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Showing 1–17 of 17 results
Advanced filters: Author: Jennifer A. Clack Clear advanced filters

  • Romer’s Gap describes the period with few known fossils when early tetrapods were becoming increasingly terrestrial. Here, five new species, three stem tetrapods and two stem amphibians, are described from a location in Scotland shedding light on the phylogeny and environment of this period.

    • Jennifer A. Clack
    • Carys E. Bennett
    • Stig A. Walsh
    Research
    Nature Ecology & Evolution
    Volume: 1, P: 1-11

  • The transition from water to land during the late Devonian is marked by the early tetrapods Ichthyostega and Acanthostega, and the tetrapod-like fish Tiktaalik. An analysis of recently discovered material shows that Ventastega curonica might be seen as a simple intermediate between the Tiktaalik and Acanthostega. However, the picture is more complicated than this due to the unexpected morphological diversity of early tetrapods.

    • Per E. Ahlberg
    • Jennifer A. Clack
    • Ivars Zupiņš
    Research
    Nature
    Volume: 453, P: 1199-1204

  • Analysis of humeri from fossils that span the fin-to-limb transition reveal that the change in the humerus shape is driven by both ecology and phylogeny, and is associated with functional trade-offs related to locomotor performance.

    • Blake V. Dickson
    • Jennifer A. Clack
    • Stephanie E. Pierce
    Research
    Nature
    Volume: 589, P: 242-245

  • A study of the African lungfish reveals that it has a rudimentary ability to detect pressure waves caused by sound. The finding expands our knowledge of how hearing evolved in early tetrapods, the first vertebrates to have limbs and digits.

    • Jennifer A. Clack
    News & Views
    Nature
    Volume: 519, P: 168-169

  • Three-dimensional reconstruction and modelling of limb joint mobility in the early tetrapod Ichthyostega is used to provide insights into an important step in vertebrate evolution—the transition from swimming to walking.

    • Stephanie E. Pierce
    • Jennifer A. Clack
    • John R. Hutchinson
    Research
    Nature
    Volume: 486, P: 523-526

  • X-ray synchrotron microtomography has revealed the three-dimensional vertebral architecture of Ichthyostega, and other crucial and celebrated early tetrapods; a surprising feature is the relationship between the vertebral elements, with the pleurocentra unexpectedly attached to the succeeding intercentrum, suggesting a ‘reverse’ rhachitomous design.

    • Stephanie E. Pierce
    • Per E. Ahlberg
    • Jennifer A. Clack
    Research
    Nature
    Volume: 494, P: 226-229

  • Three-dimensionally preserved fossils of Parmastega aelidae, a newly described tetrapod from the earliest Famennian (Late Devonian) of Russia, provide detailed insights into the morphology and palaeobiology of the earliest tetrapods.

    • Pavel A. Beznosov
    • Jennifer A. Clack
    • Per Erik Ahlberg
    Research
    Nature
    Volume: 574, P: 527-531

  • A project designed to discover fossils that illuminate the transition between fishes and land vertebrates has delivered the goods. At a stroke, our picture of that transition is greatly improved.

    • Per Erik Ahlberg
    • Jennifer A. Clack
    News & Views
    Nature
    Volume: 440, P: 748-749

    • Jennifer Clack
    Books & Arts
    Nature
    Volume: 438, P: 163-165