590 results found
    1. Evolutionary Biology

    Preservation of three-dimensional anatomy in phosphatized fossil arthropods enriches evolutionary inference

    Achim H Schwermann, Tomy dos Santos Rolo ... Thomas van de Kamp
    X-ray imaging reveals well-preserved internal characters in mineralized arthropods from the Paleogene, urging the reexamination of previously neglected fossil collections.
    1. Evolutionary Biology

    A Bayesian approach to dynamic homology of morphological characters and the ancestral phenotype of jawed vertebrates

    Benedict King, Martin Rücklin
    The ancestor of all known jawed vertebrates possessed a maxilla and premaxilla and was similar in morphology to the 'maxillate placoderms' from China.
    1. Evolutionary Biology

    A Permian fish reveals widespread distribution of neopterygian-like jaw suspension

    Thodoris Argyriou, Sam Giles, Matt Friedman
    μCT-aided study illuminates the cranial endoskeleton and interrelationships of the Permian actinopterygian †Brachydegma, which is now excluded from crown neopterygians despite exhibiting a double jaw joint.
    1. Evolutionary Biology

    A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany

    Oliver WM Rauhut, Helmut Tischlinger, Christian Foth
    A new taxon from the Late Jurassic of southern Germany represents the second volant bird known from that time period and documents the improvement of flapping flight in bird evolution.
    1. Evolutionary Biology

    An armoured marine reptile from the Early Triassic of South China and its phylogenetic and evolutionary implications

    Andrzej S Wolniewicz, Yuefeng Shen ... Jun Liu
    A new fossil sheds light on the evolution of an aquatic lifestyle in extinct reptiles and supports a close phylogenetic relationship between archosaurs (crocodiles, dinosaurs, birds, and kin) and turtles.
    1. Ecology
    2. Evolutionary Biology

    Evolution of thorax architecture in ant castes highlights trade-off between flight and ground behaviors

    Roberto A Keller, Christian Peeters, Patrícia Beldade
    Body shape and behavioural specializations found across the castes of ant species evolved together and reflect different abilities for ground behaviors.
    1. Neuroscience

    Value signals guide abstraction during learning

    Aurelio Cortese, Asuka Yamamoto ... Benedetto De Martino
    Valuation of sensory information in the ventromedial prefrontal cortex plays a key function in constructing the abstract representations that guide complex behaviours.
    1. Evolutionary Biology

    Neurocranial anatomy of an enigmatic Early Devonian fish sheds light on early osteichthyan evolution

    Alice M Clement, Benedict King ... John A Long
    Stunning new scan data of an enigmatic fish from the Early Devonian of Australia, Ligulalepis, is identified as a stem osteichthyan, specifically, as the sister taxon to the 'psarolepids' plus crown osteichthyans.
    1. Computational and Systems Biology
    2. Neuroscience

    Neuroimaging and behavioral evidence that violent video games exert no negative effect on human empathy for pain and emotional reactivity to violence

    Lukas Leopold Lengersdorff, Isabella C Wagner ... Claus Lamm
    After playing violent video games for 7 hr over the course of 2 weeks, human male participants show neither signs of decreased empathy for the pain of another person nor of decreased responsivity to violent images.
    1. Evolutionary Biology

    A multispecies coalescent model for quantitative traits

    Fábio K Mendes, Jesualdo A Fuentes-González ... Matthew W Hahn
    A model for evolutionary inferences at both micro- and macroevolutionary scales is proposed and evaluated theoretically and through simulations.

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