Results 41 to 50 of about 1,827,079 (176)

Palaeoclimatology, stratigraphy and biotic responses in the middle Eocene

, 2008
The Middle Eocene (37 to 49 million years ago, Ma) was characterised by warmer global temperatures and higher atmospheric carbon dioxide (pCO2) levels than today with onlysmall/non-existant icesheets.
Edgar, Kirsty M, Edgar, Kirsty M.
core   +1 more source

Environmental distribution of post-Palaeozoic crinoids from the Iberian and south-Pyrenean basins, NE Spain [PDF]

Acta Palaeontologica Polonica, 2018
Post-Palaeozoic crinoids from northeast Spain ranging from the Ladinian (Middle Triassic) to the Ilerdian (lower Ypresian, early Eocene) are documented.
Samuel Zamora, Marcos Aurell, Margaret Veitch, James Saulsbury, Mikel A. López-Horgue, Fernando A. Ferratges, José Antonio Arz, Tomasz K. Baumiller   +7 more
doaj  

A new small-bodied azhdarchoid pterosaur from the Lower Cretaceous of England and its implications for pterosaur anatomy, diversity and phylogeny

, 2013
BackgroundPterosaurs have been known from the Cretaceous sediments of the Isle of Wight (southern England, United Kingdom) since 1870. We describe the three-dimensional pelvic girdle and associated vertebrae of a small near-adult pterodactyloid from the ...
Darren Naish (115424), Dyke Gareth, Naish, Darren, Naish Darren, Simpson Martin, Darren Naish, Dyke, Gareth, Simpson, Martin, Gareth Dyke, Martin Simpson, Martin Simpson (390859), Gareth Dyke (390860)   +11 more
core   +1 more source

Lower Aptian ammonite and carbon isotope stratigraphy in the eastern Prebetic Domain (Betic Cordillera, southeastern Spain)

Geologica Acta, 2012
Major global palaeobiologic and palaeoenvironmental changes occurred during the Early Aptian. Precise dating and timing of the different events is crucial to determine possible cause-effect relationships between them.
J.A. MORENO BEDMAR, M. COMPANY, J. SANDOVAL, J.M. TAVERA, T. BOVER-ARNAL, R. SALAS, G. DELANOY, F.J.-M.R. MAURRASSE, R. MARTÍNEZ   +8 more
doaj  

Carbonate Stable Isotope Data Suggest Freshwater Environment for the McMurray Formation (Aptian), Alberta, Canada

Geosciences
Stable isotope, trace element, and cathodoluminescence analyses were performed on gastropods and matrix from rock cores of the Middle to Upper McMurray Formation (Lower Cretaceous/Aptian, Northwestern Alberta, Canada) to characterize the extent to which ...
Franek Hasiuk, Abdullah Wahbi, Luis González, Mike Blum, Greg Ludvigson   +4 more
doaj   +1 more source

Lower Aptian ammonite biostratigraphy in the Maestrat Basin (Eastern Iberian Chain, Eastern Spain). A Tethyan transgressive record enhanced by synrift subsidence

Geologica Acta, 2010
The present paper analyses the stratigraphic distribution of ammonites collected in the Lower Aptian sediments of the Maestrat Basin (E Spain). The faunal successions obtained from the systematic sampling of ten selected sections located in several sub ...
J.A. MORENO BEDMAR, M. COMPANY, T. BOVER ARNAL, R. SALAS, G. DELANOY, F.J.-M.R. MAURRASSE, A. GRAUGES, R. MARTÍNEZ   +7 more
doaj  

Aptian ammonites of Abu Dhabi (United Arab Emirates) [Ammonites aptiennes d'Abou Dabi (Émirats Arabes Unis)]

Carnets de Géologie, 2011
The identification of some twenty ammonite fragments from oil wells drilled in offshore Abu Dhabi revealed the presence of six Aptian genera: Cheloniceras, Epicheloniceras, Gargasiceras, Colombiceras, Pseudohaploceras, and Macroscaphites. These ammonites
Robert Busnardo, Bruno Granier
doaj  

Biostratigraphic correlation of the western and eastern margins of the Labrador–Baffin Seaway and implications for the regional geology. Appendix 3 [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2016
New analyses of the palynological assemblages in 13 offshore wells on the Canadian margin and six on the West Greenland Margin, in conjunction with onshore data, have led to a new biostratigraphic framework for the Cretaceous–Cenozoic strata of the ...
Henrik Nøhr-Hansen, Graham L. Williams , Robert A. Fensome   +2 more
doaj  

Upper Aptian Serre Chaitieu (Niveau Fallot) grey values and susceptibility

, 2003
Upper Aptian Serre Chaitieu (Niveau Fallot) grey values and ...
Friedrich, Oliver, Oliver Friedrich (6962279)   +1 more
core   +1 more source

Les Phylloceratoidea (Ammonoidea) aptiens et albiens du bassin vocontien (Sud-Est de la France) [Aptian and Albian Phylloceratids (Ammonoidea) from the Vocontian Basin (SE France)]

Carnets de Géologie, 2008
More than 2,200 pyritized ammonites of the Superfamily Phylloceratatoidea have been collected in consonance with the scale of the ammonite zonation of the expanded Marnes Bleues Fm in the Vocontian Basin (SE France).
Joly Bernard, Delamette Michel
doaj