Download or read book Phylogenetic Relationships Among Gerrhonotine Lizards written by David A. Good and published by Univ of California Press. This book was released on 1988-01-01 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study the author analyzes the phylogenetic relationships among the genera and species of alligator lizards (Squamata: Anguidae: Gerrhonotinae). The subfamily consists of six monophyletic genera: Coloptychon, Gerrhonotus, Elgaria, Barisia, Mesaspis, and Abronia. The author reviews the history of gerrhonotine taxonomy, provides a key to, and diagnoses of, all gerrhonotine taxa, and discusses taxonomic and biogeographic implications of gerrhonotine relationships. In this study the author analyzes the phylogenetic relationships among the genera and species of alligator lizards (Squamata: Anguidae: Gerrhonotinae). The subfamily consists of six monophyletic genera: Coloptychon, Gerrhonotus, Elgaria, Barisia, Mesaspis, and Abronia. The author reviews the history of gerrhonotine taxonomy, provides a key to, and diagnoses of, all gerrhonotine taxa, and discusses taxonomic and biogeographic implications of gerrhonotine relationships.

Download or read book Lizards written by Eric R. Pianka and published by Univ of California Press. This book was released on 2003 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the diversity of lizards and their major adaptive features. The authors discuss the latest research findings and provide new hypotheses about lizard diversity.

Download or read book University of California Publications in Zoology written by and published by . This book was released on 2003 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Phylogeny of Anguinomorph Lizards written by RIEPPEL and published by Springer. This book was released on 2012-12-06 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Herpetology written by George R. Zug and published by Academic Press. This book was released on 2001-05-30 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a review of all the myriad aspects of the biology, ecology, evolution, physiology, and behavior of amphibians and reptiles. (Midwest).

Download or read book Journal of Vertebrate Paleontology written by and published by . This book was released on 2008 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reptiles written by Nicolae Sfetcu and published by Nicolae Sfetcu. This book was released on 2014-05-13 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today there are 6,800 reptile species on earth; the major groups are alligators and crocodiles, turtles, lizards, and snakes. Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane. Today they are represented by four surviving orders: crocodilia (crocodiles, caimans and alligators), sphenodontia (tuataras from New Zealand, squamata (lizards, snakes and amphisbaenids - "worm-lizards"), and testudines (turtles).

Download or read book Bulletin of the Museum of Comparative Zoology written by and published by . This book was released on 2010 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Reptile Ear written by Ernest Glen Wever and published by Princeton University Press. This book was released on 2019-01-29 with total page 1038 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this definitive work, Ernest Glen Wever establishes the evolutionary importance of the reptile ear as the origin of the higher type of auditory apparatus shared by man and the mammals. Tracing the development of the auditory receptor in the living reptiles, he examines the use of a variety of mechanisms and principles of action by that receptor. While some of the material in this book has appeared previously in journal articles, most of it is presented here for the first time. Basing this study on his twenty years of research at Princeton's Auditory Research Laboratories, Professor Wever treats in anatomical and functional detail the auditory mechanism in about 250 species and subspecies of reptiles. The anatomical treatment rests on dissections and histological examinations of the ears in serial section, and portrays the relevant features in drawings that represent particular views of reconstructions. The author evaluates the performance of thesse ears electrophysiologically, in terms of the electrical potentials of the cochlea, paying particular attention to problems of the transmission of vibrations inward to the cochlea and the actions there in stimulating the sensory cells. Professor Wever finds that the cochlea emerged independently from the non-auditory labyrinth in three different vertebrate groups: fishes, amphibians, and reptiles. It was among the reptiles, however, that the vertebrate ear took on a more advanced configuration from which it further evolved along separate lineages in the birds and mammals. Ernest Glen Wever is Eugene Higgins Professor of Psychology Emeritus at Princeton University. Originally published in 1978. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Download or read book Herpetology written by Laurie J. Vitt and published by Academic Press. This book was released on 2008-12-15 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: This third edition, now fully revised and updated by two of Dr. Zug's colleagues, provides herpetology students and amateur reptile and amphibian keepers with the latest taxonomy and species developments from around the world. Herpetology is a rapidly evolving field, which has contributed to new discoveries in many conceptual areas of biology. The authors build on this progress by updating all chapters with new literature, graphics, and discussions—many of which have changed our thinking.With a new emphasis placed on conservation issues, Herpetology continues to broaden the global coverage from earlier editions, recognizing the burgeoning reptile and amphibian research programs and the plight of many species in all countries and all biomes.New information on the remarkable advances in behavioral, physiological, and phylo-geographical data provide students with the current research they need to advance their education and better prepare their future in herpetology.

Download or read book Lizards of the World written by Mark O'Shea and published by Ivy Press. This book was released on 2021-03-23 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lizards of the World is ultimate book on these fascinating creatures, featuring the all the different types of lizard worldwide. As survivors from the time of the dinosaurs, lizards are scaly, cold-blooded, living fossils—relics from a prehistoric world that remain alive and well in ours. Lizards exert a morbid fascination, in many mythologies they are dark creatures, symbolizing death and misfortune. From chameleons and skinks to geckos and iguanas, Lizards of the World brings these creatures firmly into the light, to reveal their extraordinary diversity Found in almost every type of terrain globally, there are almost 6,500 species of lizard, including lizards with frills, horns, or wings, those that drop their tails, and others that squirt blood from their eyes. Here, the lizard family and subfamily profiles, organized phylogenetically, are illustrated with stunning photography. Each profile includes a population distribution map, a table of essential information, and a fascinating commentary revealing notable characteristics, fresh scientific understanding, and the diversity of species. Written by world-renowned herpetologist Mark O’Shea, Lizards of the World is a magnificent showcase of the natural history and beauty of these remarkable reptiles.

