Fossil biomolecules reveal an avian metabolism in the ancestral dinosaur.

  title={Fossil biomolecules reveal an avian metabolism in the ancestral dinosaur.},
  author={Jasmina Wiemann and Iris Men{\'e}ndez and Jason M. Crawford and Matteo Fabbri and Jacques A. Gauthier and Pincelli M. Hull and Mark A. Norell and Derek E. G. Briggs},
Birds and mammals independently evolved the highest metabolic rates among living animals1. Their metabolism generates heat that enables active thermoregulation1, shaping the ecological niches they can occupy and their adaptability to environmental change2. The metabolic performance of birds, which exceeds that of mammals, is thought to have evolved along their stem lineage3-10. However, there is no proxy that enables the direct reconstruction of metabolic rates from fossils. Here we use in situ… 

Using Macro- and Microscale Preservation in Vertebrate Fossils as Predictors for Molecular Preservation in Fluvial Environments

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Comparing the neurocognitively least derived extant birds – palaeognaths – with the closest living relatives of birds, the crocodylians suggests that visual perspective taking originated in early birds or non-avian dinosaurs – likely earlier than in mammals.

Dinosaurs weren't so cool

  • M. Country
  • Education
    Journal of Experimental Biology
  • 2022



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