The origin and early diversification of tetrapods

@article{Ahlberg1994TheOA,
  title={The origin and early diversification of tetrapods},
  author={Per Erik Ahlberg and Andrew R C Milner},
  journal={Nature},
  year={1994},
  volume={368},
  pages={507-514}
}
A series of new fossil discoveries, coupled with cladistic analysis of old and new data, is beginning to resolve the origin of tetrapods into a documented sequence of character acquisition. Devonian tetrapods were more fish-like than believed previously, whereas Lower Carboniferous tetrapod faunas contain early representatives of the amphibian and amniote lineages. These very different assemblages are separated by a 20-million-year Tournaisian gap' which has yielded very few tetrapod fossils. 
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207 Citations
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207 Citations

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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.
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A tetrapod jaw of about 365 million years old from the Famennian of Belgium is described, which is the first from western continental Europe and provides information about the conditions that prevailed just before the virtual disappearance of tetrapods from the fossil record for 20 Myr.
Early tetrapod evolution.
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Early Carboniferous tetrapods in Australia
TLDR
The Drummond basin fauna indicates that several major groups of tetrapods were distributed worldwide through equatorial regions during the Early Carboniferous, and represents groups previously confined to Europe and North America.
Bones, molecules, and crown- tetrapod origins
The timing of major events in the evolutionary history of early tetrapods is discussed in the light of a new cladistic analysis. The phylogenetic implications of this are compared with those of the…
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.
Ontogenetic evidence for the Paleozoic ancestry of salamanders
TLDR
Comparison of patterns of larval development in Paleozoic and modern amphibians provides a means to test previous phylogenies based primarily on adult characteristics and proves to be highly informative in the case of the origin of salamanders.
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