50 results found
    1. Evolutionary Biology
    2. Plant Biology

    An evidence-based 3D reconstruction of Asteroxylon mackiei, the most complex plant preserved from the Rhynie chert

    Alexander J Hetherington et al.
    The body plan of the 407-million-year-old plant fossil Asteroxylon mackiei comprised three developmentally distinct systems of axes.
    1. Evolutionary Biology

    Contingency and chance erase necessity in the experimental evolution of ancestral proteins

    Victoria Cochran Xie et al.
    Replicating experimental evolution from ancestral proteins shows that historical contingency steadily overwhelms chance and necessity as the primary cause of evolutionary variation in molecular sequences on long phylogenetic timescales.
    1. Evolutionary Biology

    A new Heterodontosaurus specimen elucidates the unique ventilatory macroevolution of ornithischian dinosaurs

    Viktor J Radermacher et al.
    A new specimen of Heterodontosaurus elucidates how ornithischian dinosaurs evolved a body plan substantially different from that of other dinosaurs and what these differences meant for their breathing.
    1. Evolutionary Biology

    Novel neuroanatomical integration and scaling define avian brain shape evolution and development

    Akinobu Watanabe et al.
    More integrated brains in crown birds evolved through a mosaic assembly of new evolutionary and developmental dynamics across neuroanatomical regions that occurred along the dinosaur-bird transition.
    1. Evolutionary Biology
    2. Neuroscience

    Connectional asymmetry of the inferior parietal lobule shapes hemispheric specialization in humans, chimpanzees, and rhesus macaques

    Luqi Cheng et al.
    Humans showed the most widespread asymmetric connectivity between the inferior parietal lobule subregions and the rest of the brain compared to macaques and chimpanzees, which shapes hemispheric specialization in primates.
    1. Evolutionary Biology

    Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis

    Anjali M Prabhat et al.
    The human-like joint proportions of Australopithecus afarensis evolved independently, making 'Lucy' and her kind the earliest known evolutionary experiment in obligate bipedalism.
    1. Ecology

    Relative demographic susceptibility does not explain the extinction chronology of Sahul’s megafauna

    Corey JA Bradshaw et al.
    There is no relationship between the demographic susceptibility to extinction and the estimated extinction chronology among Sahul’s megafauna, suggesting that human choices, a species’ ecological requirements, and/or random climate variation instead determined the extinction chronology.
    1. Evolutionary Biology

    Preliminary paleohistological observations of the StW 573 (‘Little Foot’) skull

    Amélie Beaudet et al.
    Virtual investigation of the 3.67-million-year-old skull of 'Little Foot' using synchrotron radiation reveals histological details of Australopithecus dental and bone tissues.
    1. Evolutionary Biology

    The developmental relationship between teeth and dermal odontodes in the most primitive bony fish Lophosteus

    Donglei Chen et al.
    Teeth and dermal odontodes diverge from the same set of founder odontodes, demonstrating they are modified subsets of the same system, and both oral and dermal epithelial have patterning capacity.
    1. Neuroscience

    Chimpanzee brain morphometry utilizing standardized MRI preprocessing and macroanatomical annotations

    Sam Vickery et al.
    Openly available structural imaging processing pipeline for chimpanzees including registration templates and macro-anatomical parcellation shows human-like cerebral aging and medial hemispheric organization.

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