Results 41 to 50 of about 3,719 (167)

Evolution in arid environments: the role of betalains, succulence, and medullary bundles

New Phytologist, EarlyView.
Overview of the study system. Summary The flowering plant clade Caryophyllales includes many succulent species that grow in drought conditions. Many Caryophyllales species also have betalain pigmentation and medullary bundles, both of which have been linked to stress tolerance, albeit with less precise functional characterisation.
Tom Carruthers, Samuel F. Brockington, Hiroshi A. Maeda, Gregory W. Stull, Nathanael Walker‐Hale, Ya Yang, Stephen A. Smith   +6 more
wiley   +1 more source

Santonian–Campanian Calcareous Nannofossil Paleobiogeography [PDF]

, 2016
Calcareous nannofossil abundance data from 11 DSDP/ODP sites were analyzed by multivariate methods to assess the paleoceanographic change that is associated with the Santonian-Campanian boundary transition.
Moore, Brandi R.
core  

Definition and global correlation of the Santonian-Campanian boundary

, 1995
Review of biostratigraphical evidence from different regions shows that criteria used by workers on various marine fossil groups to define the Santonian-Campanian boundary differ considerably in relative age and position.
Burnett, JA, J.A. Burnett, Gale, AS, Montgomery, P, W.J. Kennedy, P. Montgomery, Kennedy, William, J.M. Hancock, J.M. McArthur, A.S. Gale, Hancock, JM, Kennedy, WJ, McArthur, JM   +12 more
core   +1 more source

NEW DATA ON THE MID- TO UPPER CRETACEOUS SUCCESSION OF EASTERN SARDINIA IN THE FRAMEWORK OF THE GEOLOGICAL EVOLUTION OF THE TETHYAN REALM

Rivista Italiana di Paleontologia e Stratigrafia
Aimed at integrating knowledge of the Mesozoic succession of eastern Sardinia, two sections of Cenomanian and Santonian ages are presented, and their lithostratigraphical, palaeontological, and biostratigraphical features are described in detail.
IGINIO DIENI, Francesco Massari, MARIA ROSE PETRIZZO, MARIUSZ A. SALAMON   +3 more
doaj   +1 more source

LOCALIDADES FOSSILÍFERAS DO CRETÁCEO SUPERIOR DA REGIÃO DO TRIÂNGULO MINEIRO (ESTADO DE MINAS GERAIS, BRASIL) / Fossil localities from the Upper Cretaceous of Triângulo Mineiro region (Minas Gerais State, Brazil) [PDF]

Sociedade & Natureza, 2006
Invertebrate and vertebrate fossils have been found in the Bauru Group rocks (Upper CretaceousBauru Group) in the Triângulo Mineiro region, western Minas Gerais State, Brazil since 1940. TheAdamantina (Turonian-Santonian), Uberaba (Coniacian-Santonian) e
Adriano R. Santos, Emerson C. de Oliveira, Carlos Roberto A. Candeiro   +2 more
doaj  

Osteological correlates of the respiratory and vascular systems in the neural canals of Mesozoic ornithurines Ichthyornis and Janavis

The Anatomical Record, Volume 309, Issue 10, Page 2725-2738, October 2026.
Abstract In birds, the neural canal houses a variety of anatomical structures including the spinal cord, meninges, spinal vasculature, and respiratory diverticula. Among these, paramedullary diverticula and the extradural dorsal spinal vein may leave behind osteological correlates in the form of pneumatic foramina and fossae, and a bilobed geometry of ...
Jessie Atterholt, M. Grace Burton, Mathew J. Wedel, Juan Benito, Ellen Fricano, Daniel J. Field   +5 more
wiley   +1 more source

The gaudryceratid ammonoids from the Upper Cretaceous of the James Ross Basin, Antarctica [PDF]

Acta Palaeontologica Polonica, 2019
We describe new material of the subfamily Gaudryceratinae in Antarctica, including five new species: Gaudryceras submurdochi Raffi and Olivero sp. nov., Anagaudryceras calabozoi Raffi and Olivero sp.
María E. Raffi, Eduardo B. Olivero, Florencia N. Milanese   +2 more
doaj   +1 more source

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

Journal of Petroleum Geology, Volume 49, Issue 4, Page 1179-1194, October 2026.
ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi, Alan P. Heward, Lorraine B. Eglinton, Steve R. Packer, Darrin T. Stead   +4 more
wiley   +1 more source

Flexural bulges and foredeep basins: Dynamic tectonic control on shifting depocentres and condensed facies, Upper Cretaceous (Santonian), Western Canada Foreland Basin

The Depositional Record, Volume 12, Issue 4, September 2026.
Allostratigraphically defined mudstone packages show marked along‐strike thickness variation, interpreted to be related to shifting thrust activity in the orogen; loading cycles lasted about 750 kyr. Close to the orogen, the forebulge is mantled by shelly sandstone whereas far from the orogen, the forebulge is typified by organic‐rich mudstone ...
Omar N. Al‐Mufti, A. Guy Plint, El‐Mahadia I. Mohammed, Ireneusz Walaszczyk, Y. Greg Hu   +4 more
wiley   +1 more source

Santonian macrofauna and nannofossils from northeast Belgium [PDF]

, 1995
From a limited number of mine shafts in the Belgian province of Limburg (Houthalen and Zolder/Voort areas), a small fauna comprising ammonites, belemnites and inoceramid bivalves is described. A nannofossil analysis of samples taken from the ammonites is
Jagt, JWM, Burnett, JA, Dhondt, AV, Burnett, J.A., Kennedy, William, Christensen, W.K., Burnet, J.A., Dhondt, Annie V., Jagt, J.W.M., Christensen, WK, Kennedy, W.J., Dhondt, A.V., Kennedy, WJ   +12 more
core   +1 more source