Download or read book Bulletin of the American Museum of Natural History written by Joel Asaph Allen and published by . This book was released on 2008 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprises articles on geology, paleontology, mammalogy, ornithology, entomology and anthropology.

Download or read book The Evolution of Viviparity and Matrotrophy in Vertebrates with Special Reference to Reptiles written by Daniel G. Blackburn and published by . This book was released on 1985 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contributions to Geology written by and published by . This book was released on 1982 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Systematic Position of Lanthanotus and the Affinities of the Anguinomorphan Lizards written by Samuel Booker McDowell and published by . This book was released on 1954 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The external features of the Bornean lizard, Lanthanotus borneensis Steindachner, are described, together with the skull, the hyoid, the tongue, and the roentgenogram of the postcranial osteology. The various theories concerning the relationships of Lanthanotus are evaluated. The belief that Lanthanotus is related to the Chinese lizard Shinisaurus crocodilurus Ahl is shown to be unsupported by either the internal or external morphology. Nor is there evidence of close relationship between Lanthanotus and Heloderma, although these two genera are most frequently placed together in the family Helodermatidae. On the other hand, structural resemblances between Lanthanotus and Varanus are found to be both numerous and important. However, it is here shown that there is still greater affinity between Lanthanotus and three Cretaceous families believed to be closely related to Varanus, the Aigialosauridae, Mosasauridae, and Dolichosauridae. Lanthanotus represents a monotypic family closely related to aigialosaurs and dolichosaurs. Lanthanotus shows many of the features to be expected in an ancestor of the snakes, and the close similarities between Lanthanotus and the boid-like, colubrid-like, and particularly the leptotyphlopid snakes, materially strengthen the argument that the snakes are derived from platynotan (Varanus-like) lizards. In contrast to other limbless reptiles commonly referred to the Serpentes, the Typhlopidae show no particular resemblance in cranial structure to either the platynotan lizards or the snakes (including Leptotyphlops). Reasons are advanced for believing that the Typhlopidae are wrongly placed in the Serpentes (or Ophidia) and represent a line of anguinid-like lizards that has become convergent to the Serpentes. Incidental to the work upon which we base the conclusions summarized above, several additional observations have been made on the anatomy and relationships of the saurian infraorder Anguinomorpha. The most important conclusions reached are as follows: 1. The family Pygopodidae is not related to the Anguinomorpha but represents an aberrant line of geckos, modified by a reduction of the limbs but retaining many features of the gekkonids. 2. The family Cordylidae (long known as Zonuridae) is not related to the Anguinomorpha but instead is closely related to the Gerrhosauridae, a family that differs in relatively minor ways from the Lacertidae. 3.The fossil family Euposauridae, frequently placed in or near the Anguinomorpha, shows no clear evidence of affinity to the Anguinomorpha and is not even definitely referable to the Squamata. 4. After the removal of these three families, the Anguinomorpha become a natural group, the members of which are characterized by their peculiar tongue structure, their method of tooth replacement, and a unique combination of osteological characters. The group, here considered an infraorder, contains the families Anguinidae (Anguidae auct.), Xenosauridae, Anniellidae, Helodermatidae, Varanidae, Aigialosauridae, Mosasauridae, Dolichosauridae, and Lanthanotidae. 5. This group, the Anguinomorpha, appears to have undergone an early separation into two main lines of evolution, here considered taxonomically as two superfamilies: Diploglossa (or Anguinoidea) and Platynota (or Varanoidea). 6. The line here called Diploglossa (Anguinidae, Xenosauridae, and Anniellidae) includes the more primitive families, primarily adapted to a crushing action of the jaws, with rigid mandibles. None of the known forms can be considered directly ancestral to the platynotan line. 7. The remainder of the Anguinomorpha represent a line (Platynota or Varanoidea) the jaws of which are primarily adapted for a grasping action, with a progressive development through the families of a hinge in the middle of the ramus of the lower jaw. This line includes forms distinctly more predatory in habits than is usual in the members of the first line. 8. The beaded lizards (Heloderma) have most recently been classified among the members of the first (diploglossan) line. But careful study of the morphology of Heloderma shows it to be close to Varanus, and a member of the second (platynotan) series, as was believed by most of the earlier workers. Although specialized in many respects, in other features of its structure Heloderma appears to be near the ancestral form that gave rise to the Platynota. 9. Upon examination of the skull, the Chinese genus Shinisaurus of previously unknown affinities proves to be a close relative of the Mexican genus Xenosaurus. The fossil genera Exostinus, Melanosaurus, and Necrosaurus (also known as Palaeovaranus) also appear to be members of the Xenosauridae. A revised classification of the Anguinomorpha is presented"--P. 134-135.

Download or read book The American Midland Naturalist written by and published by . This book was released on 1985 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Copeia written by and published by . This book was released on 1987 with total page 1260 pages. Available in PDF, EPUB and Kindle. Book excerpt: