Coming Onto the Land - An article from Discover Magazine describing the discovery of Acanthostega gunnari, an animal that helped revolutionize paleontologists view of tetrapod evolution.
Acanthostega gunnari - A detailed analysis of this early tetrapod by the paleontologist who discovered and described it.
Fish With Fingers - A description of Ted Daeschler and Neil Shubin's discovery of a transitional fish-tetrapod animal.
Ichthyostega - A detailed description of the first Devonian tetrapod to be discovered.
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.
Out of the Swamps - A description of Casineria, an early tetrapod from Scotland, from Science News Online.
Vertebrate Evolution - Land - A discussion of the required evolutionary adaptations for moving from aquatic life to terrestrial.
Romer's Gap - An abstract of a paper by Michael I. Coates and Jennifer A. Clack on early tetrapod evolution.
The Origin of Tetrapods and Temnospondyls - Lecture notes from the Major Features of Vertebrate Evolution class at the University of Toronto.
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.
Acanthostega - Information from the American Museum of Natural History, with several reconstructions.
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.
Basal Tetrapod and Amphibian Trees - A list of cladograms tested for their correspondence with stratigraphic data, with references.
Terrestrial Vertebrates - A description of the tetrapods and other digit bearing vertebrates.
Evolution of Limbs - A description of the possible effects of the Hox gene family on vertebrate evolution.
Eucritta melanolimnetes - Science update from the journal Nature on an early Carboniferous tetrapod, the name of which translates as "Creature from the Black Lagoon".
Phylogeny of Stegocephalians - Cladistic diagrams, illustrations and references.
Ancient Amphibians Discovered in Iowa - Description of this Mississippian fossil site.
Dendrerpeton acadianum - An early temnospondyl found in petrified tree stumps from Joggins, Nova Scotia.
Tetrapod Origins - An outline of tetrapod evolution.
