By Robert L. Carroll (auth.), Donald B. Brinkman, Patricia A. Holroyd, James D. Gardner (eds.)
This quantity celebrates the contributions of Dr. Eugene Gaffney to the learn of turtles, via a various and complementary number of papers that showcases the most recent learn on essentially the most fascinating teams of reptiles. a mixture of concentrated and overview papers bargains with a variety of elements of the evolutionary background of turtles, together with embryonic improvement, origins, early diversification, phylogenetic relationships, and biogeography. furthermore it comprises reviews on very important yet poorly understood fossil turtle assemblages, offers old views on turtle examine, and files illness and version in turtles. With its large scope, which include descriptions of fabric and new taxa from Australia, Asia, and Europe, in addition to North and South the USA, this paintings should be a vital source for an individual drawn to the morphology and evolution of turtles. “This volume’s breadth of time, geography, and taxonomic insurance makes it an important contribution to the sector and a ‘must have’ for all vertebrate paleontologists.”, James F. Parham, California kingdom collage, CA, united states “A accomplished and sweeping review of turtle evolution by way of the head specialists within the box that would curiosity all people keen on those specified reptiles.” Jason S. Anderson, collage of Calgary, Canada “An worthy addition to the literature that covers the complete spectrum of methods towards realizing the evolution of those noble creatures.” Ann C. Burke, Wesleyan college, CT , united states “A actually complete quantity that either the coed of fossil turtles, in addition to the final reader attracted to those enigmatic creatures, will locate fascinating.” Tyler Lyson, Yale college, CT, USA
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Additional resources for Morphology and Evolution of Turtles
2007), suggesting that both clades are equally plausible as the sister taxon of turtles, using the criteria of timing of first occurrences. This, however, is not sufficient to establish the probability of either group having been the phylogenetic antecedent of turtles. Organogenesis of Living Tetrapods as a Means of Establishing Chelonian Relationships Another approach to establishing the ancestry of turtles was that of a recent study by Werneburg and Sanchez-Villagre (2009), which considered the relative timing of organogenesis among the major clades of reptiles (Aves, Crocodylia, Sphenodontia, and Squamata) based on a standard reference series of embryological events in amniotes.
They also contribute to vertebral and rib cartilages. In no other terrestrial vertebrates are neural crest cells known to be capable of forming bone in the trunk region. This may be related to the expression or lack of expression of Hox genes. It was postulated by Cebra-Thomas et al.
The final conclusions drawn from deBraga and Rieppel’s (1997) phylogenetic analysis were that Testudines may well be related to diapsids, indeed they may be nested within R. L. 1 Number of autapomorphies of selected taxa from de Braga and Rieppel (1997) Taxon Parareptilia Autapomorphies 6 Procolophoniformes 12 Pareiasauria 26 Anthodon 4 Owenettidae 4 Eureptilia (anapsids ? diapsids) 5 Diapsida 7 Eosuchia 22 Lepidosauromorpha 15 Lepidosauriformes 3 Turtles ? Sauropterygia 10 Testudines 41 Sauropterygia 11 Placodus 18 Archosauromorpha 7 crown-group diapsids rather than within ‘parareptiles’.