Results 71 to 80 of about 13,318 (257)

Holostratigraphy of the Kahmah regional Series in Oman, Qatar, and the United Arab Emirates

open access: yesCarnets de Géologie, 2008
The stratigraphic framework of the uppermost Jurassic - Lower Cretaceous interval of the Gulf area is revised using both historical and recently acquired paleontological (ammonites, calpionellids, foraminifers, 'calcareous' algae), sedimentological and ...
Granier Bruno
doaj  

Insights into the canopy of the iconic Lepidodendron aculeatum, based on new articulated fossils from the Bashkirian (Pennsylvanian) of Hagen‐Vorhalle, Germany

open access: yesPapers in Palaeontology, Volume 12, Issue 5, September/October 2026.
Abstract Lepidodendron aculeatum is an arborescent lycopod that populated the vast coal swamps in north‐western and central Europe during the late Carboniferous (Pennsylvanian) from the Bashkirian onwards, dominating the lush vegetation of tropical wetlands.
Christian Pott, Lothar Schöllmann
wiley   +1 more source

‘The big chunky belemnite’: a new relict megateuthidid from the Oxfordian (Late Jurassic) of Wyoming, USA, and its place in the evolutionary history of the group

open access: yesPapers in Palaeontology, Volume 12, Issue 5, September/October 2026.
Abstract We describe and discuss two finds of large and untypical belemnite rostra originating from the upper part of the Sundance Formation (Oxfordian) of Wyoming, USA. With a diameter reaching c. 60 mm at the anterior end, these rostra are the thickest known for belemnites so far.
Alexey P. Ippolitov   +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)

open access: yesCarnets 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  

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

open access: yesRivista 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   +5 more
doaj   +1 more source

Thallium Isotopes Across the Smithian‐Spathian Boundary: Evidence for Anoxia Throughout Most of the Early Triassic

open access: yesGeobiology, Volume 24, Issue 5, September/October 2026.
ABSTRACT Following the largest known Phanerozoic extinction, the end‐Permian mass extinction, the Early Triassic is often considered an interval of slow biotic recovery. During this time, the minor Smithian‐Spathian extinction occurred, further delaying the biotic recovery of this epoch.
Sean M. Newby   +3 more
wiley   +1 more source

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

open access: yesEuropean 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   +2 more
doaj   +2 more sources

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

open access: yesGeologica 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.   +6 more
doaj   +1 more source

Santonian to Maastrichtian ammonites from Scania, southern Sweden

open access: yes, 1997
Eighteen genera of ammonites are recorded from the Santonian to Maastrichtian rocks of Scania in southern Sweden. Ammonites are fairly common in the Vomb Trough, rare in the Kristianstad Basin and not recorded from the Båstad Basin.
Kennedy, W.J., Christensen, W.K.
core  

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

open access: yesCarnets 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   +4 more
doaj  

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