Download or read book Cranial Morphology of Prosaurolophus Ornithischia Hadrosauridae written by John R. Horner and published by . This book was released on 1992 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A New Skull of Parasaurolophus Dinosauria Hadrosauridae from the Kirtland Formation of New Mexico and a Revision of the Genus written by Robert M. Sullivan and published by New Mexico Museum of Natural History and Science. This book was released on 1999 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cranial Anatomy and Variation of Prosaurolophus Maximus Dinosauria Hadrosauridae written by Christopher Thomas McGarrity and published by . This book was released on 2011 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prosaurolophus maximus is a crested hadrosaurine known from numerous specimens from the Dinosaur Park Formation of Alberta. Therefore, it is an ideal taxon to reconstruct patterns of growth and variation in hadrosaurids, and improve our understanding of their evolutionary relationships. This study describes the cranial anatomy of P. maximus, quantitatively examines its range of variation, and provides the first ontogenetic series for this taxon. A second species, P. blackfeetensis, was named based on morphological differences in the characteristic nasal crest; however, morphometric results fail to quantitatively differentiate P. blackfeetensis from P. maximus. A species-level phylogenetic analysis of hadrosaurids recovers P. maximus and P. blackfeetensis as sister taxa. Based on both the morphometric and phylogenetic data, this study supports the previous hypothesis that P. blackfeetensis is a junior synonym of P. maximus thereby substantially increasing its temporal range, and suggests a long period of morphological stasis in this taxon.
Download or read book Cranial Morphology of the Hadrosaurian Dinosaurs of North America written by John H. Ostrom and published by . This book was released on 1961 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Horns and Beaks written by Kenneth Carpenter and published by Indiana University Press. This book was released on 2006-11-14 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Horns and Beaks completes Ken Carpenter's series on the major dinosaur types. As with his volumes on armored, carnivorous, and sauropodomorph dinosaurs, this book collects original and new information, reflecting the latest discoveries and research on these two groups of animals. The Ornithopods include Iguanodon, one of the first dinosaurs ever discovered and analyzed, and perhaps the most common and best-documented group, the hadrosaurs or "duckbilled dinosaurs." The Ceratopsians include Triceratops, known for its distinctive three-horned skull and protective collar. Contributors are Michael K. Brett-Surman, Kathleen Brill, Kenneth Carpenter, Benjamin S. Creisler, Tony DiCroce, Andrew A. Farke, Peter M. Galton, David Gilpin, Thomas M. Lehman, Nate L. Murphy, Christopher J. Ott, Gregory S. Paul, Xabier Pereda Suberbiola, Albert Prieto-Marquez, Bruce Rothschild, José Ignacio Ruiz-Omeñaca, Darren H. Tanke, Mark Thompson, David Trexler, and Jonathan R. Wagner.
Download or read book New Perspectives on Horned Dinosaurs written by Michael J. Ryan and published by Indiana University Press. This book was released on 2010-06-22 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Easily distinguished by the horns and frills on their skulls, ceratopsians were one of the most successful of all dinosaurs. This volume presents a broad range of cutting-edge research on the functional biology, behavior, systematics, paleoecology, and paleogeography of the horned dinosaurs, and includes descriptions of newly identified species.
