Results 51 to 60 of about 47,665 (281)

Cortical bone geometry and static gravitational loads in neosauropod dinosaurs: Implications for biomechanical constraints on terrestrial gigantism

The Anatomical Record, EarlyView.
Abstract Sauropod dinosaurs achieved unprecedented terrestrial gigantism, raising questions about the biomechanical limits of bone under extreme gravitational loads. We estimated static gravitational pressures (Pg) on appendicular cortical bone in neosauropods, including diplodocoids, brachiosaurids, and titanosaurs.
Tito Aureliano, Aline M. Ghilardi, Holly N. Woodward, Horácio W. L. Alves, Guilherme M. Sipahi   +4 more
wiley   +1 more source

Cenozoic foraminiferal and dinoflagellate cyst biostratigraphy of the Central North Sea [PDF]

, 1992
We present a detailed Cenozoic biostratigraphy for Paleogene bathyal and Neogene ncritic strata, north of 55° in the central North Sea, and offshore mid-Norway, using both forarninifera and dinoflagellate cysts. Construction of the zonations was assisted
L. Loemo, Gradstein, F. M., Loemo, L., Kaminski, M. A., I. L. Kristiansen, Kristiansen, I. L., M. A. Kaminski, F. M. Gradstein   +7 more
core  

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source

The spore-pollen assemblages of the Miocene Baode Formation from Borehole ZK301 in the Yuncheng Basin and its geological significance

Dizhi lixue xuebao, 2023
The deposition period of the Baode Formation in the Miocene was crucial when the uplift and expansion of the Tibetan Plateau in the NE direction affected the Cenozoic basins around the Ordos Plateau.
FAN Ruyi, YANG Mengmeng, ZHOU Junpeng, ZHAO Jianxin   +3 more
doaj   +1 more source

Land birds on atolls: diversity, origin, and function

Biological Reviews, EarlyView.
ABSTRACT Oceanic islands are global hotspots of avian biodiversity and endemism. Their isolation and distinct environmental conditions have uniquely shaped the evolutionary trajectories of island birds, while, in turn, land bird communities have become critical providers of ecological functions to island ecosystems.
Sebastian Steibl, Alex S. Wegmann, Nick D. Holmes, Caitlin E. Andrews, Gérard Rocamora, Simon Ducatez, James C. Russell   +6 more
wiley   +1 more source

TAXONOMY AND AFFINITIES OF AFRICAN CENOZOIC METATHERIANS

Spanish Journal of Palaeontology, 2021
The record of extinct African metatherians (Mammalia, Theria) is scanty, restricted in time (Eocene–Miocene), and its taxonomy is still subject of debate. A review of all African metatherians, or alleged metatherians, known up to now, led us to the recognition of only three taxa referable to this group: (1) Kasserinotherium tunisiense (Peradectoidea?),
Crespo Roures, Vicente Daniel, Goin, Francisco Javier   +1 more
openaire   +4 more sources

Discriminating cool-water from warm-water carbonates and their diagenetic environments using element geochemistry: the Oligocene Tikorangi Formation (Taranaki Basin) and the dolomite effect [PDF]

, 2004
Fields portrayed within bivariate element plots have been used to distinguish between carbonates formed in warm- (tropical) water and cool- (temperate) water depositional settings.
Nelson, Campbell S., Hood, Steven D., Campbell S. Nelson, Kamp, Peter J.J., Steven D. Hood, Peter J. J. Kamp   +5 more
core   +1 more source

150 million years of freshwater fish biogeography: vicariance or dispersal? [PDF]

Research & Knowledge, 2017
Freshwater fishes are supposedly good case studies to test palaeobiogeographical models because they are attached to land masses, at least primary freshwater fishes, which are unable to cross marine barriers.
Lionel Cavin
doaj   +1 more source

The Cenozoic palaeoenvironment of the Arctic Ocean [PDF]

Nature, 2006
The history of the Arctic Ocean during the Cenozoic era (0-65 million years ago) is largely unknown from direct evidence. Here we present a Cenozoic palaeoceanographic record constructed from >400 m of sediment core from a recent drilling expedition to the Lomonosov ridge in the Arctic Ocean.
Moran, Kathryn, Backman, Jan, Brinkhuis, Henk, Clemens, Steven, Cronin, Thomas, Dickens, Gerald, Eynaud, Frédérique, Gattacceca, J., Jakobsson, Martin, Jordan, Richard, Kaminski, Michael, King, John, Koc, Nalan, Krylov, Alexey, Martinez, Nahysa, Matthiessen, Jens, Mcinroy, David, Moore, Theodore, Onodera, Jonaotaro, O'Regan, Matthew, Pälike, Heiko, Rea, Brice, Rio, Domenico, Sakamoto, Tatsuhiko, Smith, David, Stein, Ruediger, St John, Kristen, Suto, Itsuki, Suzuki, Noritoshi, Takahashi, Kozo, Watanabe, Mahito, Yamamoto, Masanobu, Farrell, John, Frank, Martin, Kubik, Peter, Jokat, Wilfried, Kristoffersen, Yngve   +36 more
openaire   +5 more sources

Hot and cold deserts as eco‐evolutionary arenas for understanding plant resistance to multiple abiotic stressors

Biological Reviews, EarlyView.
ABSTRACT During their long evolutionary history, land plants have evolved a range of adaptations to different abiotic stressors. These help explain present‐day diversity and distribution patterns, as well as the potential resilience of natural and agricultural systems to a changing climate. Most previous research has focused on adaptation to individual
Marc Fradera‐Soler, Natasha Barbolini, Anže Žerdoner Čalasan, Marian Schubert, Catarina Rydin, Olwen M. Grace, Aelys M. Humphreys   +6 more
wiley   +1 more source