| Directory > Science > Earth Sciences > Paleontology > Vertebrates > Early Tetrapods Vertebrate Evolution - Land
A discussion of the required evolutionary adaptations for moving from aquatic life to terrestrial.
http://www.bio.miami.edu/tom/bil160/bil160goods/20_verts2.html
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Neil and Ted's Excellent Adventure
An article describing paleontologists Neil Shubin and Ted Daeschler and their search for early
tetrapods, from Philadelphia Citypaper.net.
http://www.citypaper.net/articles/070199/feat.covstory1.shtml
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Terrestrial Vertebrates
A description of the tetrapods and other digit bearing vertebrates.
http://tolweb.org/tree?group=Terrestrial_Vertebrates&contgroup=Sarcopterygii
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Acanthostega gunnari
A detailed analysis of this early tetrapod by the paleontologist who discovered and described it.
http://tolweb.org/tree?group=Acanthostega&contgroup=Terrestrial_Vertebrates
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Ichthyostega
A detailed description of the first Devonian tetrapod to be discovered.
http://tolweb.org/tree?group=Ichthyostega&contgroup=Terrestrial_vertebrates
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Phylogeny of Stegocephalians
Cladistic diagrams, illustrations and references.
http://tolweb.org/tree/eukaryotes/animals/chordata/terres_vert_lichen/phylogeny.html
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Acanthostega
Information from the American Museum of Natural History, with several reconstructions.
http://www.amnh.org/home/index.html
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Dendrerpeton acadianum
An early temnospondyl found in petrified tree stumps from Joggins, Nova Scotia.
http://www.ucmp.berkeley.edu/carboniferous/joggins.html
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Ancient Amphibians Discovered in Iowa
Description of this Mississippian fossil site.
http://www.igsb.uiowa.edu/browse/amphibs/amphibs.htm
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Eucritta melanolimnetes
Science update from the journal Nature on an early Carboniferous tetrapod, the name of which
translates as "Creature from the Black Lagoon".
http://helix.nature.com/nsu/980709/980709-3.html
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Evolution of Limbs
A description of the possible effects of the Hox gene family on vertebrate evolution.
http://www.gate.net/~rwms/EvoLimb.html
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Basal Tetrapod and Amphibian Trees
A list of cladograms tested for their correspondence with stratigraphic data, with references.
http://palaeo.gly.bris.ac.uk/cladestrat/amphibians.html
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First Footing
A article about the debate between paleontologists and geologists regarding the age of the Celsius
Bjerg Group, the fossil site where Ichthyostega and Acanthostega were discovered. From the journal
Nature.
http://helix.nature.com/nsu/990715/990715-5.html
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Central Pennsylvania Legacies: Fishing for History
An article, accompanying a public radio broadcast, describing the discovery of Hynerpeton bassetti
at the Red Hill fossil site. A Real Audio archive of the broadcast is included.
http://wpsu.psu.edu/Legacies/leg-feb24.html
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The Origin of Tetrapods and Temnospondyls
Lecture notes from the Major Features of Vertebrate Evolution class at the University of Toronto.
http://www.erin.utoronto.ca/~w3bio356/lectures/temno.html
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Romer's Gap
An abstract of a paper by Michael I. Coates and Jennifer A. Clack on early tetrapod evolution.
http://cimbad.mnhn.fr/publication/geodiv/g95n1a15.html
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Out of the Swamps
A description of Casineria, an early tetrapod from Scotland, from Science News Online.
http://www.sciencenews.org/sn_arc99/5_22_99/bob1.htm
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Fish With Fingers
A description of Ted Daeschler and Neil Shubin's discovery of a transitional fish-tetrapod animal.
http://sln.fi.edu/qa98/biology/journals/part14.html
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