Download or read book Hadrosaurs written by David A. Eberth and published by Indiana University Press. This book was released on 2014-11-05 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive study of the Late Cretaceous, duck-billed dinosaur, featuring insights on its origins, anatomy, and more. Hadrosaurs—also known as duck-billed dinosaurs—are abundant in the fossil record. With their unique complex jaws and teeth perfectly suited to shred and chew plants, they flourished on Earth in remarkable diversity during the Late Cretaceous. So ubiquitous are their remains that we have learned more about dinosaurian paleobiology and paleoecology from hadrosaurs than we have from any other group. In recent years, hadrosaurs have been in the spotlight. Researchers around the world have been studying new specimens and new taxa seeking to expand and clarify our knowledge of these marvelous beasts. This volume presents the results of an international symposium on hadrosaurs, sponsored by the Royal Tyrrell Museum and the Royal Ontario Museum, where scientists and students gathered to share their research and their passion for duck-billed dinosaurs. A uniquely comprehensive treatment of hadrosaurs, the book encompasses not only the well-known hadrosaurids proper, but also Hadrosaouroidea, allowing the former group to be evaluated in a broader perspective. The 36 chapters are divided into six sections—an overview, new insights into hadrosaur origins, hadrosaurid anatomy and variation, biogeography and biostratigraphy, function and growth, and preservation, tracks, and traces—followed by an afterword by Jack Horner. “Well designed, handsome and fantastically well edited (credit there to Patricia Ralrick), congratulations are deserved to the editors for pulling together a vast amount of content, and doing it well. The book contains a huge quantity of information on these dinosaurs.” —Darren Naish, co-author of Tetrapod Zoology, Scientific American “Hadrosaurs have not had the wide publicity of their flesh-eating cousins, the theropods, but this remarkable dinosaur group offers unique opportunities to explore aspects of palaeobiology such as growth and sexual dimorphism. In a comprehensive collection of papers, all the hadrosaur experts of the world present their latest work, exploring topics as diverse as taxonomy and stratigraphy, locomotion and skin colour.” —Michael Benton, University of Bristol
Download or read book At the Top of the Grand Staircase written by Alan L. Titus and published by Indiana University Press. This book was released on 2013-10-09 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Grand Staircase-Escalante National Monument is the location of one of the best-known terrestrial records for the late Cretaceous. Prior fieldwork confirmed the richness of the area, but a major effort begun in the new century has documented over 2,000 new vertebrate fossil sites, provided new radiometric dates, and identified five new genera of ceratopsids, two new species of hadrosaur, a probable new genus of hypsilophodontid, new pachycephalosaurs and ankylosaurs, several kinds of theropods (including a new genus of oviraptor and a new tyrannosaur), plus the most complete specimen of a Late Cretaceous therizinosaur ever collected from North America, and much more. The research documented in this book is rewriting our understanding of Late Cretaceous paleobiogeography and dinosaur phyletics. At the Top of the Grand Staircase: The Late Cretaceous of Southern Utah is a major stepping stone toward a total synthesis of the ecology and evolution of the Late Cretaceous ecosystems of western North America.
Download or read book Late Cretaceous Vertebrates from the Western Interior written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on 2006-01-01 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lower and Middle Cretaceous Terrestrial Ecosystems written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on 1998 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dinosaur Provincial Park written by Philip J. Currie and published by Indiana University Press. This book was released on 2005 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This comprehensive history of a remarkable window into the history of the earth will be required reading for everyone interested in the life of the past."--BOOK JACKET.
Download or read book The Boilerplate Rhino written by David Quammen and published by Simon and Schuster. This book was released on 2012-10-23 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: From “one of the most fascinating and thought-provoking writers of natural history” (The Seattle Times), a collection of enduring essays that form a bestiary of wondrous creatures and a gallery of the human faces that peer at them. The Boilerplate Rhino brings together twenty-six of David Quammen’s most thoughtful and engaging essays from his column for Outside magazine, gifting readers with an irrepressible assortment of ideas to explore, conundrums to contemplate, and wondrous creatures to behold. In lucid, penetrating, and often quirkily idiosyncratic prose, David Quammen takes his readers with him as he explores the world. His travels lead him to rattlesnake handlers in Texas; a lizard specialist in Baja; the dinosaur museum in Jordan, Montana; and halfway across Indonesia in search of the perfect Durian fruit. He ponders the history of nutmeg in the southern Moluccas, meditates on bioluminescent beetles while soaking in the waters of the Amazon, and delivers “The Dope on Eggs” from a chicken ranch near his hometown in Montana. Quammen's travels are always jumping-off points to explore the rich and sometimes horrifying tension between humankind and the natural world, in all its complexity and ambivalence. The result is another irrepressible assortment of ideas to explore, conundrums to contemplate, and wondrous creatures to behold.
Download or read book Vertebrate Paleontology in New Mexico written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Dinosauria written by David B. Weishampel and published by Univ of California Press. This book was released on 2007-12-17 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition includes coverage of dinosaur systematics, reproduction, life history strategies, biogeography, taphonomy, paleoecology, thermoregulation & extinction.
