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Showing 1–9 of 9 results
Advanced filters: Author: Jasmina Wiemann Clear advanced filters

  • Recent studies have reported preservation of proteinaceous soft tissues within dinosaur bones. Here, Wiemann et al. combine analyses of fossil vertebrate tissues and experimentally matured modern samples to elucidate the mechanism of soft tissue preservation and the environments that favor it.

    • Jasmina Wiemann
    • Matteo Fabbri
    • Derek E. G. Briggs
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9

  • Molecular analyses of newly discovered, embryo-bearing ornithischian and sauropod dinosaur eggs suggest that the ancestral dinosaur egg was soft-shelled, and that hard-shelled eggs evolved independently at least three times in the major dinosaur lineages.

    • Mark A. Norell
    • Jasmina Wiemann
    • Darla K. Zelenitsky
    Research
    Nature
    Volume: 583, P: 406-410

  • Molecular analyses of modern and fossil skeletal samples reveal that elevated metabolic rates consistent with endothermy evolved independently in mammals and plesiosaurs, and ornithodirans: Exceptional metabolic rates are ancestral to dinosaurs and pterosaurs and were acquired before energetically costly adaptations, such as flight.

    • Jasmina Wiemann
    • Iris Menéndez
    • Derek E. G. Briggs
    Research
    Nature
    Volume: 606, P: 522-526

  • A phylogenetic assessment based on Raman microspectroscopy of pigment traces in fossilized eggshells from all major dinosaur clades reveals that eggshell coloration and pigment pattern originated in nonavian theropod dinosaurs.

    • Jasmina Wiemann
    • Tzu-Ruei Yang
    • Mark A. Norell
    Research
    Nature
    Volume: 563, P: 555-558

  • Discovery that the giant theropod dinosaur Spinosaurus has a large flexible tail indicates that it was primarily aquatic and swam in a similar manner to extant tail-propelled aquatic vertebrates.

    • Nizar Ibrahim
    • Simone Maganuco
    • Stephanie E. Pierce
    Research
    Nature
    Volume: 581, P: 67-70