Results 61 to 70 of about 31,099 (302)

Introduction: New Discoveries and Theoretical Implications for the Last Foraging and First Farming in East Asia

Quaternary, 2021
Worldwide, scientific understanding about domestication and the origins of food production is undergoing rapid change based on new data from discoveries in paleoclimates and environments, paleobiology, and archaeology [...]
Pei-Lin Yu, Kazunobu Ikeya, Meng Zhang
doaj   +1 more source

The relationship between form and function of the carnivore mandible

The Anatomical Record, EarlyView.
Abstract Dietary morphology diversified extensively in Carnivoraformes (living Carnivora and their stem relatives) during the Cenozoic (the last 66 million years) as they evolved to capture, handle, and process new animal and plant diets. We used 3D geometric morphometrics, mechanical advantage, and finite element analysis to test the evolutionary ...
Charles J. Salcido, P. David Polly
wiley   +1 more source

Atmospheric Consequences of Cosmic Ray Variability in the Extragalactic Shock Model II: Revised ionization levels and their consequences

, 2010
It has been suggested that galactic shock asymmetry induced by our galaxy's infall toward the Virgo Cluster may be a source of periodicity in cosmic ray exposure as the solar system oscillates perpendicular to the galactic plane.
Adrian L. Melott, Aguirre, Alpen, Atri, Bancroft, Binney, Björn, Blaustein, Boucher, Brian C. Thomas, Cornette, Davidson, Dimitra Atri, Djemil, Ejzak, Foukal, Gehrels, Gies, Graham W. Wilson, Harfoot, Hatch, Häder, Jagger, Juckett, Juckett, Kiesecker, Lieberman, Lockwood, Madronich, McCallum, Medvedev, Melott, Melott, Melott, Melott, Melott, Michael J. Murray, Mikhail V. Medvedev, Natarajan, Overholt, Pukkala, Rohde, Ruderman, Scherer, Shaffer, Solanki, Svensmark, Tevini, Thomas, Thomas, Thomas   +50 more
core   +1 more source

Making the most of clade selection [PDF]

, 2017
Clade selection is unpopular with philosophers who otherwise accept multilevel selection theory. Clades cannot reproduce, and reproduction is widely thought necessary for evolution by natural selection, especially of complex adaptations.
Doolittle, W. Ford
core   +1 more source

Turning setbacks into stepping-stones for growth in conservation paleobiology

Frontiers in Ecology and Evolution
Conservation paleobiology is a cross-disciplinary field that utilizes the geohistorical record of past life on Earth to inform present-day decisions in conservation and restoration and assist in planning for future natural resource management.
G. Lynn Wingard, Chris L. Schneider, Gregory P. Dietl, Gregory P. Dietl, Damien A. Fordham   +4 more
doaj   +1 more source

Speleothem and biofilm formation in a granite/dolerite cave, Northern Sweden

International Journal of Speleology, 2014
Tjuv-Antes grotta (Tjuv-Ante's Cave) located in northern Sweden is a round-abraded sea cave ('tunnel cave'), about 30 m in length, formed by rock-water abrasion in a dolerite dyke in granite gneiss. Abundant speleothems are restricted to the inner, mafic
Therese Sallstedt, Magnus Ivarsson, Johannes Lundberg, Rabbe Sjöberg, Juan Ramón Vidal Romaní   +4 more
doaj   +1 more source

CT-Informed Skull Osteology of Palaeolagus haydeni (Mammalia: Lagomorpha) and Its Bearing on the Reconstruction of the Early Lagomorph Body Plan

Frontiers in Ecology and Evolution, 2021
Lagomorpha is a clade of herbivorous mammals nested within Euarchontoglires, one of the major placental groups represented today. It comprises two extant families with markedly different body plans: the long-eared and long-limbed Leporidae (hares and ...
Andrzej S. Wolniewicz, Łucja Fostowicz-Frelik, Łucja Fostowicz-Frelik, Łucja Fostowicz-Frelik   +3 more
doaj   +1 more source

Inter‐microscope comparability of dental microwear texture data obtained from different optical profilometers: Part I Reproducibility of diet inference using different instruments

The Anatomical Record, EarlyView.
Abstract Dental microwear texture analysis (DMTA) has become a well‐established method for dietary inference and reconstruction in both extant and extinct mammals and other tetrapods. As the volume of available data continues to grow, researchers could benefit from combining published data from various studies to perform meta‐analyses.
Daniela E. Winkler, Mugino O. Kubo
wiley   +1 more source

Sharpening our understanding of saber‐tooth biomechanics

The Anatomical Record, EarlyView.
Abstract Saber‐teeth are a striking example of convergent evolution in vertebrate predators, having evolved multiple times in mammals and their early ancestors. While there is broad consensus that saber‐toothed taxa employed a distinct biting strategy compared to conical‐toothed carnivores, like the lion, the precise mechanics and variability of this ...
Tahlia Pollock, Philip S. L. Anderson
wiley   +1 more source

Molecular and fossil evidence place the origin of cichlid fishes long after Gondwanan rifting. [PDF]

, 2013
Cichlid fishes are a key model system in the study of adaptive radiation, speciation and evolutionary developmental biology. More than 1600 cichlid species inhabit freshwater and marginal marine environments across several southern landmasses.
Alex Dornburg, Benjamin P. Keck, C. Darrin Hulsey, Christopher H. Martin, Matt Friedman, Matt Friedman, Peter C. Wainwright, Ron I. Eytan, Thomas J. Near, Thomas J. Near   +9 more
core   +1 more source