41 results found
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Cretaceous dinosaur bone contains recent organic material and provides an environment conducive to microbial communities

    Evan T Saitta et al.
    Subterranean fossil bone hosts a living microbiome different from the surrounding sediment without evidence of original protein preservation.
    1. Evolutionary Biology

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

    Achim H Schwermann et al.
    X-ray imaging reveals well-preserved internal characters in mineralized arthropods from the Paleogene, urging the reexamination of previously neglected fossil collections.
    1. Genetics and Genomics

    A new genus of horse from Pleistocene North America

    Peter D Heintzman et al.
    The extinct stilt-legged equids of North America are not related to Asiatic asses or horses, but instead represent a distinct lineage outside of living equid diversity that became extinct in the terminal Pleistocene.
    1. Evolutionary Biology

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

    Oliver WM Rauhut et al.
    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

    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. Ecology
    2. Evolutionary Biology

    Extreme adaptations for aquatic ectoparasitism in a Jurassic fly larva

    Jun Chen et al.
    Well-preserved fossils reveal an extreme morphological specialization of fly larvae, and broaden our understanding of the diversity of ectoparasitism in Mesozoic insects.
    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

    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. Ecology

    First bone-cracking dog coprolites provide new insight into bone consumption in Borophagus and their unique ecological niche

    Xiaoming Wang et al.
    Fossilized feces (coprolites) of extinct bone-crushing dogs, Borophagus parvus, from late Miocene (6 million years ago) of California demonstrates consumption and preservation of bones in digestive tracts and potential social hunting behavior by these predators.
    1. Ecology
    2. Evolutionary Biology

    Brood care in a 100-million-year-old scale insect

    Bo Wang et al.
    The discovery of the earliest direct evidence of brood care in insects demonstrates a remarkably conserved egg-brooding reproductive strategy within scale insects in stasis for nearly 100 million years.

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