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The balance of evidence favors a monophyletic origin of all lissamphibians from within the tem- nospondyls but the number of character states involved is not so great that this theory can be considered robust.
The turtles of the Purbeck Limestone Group of Dorset, southern England
The turtles from the Purbeck Limestone are revised and it is concluded that there are four shell‐based cryptodire species present, namely Pleurosternon bullockii, ‘Glyptops’typocardium comb. nov.,
New Basal Iguanodonts from the Cedar Mountain Formation of Utah and the Evolution of Thumb-Spiked Dinosaurs
Iguanacolossus and Hippodraco add greatly to the knowledge of North American basal iguanodonts and prompt a new comprehensive phylogenetic analysis of basal iguanaodont relationships.
A discoglossid frog from the Middle Jurassic of England
A discoglossid frog, Eodiscoglossus oxoniensis sp. nov. is described from the Upper Bathonian Forest Marble of Oxfordshire. It closely resembles Eodiscoglossus santonjae from the Jurassic-Cretaceous
Purbeck–Wealden (early Cretaceous) climates
Morphology and systematics of the Pennsylvanian amphibian Platyrhinops lyelli (Amphibia: Temnospondyli)
  • J. Clack, A. Milner
  • Environmental Science, Biology
    Earth and Environmental Science Transactions of…
  • 1 September 2009
The morphology of the amphibamid temnospondyl amphibian Platyrhinops lyelli from the Middle Pennsylvanian of Linton, Ohio is reassessed from previously described and undescribed specimens and shows the presence of bicuspid marginal teeth, anteriorly widened frontals, elongate choanae, a broad rhomboidal sphenethmoid and a pair of flattened blade-like ceratohyals.
The Cretaceous-Tertiary biotic transition
Mass extinctions are recognized through the study of fossil groups across event horizons, and from analyses of long-term trends in taxonomic richness and diversity. Both approaches have inherent
The temnospondyl amphibians from the Viséan of East Kirkton, West Lothian, Scotland
A new temnospondyl ampbibian Balanerpeton woodi gen. et sp. nov. is represented by over 30 complete or partial skeletons from the Visean limestones, shales and tuffs in East Kirkton Quarry, Bathgate,