Ever Since Owen: Changing Perspectives on the Early Evolution of Tetrapods

@article{Coates2008EverSO,
  title={Ever Since Owen: Changing Perspectives on the Early Evolution of Tetrapods},
  author={Michael I. Coates and Marcello Ruta and Matt Friedman},
  journal={Annual Review of Ecology, Evolution, and Systematics},
  year={2008},
  volume={39},
  pages={571-592}
}
  • M. Coates, M. Ruta, M. Friedman
  • Published 31 October 2008
  • Environmental Science, Geography
  • Annual Review of Ecology, Evolution, and Systematics
The traditional notion of a gap between fishes and amphibians has been closed by a wealth of fish-like fossil tetrapods, many discovered since the mid 1980s. This review summarizes these discoveries and explores their significance relative to changing ideas about early tetrapod phylogeny, biogeography, and ecology. Research emphasis can now shift to broader-based questions, including the whole of the early tetrapod radiation, from the divergence from other lobed-finned fishes to the origins of… 

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References

SHOWING 1-10 OF 122 REFERENCES
An exceptional Devonian fish from Australia sheds light on tetrapod origins
TLDR
New observations from the most complete, acid-prepared Devonian tetrapodomorph fish yet discovered, Gogonasus are presented, which was previously placed just crownward of Kenichthys and rhizodontids, the most primitive taxa on the tetrapOD lineage.
Devonian climate change, breathing, and the origin of the tetrapod stem group.
  • J. Clack
  • Environmental Science, Geography
    Integrative and comparative biology
  • 2007
TLDR
The diversification of the tetrapod stem group occurred during the late Middle through the Late Devonian, that is from the Givetian to Famennian stages about 385-365 million years ago, and plant diversification was at its most rapid, changing the character of the landscape and contributing, via soils, soluble nutrients, and decaying plant matter, to anoxia in all water systems.
An amniote-like skeleton from the Early Carboniferous of Scotland
TLDR
A small, highly ossified, postcranial skeleton of a terrestrially adapted, amniote-like tetrapod from the Mid Viséan is reported, which shows the earliest known pentadactyl manus and pushes back the known occurrence of terrestrial vertebrates closer to the origin of tetrapods.
A Devonian tetrapod-like fish and the evolution of the tetrapod body plan
TLDR
The discovery of a well-preserved species of fossil sarcopterygian fish from the Late Devonian of Arctic Canada that represents an intermediate between fish with fins and tetrapods with limbs, and provides unique insights into how and in what order important tetrapod characters arose is reported.
Osteolepiforms and the ancestry of tetrapods
TLDR
The supposedly discredited idea of osteolepiforms as tetrapod ancestors is supported by the first detailed analysis of the lower part of the Tetrapodomorpha, based on 99 characters scored for 29 taxa.
The biostratigraphical and palaeogeographical framework of the earliest diversification of tetrapods (Late Devonian)
Abstract The earliest diversification of tetrapods is dated as Late Devonian based on 10 localities worldwide that have yielded bone remains. At least 18 different species are known from these
Ventastega curonica and the origin of tetrapod morphology
TLDR
The skull, exceptionally preserved braincase, shoulder girdle and partial pelvis of Ventastega curonica are presented, a transitional intermediate form between the ‘elpistostegids’ Panderichthys and Tiktaalik and the Devonian tetrapods (limbed vertebrates) Acanthostega and Ichthyostega.
A near‐tetrapod from the Baltic Middle Devonian
TLDR
Livoniana has a strikingly autapomorphic dentary dentition comprising multiple tooth rows, providing evidence both for the unexpectedly early evolution of tetrapod characteristics and for morphological radiation around the fish‐tetrapod transition.
Evolutionary patterns in early tetrapods. II. Differing constraints on available character space among clades
TLDR
This work modify techniques similar to those used by ecologists to infer species richnesses to estimate the number of potentially varying characters given the distributions of changes implied by a model phylogeny, and shows that stem lissamphibians and stem amniotes both had restrictions on some parts of character space but also invaded new character space that had been unavailable to stem tetrapods.
Palaeontology: First Devonian tetrapod from Asia
TLDR
The discovery of the first Devonian tetrapod from Asia is reported, a finding that substantially extends the geographical range of these animals and raises new questions about their dispersal.
...
...