Download or read book Journal of Vertebrate Paleontology written by and published by . This book was released on 2011 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cranial Morphology Taxonomy and Systematics of Pachycephalosaurids Dinosauria Ornithischia written by Aaron David Dyer and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pachycephalosauridae (pachcycephalosaurids) were small to medium sized bipedal ornithischians, known solely from the Late Cretaceous of North America and Asia. These dinosaurs are characterised by thick, often domed frontals and parietals (frontoparietal dome), which are thought to have been used in intraspecific head-butting combat rituals. The dome, along with their thickened skull bones have a high preservation potential, particularly compared to the rest of the skeleton. Thus, the vast majority of pachycephalosaurid fossils consist of their unique skull bones, and so much research on the group has focused on these elements. The morphology of the thickened skull roof is included in the diagnosis of every species, yet the skull roof changes dramatically through ontogeny, and numerous putative species have been reidentified as juvenile or subadult representatives of other species. In this thesis, I focus on exploring morphological variation amongst pachycephalosaurid skulls, particularly the frontoparietal dome, and address its utility in pachycephalosaurid taxonomy and phylogenetics. I begin with describing the anatomy of the only known specimen of the controversial Gravitholus albertae, from the Late Cretaceous of Alberta, Canada. The specimen represents a heavily fused partial skull roof, and the degree of fusion has prevented a detailed description of the specimen, thus the validity of the species has been repeatedly justified and challenged. Alternative taxonomic hypotheses suggest Gravitholus albertae may be synonymous with Hanssuesia sternbergi or Stegoceras validum). I utilise synchrotron μCT imaging to identify the locations of the holotype's fused contacts, which facilitates a detailed description of the specimen. Gravitholus albertae was then included with Hanssuesia sternbergi and Stegoceras validum in morphometric analyses, to evaluate the distinctness of these three species. There are no ontogenetic-independent features of "Gravitholus albertae" that would justify a unique species. Instead, Gravitholus albertae and Hanssuesia sternbergi are morphologically consistent with mature Stegoceras validum. Thus, Gravitholus albertae and Hanssuesia sternbergi are synonymous with Stegoceras validum. Interestingly, Stegoceras validum appears to possess adult dimorphism in the thickness of the frontonasal boss, which is not explained by previous taxonomic hypotheses. Instances of post-traumatic injuries, consistent with head-butting, appear restricted to individuals with thicker frontonasal bosses. The dimorphism in Stegoceras validum is interpreted as sexual dimorphism, with the thicker bossed sex engaging in ritualistic intraspecific combat. I then move onto assessing morphological variation in pachycephalosaurid frontoparietals by statistically testing previously proposed discrete character states used in phylogenetic analyses, attempt to identify new characters and states, and comment on the validity of Stegoceras novomexicanum. The use of several features previously used as structures for phylogenetic characters are supported, and the distinction of their character stares are statistically demonstrated. These states are broadly consistent with previous taxonomic assessments, although a few species in each revised character are reassessed. There is no morphological support for "Stegoceras novomexicanum" and is regarded as Pachycephalosauridae indeteterminate. "Stegoceras novomexicanum ", along with other invalidated pachycephalosaurids, were removed from a phylogenetic analysis based on a revised morphological character matrix. This phylogenetic tree of Pachycephalosauria (pachycephalosaurians) is broadly similar to pervious analyses. The main differences include recovering Colepiocephale lambei as a basal Pachycephalosaurinae (pachycephalosaurines), and a polyphyletic Sphaerotholus. Derived pachycephalosaurines appear to be united by a cranial dome that initially develops on the parietals (as opposed to initially developing on the frontals). This distinction deserves further investigation with histological and CT methodologies to determine the developmental pathways that different pachycephalosaurid species took to grow their domes.
Download or read book Cranial Ontogeny and Evolution of the Lambeosaurien Dinosaur Hypacrosaurus Stebingeri Ornithischia Hadrosauridae written by Kirsten Sara Brink and published by . This book was released on 2009 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
