine phase before becoming adapted
Benson, R. B. J., Butler, R. J.
core   +1 more source

No effect of thermal maturity on the Mo-, U-, Cd- and Zn-isotope compositions of Lower Jurassic organic-rich sediments [PDF]

open access: yes, 2022
The isotope ratios of redox-sensitive metals in organic-rich rocks are critical tools for quantifying the timing and severity of deoxygenation and nutrient cycling in Earth’s past.
Celestino, R   +10 more
core   +2 more sources

The Staffelegg Formation: a new stratigraphic scheme for the Early Jurassic of northern Switzerland [PDF]

open access: yes, 2018
The deposits of the Early Jurassic in northern Switzerland accumulated in the relatively slowly subsiding transition zone between the southwestern part of the Swabian basin and the eastern part of the Paris basin under fully marine conditions ...
Jordan, Peter   +3 more
core  

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