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Volume 543 Issue 7646, 23 March 2017

The cover shows an artists impression of the ornithischian dinosaur Kulindadromeus looking up at a falling asymmetrical flight feather from the Archaeopterygidae family. Such feathers are known only in theropods, but if the hypothesis of dinosaur relations set out by Matthew Baron and colleagues in this issue is confirmed, this distinction will have to be revisited. Baron and his co-workers suggest that the accepted division of dinosaurs into two groupsthe Saurischia and the Ornithschianeeds to be redrawn. The Saurischia includes carnivorous theropods such as Tyrannosaurus rex, and the giant sauropods such as Diplodocus; whereas the Ornithschia includes ornithopods such as Iguanodon, and armoured dinosaurs such as Triceratops and Stegosaurus. Baron and colleagues challenge this grouping based on early ornithischians and suggest that sauropods should be grouped with the early, carnivorous herrerasaurs, but that ornithischians should be grouped with theropods.

Editorial

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World View

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Research Highlights

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Seven Days

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News

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Correction

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News Feature

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Comment

  • An investigation finds that dozens of academic titles offered 'Dr Fraud' — a sham, unqualified scientist — a place on their editorial board. Katarzyna Pisanski and colleagues report.

    • Piotr Sorokowski
    • Emanuel Kulczycki
    • Katarzyna Pisanski
    Comment
  • A global network of cap-and-trade systems would deliver greater complexity and fewer emissions cuts, warns Jessica F. Green.

    • Jessica F. Green
    Comment
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Books & Arts

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Correspondence

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Obituary

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News & Views

  • The standard dinosaur evolutionary tree has two key branches: the 'bird-hipped' Ornithischia and the 'reptile-hipped' Saurischia. A revised tree challenges many ideas about the relationships between dinosaur groups. See Article p.501

    • Kevin Padian
    News & Views
  • Genome sequencing of Mycobacterium abscessus strains that infect the lungs suggests a possible shift in the bacterium's mode of infection from environmental acquisition to human transmission. This finding has clinical implications.

    • Michael Strong
    • Rebecca M. Davidson
    News & Views
  • The vibrational excitations of nanostructures have been mapped using state-of-the-art electron microscopy. The results improve our understanding of these excitations, which will aid the design of nanostructures. See Letter p.529

    • Christian Colliex
    News & Views
  • A study showing the effects of land-use quality on the productivity of bumblebee colonies highlights the importance of resource availability across space and time in promoting survival over generations. See Letter p.547

    • Jeffrey D. Lozier
    News & Views
  • Antiretroviral therapy can keep HIV at bay, but a few cells remain infected, so the disease cannot be cured. The discovery of a protein that marks out these infected cells will facilitate crucial studies of this latent viral reservoir. See Letter p.564

    • Douglas D. Richman
    News & Views
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Article

  • Analysis of a wide range of dinosaurs and dinosauromorphs recovers a sister-taxon relationship between Ornithischia and Theropoda, calling for the redefinition of all the major clades within Dinosauria and the revival of the clade Ornithoscelida.

    • Matthew G. Baron
    • David B. Norman
    • Paul M. Barrett
    Article
  • Increasing expression of the autism-associated gene Ube3a, either alone or in combination with seizures, not only impairs sociability in mice but also reduces expression of the synaptic organizer Cbln1 in the ventral tegmental area, thus weakening glutamatergic transmission.

    • Vaishnav Krishnan
    • David C. Stoppel
    • Matthew P. Anderson
    Article
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Letter

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Feature

  • Conflicts of interest can send a researcher's reputation crashing — but resolving them needn't be as burdensome as it seems.

    • Jeffrey M. Perkel
    Feature
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Q&A

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Futures

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Outline

  • The concept of computers that harness the laws of quantum mechanics has transformed our thinking about how information can be processed. Now the environment exists to make prototype devices a reality.

    • Andreas Trabesinger

    Nature Outline:

    Outline
  • The promises of quantum computation are unique — and so are the challenges. Progress in physics, mathematics, computer science and engineering have brought quantum computers to a point where they start to challenge their classical counterparts. By Andreas Trabesinger; illustration by Visual Science.

    • Andreas Trabesinger

    Nature Outline:

    Outline
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