Results 61 to 70 of about 14,034 (253)

The Impact of Global Warming and Anoxia on Marine Benthic Community Dynamics: an Example from the Toarcian (Early Jurassic) [PDF]

, 2013
The Pliensbachian-Toarcian (Early Jurassic) fossil record is an archive of natural data of benthic community response to global warming and marine long-term hypoxia and anoxia.
A Hallam, A Nützel, A Steckbauer, A Tomašových, ALA Johnson, AM Bush, AS Cohen, AS Howard, AS Howard, B Riedel, BA Caswell, BA Caswell, BL Nikitenko, C Korte, CE Savrda, CL Belanger, CR Pearce, Crispin T. S. Little, CTS Little, CTS Little, DB Kemp, E Erba, F Cecca, F García Joral, G Dera, G Dera, G Sælen, G Sælen, G Thorson, GD Price, H-J Röhl, HC Jenkyns, HC Jenkyns, J Pálfy, JB Kruskal, JH Powell, JHS Macquaker, JJ Gómez, JJ Gómez, JM McArthur, JM McArthur, JP Bassoullet, JT Greensmith, JW Valentine, JW Valentine, K Pye, K Roy, KA Morris, KG Miller, KJ Willis, KM Layou, KR Clarke, KR Clarke, KR Clarke, L Schwark, LA Levin, LA Levin, M Aberhan, M Aberhan, M Stachowitsch, Marie-Emilie Clémence, ME Gahr, ME Gahr, ME Patzkowsky, MK Howarth, MK Howarth, MK Howarth, N Bonuso, N Dubilier, PB Wignall, PB Wignall, PB Wignall, PG Oliver, PG Oliver, PJ Harries, Q Li, R Ludvigsen, R Rosenberg, R Vaquer-Sunyer, RB Bucefalo Palliani, RD Pancost, Richard J. Butler, Richard J. Twitchett, RJ Diaz, RJ Diaz, RM Warwick, RM Warwick, RPS Jefferies, RS Hori, S Mailliot, S Schouten, SD Morten, SG Ghadeer, Silvia Danise, SP Hesselbo, TD Olszewski, TR Bailey, W Miller III, W Oschmann, WM Kemp, Ø Hammer   +100 more
core   +5 more sources

A New Approach to the Accretive Growth of Surfaces Via Hyperbolical Kinematics

Mathematical Methods in the Applied Sciences, Volume 48, Issue 16, Page 15349-15363, 15 November 2025.
ABSTRACT In the current work, we introduce the accretive growth of surfaces by using hyperbolical geometry. First, we describe hyperbolical kinematics along a generating curve to construct accretive surfaces having a hyperbolical cross‐section. The obtained surfaces are not only the ones having hyperbolical cross‐sections but also their material points
Gül Tuğ, Zehra Özdemir
wiley   +1 more source

Strontium isotope stratigraphy: LOWESS version 3: best fit to the marine Sr-isotope curve for 0-509 Ma and accompanying look-up table for deriving numerical age [PDF]

, 2001
An improved and updated version of the statistical LOWESS fit to the marine 87Sr/86Sr record and a revised look-up table (V3:10/99; available from j.mcarthur@ucl.ac.uk) based upon it enables straightforward conversion of 87Sr/86Sr to numerical age, and ...
Bailey, T.R., Howarth, R.J., McArthur, J.M.   +2 more
core  

Ammonite-benthic Foraminifera turnovers across the Lower-Middle Jurassic transition in the Lusitanian Basin (Portugal) [PDF]

, 2013
This paper describes and characterises the co-occurrence of ammonite and benthic foraminiferal assemblages across the São Gião outcrop (Central Portugal), a reference section for the Lower-Middle Jurassic boundary in the Lusitanian Basin.
Henriques, Maria Helena Paiva, Luisa Canales, Maria   +1 more
core   +3 more sources

Ecological estimation of using ammonites in jewelry and interior goods

RUDN Journal of Ecology and Life Safety, 2011
Mineral composition has been studied in details, estimation of radiational characteristics of ammonites using in jewelry and interior goods has been conducted.
D A Petrochenkov
doaj  

LATE BARREMIAN-EARLY APTIAN AMMONITES FROM THE MAIOLICA FORMATION NEAR CESANA BRIANZA (LOMBARDY BASIN, NORTHERN ITALY)

Rivista Italiana di Paleontologia e Stratigrafia, 2017
The ammonite faunas collected in three marly interbeds of the Maiolica limestone exposed near Cesana Brianza (Como province, Lombardy) are described in this paper. The age of the first and second interbeds is Late Barremian.
FABRIZIO CECCA, GIOVANNI LANDRA
doaj   +1 more source

Systematic utility of the phytosaur post‐dentary mandibular region

Papers in Palaeontology, Volume 11, Issue 6, November/December 2025.
Abstract Phytosaurs, crocodile‐like archosaurs from the Late Triassic, are known for their unique skull shape, whereas their mandibles are poorly studied. Two‐dimensional (2D) geometric morphometric (GM) analysis is commonly used on dinosaurs and mammals.
Víctor López‐Rojas, Miguel Moreno‐Azanza, Eduardo Puértolas‐Pascual   +2 more
wiley   +1 more source

The age of the Tojeira Formation (Late Jurassic, Early Kimmeridgian), of Montejunto, west-central Portugal [PDF]

, 2017
Precise biostratigraphic dating of the Tojeira Formation (Late Jurassic, Early Kimmeridgian) of the Montejunto section of west-central Portugal, which has yielded important planktonic foraminiferal assemblages, is hindered by poor preservation in the ...
Gale, Andy S., Gradstein, Felix M., Turner, Holly E., Watkins, David K.   +3 more
core   +1 more source

Remagnetization of Lower Cretaceous Limestones in the Western Tethyan Himalaya and Its Tectonic Implications for the India‐Asia Collision

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.
Abstract The drift history of the Tethyan Himalaya provides key constraints on the India‐Asia collision, Himalayan‐Tibetan orogenesis, and associated global climate change. Here we present rock magnetic, petrographic, geochronologic, and paleomagnetic results of the Bolinxiala Formation limestones in the western Tethyan Himalaya.
Siqi Wang, Weiwei Bian, Jiacheng Liang, Jiahui Ma, Xianwei Jiao, Qian Wen, Suo Wang, Jikai Ding, Hanqing Zhao, Haiyan Li, Huaichun Wu, Tianshui Yang, Chenglong Deng   +12 more
wiley   +1 more source

CALIBRATION OF PLIENSBACHIAN CALCAREOUS NANNOFOSSIL EVENTS IN TWO AMMONITE-CONTROLLED SECTIONS FROM NORTHERN SPAIN(BASQUE-CANTABRIAN AREA)

Rivista Italiana di Paleontologia e Stratigrafia, 2002
Common and diverse calcareous nannofossil assemblages were found in two continuous and expanded successions, sedimented on hemipelagic carbonate ramp. Based on refined ammonite biostratigraphy, closely spaced sampling and semiquantitative analysis, the ...
NICOLA PERILLI, MARÍA JOSÉ COMAS-RENGIFO   +1 more
doaj   +1 more source