Results 71 to 80 of about 12,862 (208)

Stable isotope (δ18O and δ13C) sclerochronology of Callovian (Middle Jurassic) bivalves (Gryphaea (Bilobissa) dilobotes) and belemnites (Cylindroteuthis puzosiana) from the Peterborough Member of the Oxford Clay Formation (Cambridgeshire, England): Evidence of palaeoclimate, water depth and belemnite behaviour [PDF]

, 2014
Incremental δ18O and δ13C signals were obtained from three well-preserved specimens of Cylindroteuthis puzosiana and from three well-preserved specimens of Gryphaea (Bilobissa) dilobotes from the Peterborough Member of the Oxford Clay Formation ...
A.L.A. Johnson, Alberti, Anderson, Anderson, Arkhipkin, Arkhipkin, Arthur, B.R. Schöne, Barbin, Barbin, Belin, Bodin, Bradshaw, Brigaud, C. Mettam, Dera, Dickson, Doyle, Doyle, Duff, Dunca, Dutton, E.V. Nunn, Frakes, Frakes, Heilmayer, Hewitt, Hudson, Hudson, Hudson, Hudson, Johnson, Jones, Kenig, Kenig, Lartaud, Li, Li, Lécuyer, Macquaker, Martill, McArthur, Morgans, Morgans, Mutterlose, Mutterlose, NOAA, Norry, Nunn, Nunn, O'Neill, Page, Pierre, Poulsen, Price, Price, Price, Price, Price, Price, Price, Price, Price, Rexfort, Rosales, Rosales, Scheurle, Schöne, Schöne, Sellwood, Steuber, Thiery, Tomašovўch, Voigt, Westermann, Wierzbowski, Wierzbowski, Wierzbowski, Wierzbowski, Wilby, Ziegler, Žák   +81 more
core   +3 more sources

Ichnological insights into deoxygenation across the Cenomanian–Turonian Boundary Oceanic Anoxic Event 2 in the northern extent of Western Interior Seaway (west‐central Alberta)

Sedimentology, Volume 73, Issue 2, Page 355-390, February 2026.
ABSTRACT In‐depth ichnological and sedimentological analyses of the Cenomanian–Turonian boundary Oceanic Anoxic Event (OAE2) from the Western Interior Seaway of west‐central Alberta reveal a persistent physico‐chemically stressed setting. The interval is characterised by a dominantly diminutive and diminished ichnological assemblage, with familiar ...
Sara K. Biddle, Murray K. Gingras
wiley   +1 more source

THE “UNKNOWN” GREEK PALEOENVIRONMENT AND FOSSILS: EVALUATING GEOGRAPHY CURRICULUM PROPOSALS FOR ELEMENTARY SCHOOL

European Journal of Geography, 2017
In this study we introduce teaching proposals to “inject” ammonite fossils, in the Geography syllabus, as evidence of Greek paleoenvironment, which at the moment is the only existing geoscience subject of Greek primary curriculum.
Stiliani Fragouli, Αggeliki Rokka, Apostolia Galani   +2 more
doaj   +2 more sources

MIDDLE JURASSIC BELEMNITES AND AMMONITES (CEPHALOPODA) FROM TELMA-DAREH, NORTHERN IRAN

Rivista Italiana di Paleontologia e Stratigrafia, 2013
Ammonites and belemnites from a Middle Jurassic section at Telma-Dareh (Alborz Mountains, northern Iran) are described. The lithology of the studied section consists of an alternation of marls and limestones attributed to the Dalichai Fm., overlying the ...
HORACIO PARENT, ROBERT WEIS, NINO MARIOTTI, MOSTAFA FALAHATGAR, GÜNTER SCHWEIGERT, MOJTABA JAVIDAN   +5 more
doaj   +1 more source

From Quarries to Urban Construction Sites: Middle‐Late Mesozoic Limestones in the Public Architecture of Roman Verona, Italy

Geoarchaeology, Volume 41, Issue 1, January/February 2026.
ABSTRACT Numerous buildings, monuments, and infrastructural works in Verona were constructed during the Roman period using stone, a material abundantly available from quarrying areas located relatively close to the city. Petrographic investigations conducted by Transmitted Polarized Light Optical Microscopy (TPL‐OM) and complemented by colorimetric ...
Eliana Bridi, Simone Dilaria, Jacopo Bonetto, Caterina Previato   +3 more
wiley   +1 more source

Zones d'ammonites et de foraminifères du Vraconnien au Turonien : Une comparasion entre les domaines boréal et téthysien (NW Europe / Tunisie centrale)

Carnets de Géologie, 2008
Depuis la fin du 19ème siècle, l'intervalle comprenant l'Albien supérieur élevé, le Cénomanien, le Turonien et le Coniacien basal a été subdivisé d'abord en zones d'ammonites puis, à partir du milieu du 20ème siècle, en zones de foraminifères ...
Amédro Francis, Robaszynski Francis
doaj  

Cenomanian Ammonite Zones [PDF]

Geological Magazine, 1960
A preliminary statement is made concerning the ammonite genera which have been used in defining the upper Cenomanian (Cretaceous) in Britain. The relations, positions, and characteristics of species of Mantelliceras, Metoicoceras, Utaturiceras, and Protacanthoceras are briefly explained and the need for a change in zonal nomenclature of the uppermost ...
openaire   +1 more source

Caenogastropods and heterobranch gastropods from the Hettangian deposits of Luxembourg: palaeobiogeography and Early Jurassic faunal recovery in the western Tethys

Papers in Palaeontology, Volume 12, Issue 1, January/February 2026.
Abstract We describe the Hettangian Caenogastropoda and Heterobranchia of the Luxembourg Sandstone Formation, a wedge of clastic sediments deposited along the eastern margin of Paris Basin during the Early Jurassic. Five new genera and 11 new species are erected: Bourguetia bipartita sp. nov., Globularia delsatei sp. nov., Oonia feidtorum sp.
Stefano Monari, Roberto Gatto, Mara Valentini, Robert Weis   +3 more
wiley   +1 more source

The Douvilleiceratidae (Ammonoidea) of the Lower Aptian historical stratotype area at Cassis-La Bédoule (SE France)

Carnets de Géologie, 2008
Recent biostratigraphic research in the marly limestones of the Cassis-La Bédoule area (SE France) provided a rich macrofauna of Douvilleiceratidae Parona & Bonarelli, 1897. From the uppermost Barremian (Pseudocrioceras waagenoides Subzone) to the middle
Tronchetti Guy, Conte Gabriel, Moullade Michel, Ropolo Pierre, Gonnet Roland   +4 more
doaj  

Ammonites and magnetostratigraphy of the Berriasian–Valanginian boundary deposits from eastern Crimea

Geologica Carpathica, 2017
Euthymi, Crassicostatum and Callisto ammonite subzones, correlable with Paramimounum, Picteti, and Alpillensis subzones and probably with the Late Berriasian Otopeta Subzone of the Boissieri Standard Zone have been recognized in calcareous clays of the ...
Arkadiev Vladimir V., Grishchenko Vladimir A., Guzhikov Andrei Yu., Manikin Aleksey G., Savelieva Yuliya N., Feodorova Anna A., Shurekova Olga V.   +6 more
doaj   +1 more source