Results 31 to 40 of about 4,344 (221)

New ophthalmosaurid ichthyosaurs from the European lower cretaceous demonstrate extensive ichthyosaur survival across the Jurassic–Cretaceous boundary [PDF]

, 2012
Background Ichthyosauria is a diverse clade of marine amniotes that spanned most of the Mesozoic. Until recently, most authors interpreted the fossil record as showing that three major extinction events affected this group during its history: one ...
A Sirotti, AM Kirton, AS Romer, B Choo, BP Kear, Brock Fenton, C Kolb, C McGowan, C McGowan, C McGowan, C McGowan, C McGowan, C McGowan, CW Andrews, CW Andrews, CW Gilmore, CW Gilmore, Darren Naish, DV Efimov, E Seibertz, EE Maxwell, EE Maxwell, EE Maxwell, EE Maxwell, EE Maxwell, F Broili, F Broili, F Lethiers, Fritz J. Krüger, G Baur, HG Seeley, JA Massare, Jeff Liston, Jessica Tainsh, Judith Pardo Pérez, JW Neale, JW Neale, K Nixon, M Fernández, M Fernández, M Fernández, M Foote, M Wade, M Wade, M Zammit, MA Woods, Michael W. Maisch, MS Arkhangelsky, MS Arkhangelsky, MS Arkhangelsky, MT Young, MT Young, MW Maisch, M–C Buchy, N Bardet, N Bardet, N Bardet, N Bardet, N Bardet, N Bardet, N Bardet, NC Arens, P Goloboff, PC Ensom, PF Rawson, PM Barrett, PM Hopson, PM Sander, PM Thorne, PS Druckenmiller, R Araújo, R Forrest, R Johnson, R Motani, R Motani, Ralf Kosma, RB Benson, RJ Butler, RM Appleby, Robert M. Appleby, RT Bakker, S Lindström, SE Peters, T Danelian, T Lingham-Soliar, Ulrich Joger, V Fischer, V Fischer, V Fischer, Valentin Fischer, VM Efimov, W Kiprijanoff   +91 more
core   +6 more sources

Lithocodium and Bacinella signature of a late Hauterivian, local microbial event: the Urgonian limestone in South-East France

Geologia Croatica, 2008
Sediment binding crusts of Lithocodium aggregatum and associated Bacinella irregularis abound in a shallow water limestone layer, in South-East France.
Marc A. Conrad, Bernard Clavel
doaj   +1 more source

Ostracods and Biostratigraphy of Sarmord Formation (Lower Cretaceous), Surdash Anticline, Sulaimani, Kurdistan Province, North of Iraq

Iraqi Geological Journal, 2023
A detiled systematic study of ostracods fauna in outcropped section of Sarmord Formation (Hauterivian -Barremian) in Surdash Anticline allows to detect 28 species belong to 16 genera.
Omran Hawramy, Nisreen Aziz, Waleed Al- Obidee, Hazhar Ali   +3 more
doaj   +1 more source

Exhumation of the Sierra de Cameros (Iberian Range, Spain): constraints from low-temperature thermochronology [PDF]

, 2008
We present new fission-track and (U–Th)/He data from apatite and zircon in order to reconstruct the exhumation of the Sierra de Cameros, in the northwestern part of Iberian Range, Spain. Zircon fission-track ages from samples from the depocentre of the
Casquet, F. M. Stuart, Foeken, Gil-Imaz, Gil-Imaz, Gil-Imaz, Goldberg, Guiraud, Hurford, Ketcham, L. Barbero, Mas, Mas, Mata, Muñoz, P. Del Río, Schudack, Tischer   +17 more
core   +2 more sources

The Stratigraphic Record of Pre-breakup Geodynamics: Evidence from the Barrow Delta, offshore Northwest Australia [PDF]

, 2016
The structural and stratigraphic evolution of rift basins and passive margins has been widely studied, with many analyses demonstrating that delta systems can provide important records of post-rift geodynamic processes.
Bastow, ID, Bell, RE, Jackson, CA-L, Magee, C, Reeve, MT   +4 more
core   +2 more sources

Eocene Limestones Overlying Lower Cretaceous Deposits of Western lstria (Croatia): Did Some Parts of Present lstria Form Land During the Cretaceous?

Geologia Croatica, 2010
In the region of the western Istrian anticline, erosional remains of the transgressive Eocene Foraminiferal limestones overly shallow waterdeposits of Early Cretaceous age (Valanginian, Hauterivian andBarremian).
Dubravko Matičec, Igor Vlahović, Ivo Velić, Josip Tišljar   +3 more
doaj   +1 more source

Sea surface temperature contributes to marine crocodylomorph evolution [PDF]

, 2014
During the Mesozoic and Cenozoic, four distinct crocodylomorph lineages colonized the marine environment. They were conspicuously absent from high latitudes, which in the Mesozoic were occupied by warm-blooded ichthyosaurs and plesiosaurs.
Amiot, Romain, Benton, Michael J, Lécuyer, Christophe, Martin, Jeremy E   +3 more
core   +3 more sources

A new coral family and three new genera from the Lower Cretaceous of Puebla and Sonora (Scleractinia; Mexico)

Revista Mexicana de Ciencias Geológicas, 2022
Solitary corals currently assigned to the genus Plesiosmilia are common elements in Late Jurassic to Early Cretaceous coral faunas. The genus itself is poorly defined and its systematic position is questionable.
Hannes Löser
doaj   +1 more source

Filling the Gap: New Precise Early Cretaceous Radioisotopic Ages from the Andes [PDF]

, 2015
Two tuffs in the Lower Cretaceous Agrio Formation, Neuquén Basin, provided U–Pb zircon radioisotopic ages of 129.09 ± 0.16 Ma and 127.42 ± 0.15 Ma.
Aguirre-Urreta, ANDREA CONCHEYRO, Applegate, BEATRIZ AGUIRRE-URRETA, Bergen, Brinkmann, Charrier, Cohen, Concheyro, Condon, Gradstein, Gulisano, Leanza, MAISA TUNIK, MARINA LESCANO, MARK D. SCHMITZ, Mutterlose, Naipauer, Ogg, Ogg, Parada, PETER F. RAWSON, Rutledge, Sissingh, Spalletti, VICTOR A. RAMOS, Weaver, Wimbledon   +27 more
core   +3 more sources

The magnetic polarity stratigraphy of a Hauterivian/Barremian carbonate sequence from southern Italy [PDF]

Geophysical Journal International, 1998
SUMMARY Remanence directions, measured at 2 cm intervals along a composite 88 m bore-core, enable mean palaeomagnetic poles to be defined at 13.6°S, 25.2°W and 13.6°N, 154.8°E. The directions of remanence vary very smoothly away from each palaeomagnetic pole, extending more than 90° from them.
IORIO M, TARLING DH, D'ARGENIO B
openaire   +4 more sources