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 newest study on the most exciting teams of reptiles. a mixture of centred and evaluation papers bargains with quite a few facets of the evolutionary background of turtles, together with embryonic improvement, origins, early diversification, phylogenetic relationships, and biogeography. additionally it contains reviews on vital yet poorly understood fossil turtle assemblages, presents ancient views on turtle learn, and records disorder and edition in turtles. With its wide scope, such as descriptions of fabric and new taxa from Australia, Asia, and Europe, in addition to North and South the United States, this paintings may be a necessary source for somebody 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 sphere and a ‘must have’ for all vertebrate paleontologists.”, James F. Parham, California kingdom collage, CA, united states “A complete and sweeping evaluation of turtle evolution through the pinnacle specialists within the box that may curiosity every person interested in those detailed reptiles.” Jason S. Anderson, collage of Calgary, Canada “An useful addition to the literature that covers the total spectrum of methods towards realizing the evolution of those noble creatures.” Ann C. Burke, Wesleyan college, CT , united states “A really entire quantity that either the scholar of fossil turtles, in addition to the overall 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
In fact, it is certain from embryonic studies of modern turtles and knowledge of the plastron gained from the oldest known turtle, Odontochelys (Li et al. 2008), that much of the turtle plastron is formed from gastralia, in addition to the dermal bones of the shoulder girdle, the clavicular blades, and the interclavicle. Among the Parareptilia, neither the procolophonoids nor the pareiasaurs possess any significant synapomorphies that link them to turtles. The procolophoids lack any evidence of a carapace R.
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’. More specifically, chelonians were found to be a sister group of the Sauropterygia, a group that includes the marine Triassic placodonts and the living Lepidosauriformes, including lizards and snakes.
2005) Proganochelys, the carapace is solidly linked to the plastron by a bony bridge. Nothing of this nature occurs in other tetrapod groups. The exceptional configuration of the carapace, particularly the position of the ribs, occurs in relationship to patterns of ontogenetic development that are seen in no other vertebrates. It is based on a unique embryonic feature, the carapacial ridge (CR) extending anteroposteriorly above the bases of the pectoral and pelvic limbs (Fig. 8). This ridge is a unique raised area composed of mesenchyme of the dermis and the overlying ectoderm that forms dorsal to the boundary between the somitic (dorsal) and lateral plate mesoderm.
Morphology and Evolution of Turtles by Robert L. Carroll (auth.), Donald B. Brinkman, Patricia A. Holroyd, James D. Gardner (eds.)