Download or read book Leptoceratops dinosauria Ornithischia from the Hell Creek Formation cretaceous Maastrichtian of Eastern Montana written by Christopher J. Ott and published by . This book was released on 2002 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 with total page 658 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 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 Brachyceratops written by Charles Whitney Gilmore and published by . This book was released on 1917 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Hell Creek Formation and the Cretaceous Tertiary Boundary in the Northern Great Plains written by Joseph Herbert Hartman and published by Geological Society of America. This book was released on 2002 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brachyceratops A Ceratopsian Dinosaur from the Two Medicine Formation of Montana with Notes on Associated Fossil Reptiles written by Charles Whitney Gilmore and published by . This book was released on 2017-08-21 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Late Cretaceous and Paleocene Lissamphibia and Squamata of Montana and the End Cretaceous Mass Extinction written by David G. DeMar Jr. and published by . This book was released on 2015 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Late Cretaceous and Paleocene lissamphibians (e.g., salamanders and albanerpetontids) and squamates (e.g., lizards and snakes) are common components of the nonmarine vertebrate fossil record of North America. However, within the context of the Cretaceous-Paleogene (K-Pg) mass extinction (ca. 66 million years ago) those clades have received little attention relative to other aspects of the continental biota (e.g., dinosaurs, mammals). This dissertation represents the first comprehensive study of salamander (Caudata) and salamander-like lissamphibians (Allocaudata: Albanerpetontidae) and nonmarine squamates leading up to and across the K-Pg boundary. The primary impetus behind these studies was to better determine the timing, mode, and severity of lissamphibian and squamate extinctions and to address the proposed causal mechanisms of the mass extinction and their ancillary effects prior to (e.g., climate change, Deccan Traps volcanism, acid rain) and at the K-Pg boundary (e.g., bolide impact, thermal pulse). To assess lissamphibian and squamate diversity patterns leading up to and across the K-Pg boundary, my coauthors and I documented temporal species richness, taxonomic composition, and turnover. The larger lissamphibian dataset (2021 specimens versus 200 in squamates) allowed for additional quantitative measures of diversity to be calculated including faunal evenness, heterogeneity indices, and relative abundance distributions. Species-level diversity was recorded from a succession of ≥ 45 temporally constrained vertebrate microfossil localities of the uppermost Cretaceous Hell Creek and lowermost Paleocene Tullock formations of Garfield County, northeastern Montana, USA. Results of the caudate and allocaudate study revealed a stepwise pattern of species loss during the last ca. 200 k.y. of the Cretaceous (based on new and revised age determinations of the study area). Five of nine species were either extirpated (33%) from the local area or went extinct (22%) at or near the K-Pg boundary. Declines in species diversity and significant changes in community structure coincided with those species losses. Combined, these results suggest growing ecological stress in the local caudate and allocaudate faunas prior to the bolide impact at the K-Pg boundary. Squamates suffered high species extinctions (81%) during the last ca. 200 k.y. of the Cretaceous which were concentrated nearer the K-Pg boundary. Though species extinctions were highest across the K-Pg boundary, low to high levels of turnover (appearances and disappearances) in the squamate faunas of northeastern Montana occurred throughout most of the depositional duration of the Hell Creek Formation (ca. 1.9 Ma). Coincident with a moderate level of local squamate turnover that occurred more than ca. 300 k.y. before the K-Pg boundary was the loss of chamopsiids and platynotans possessing monocuspid and fang-like teeth, respectively, from the lower to upper halves of the Hell Creek Formation. A similar but less pronounced biostratigraphic pattern has been observed in other aspects of the local vertebrate faunas (euselachians, lissamphibians, turtles, and mammals). The caudate fauna of the earliest Paleocene satisfies several expectations of early post-extinction recovery faunas in being species depauperate (five species), predominated by a “bloom” taxon (Opisthotriton kayi), and invaded by immigrants (Proamphiuma cretacea). A Lazarus taxon (the caudate Prodesmodon copei) reappeared as early as the Pu2/3 of the local section. The squamate fauna during that interval possessed two chamopsiid lizards. Chamopsiids are part of a clade thought to have gone extinct during the K-Pg mass extinction. These new records suggest that chamopsiids were a “dead clade walking” as they failed to recover in abundance or diversity following the extinction. Several new fossil lissamphibians and squamates were documented in this dissertation including a new fossil salamander (proteid) and several lizards (indeterminate iguanomorph, six scincomorphs, and five anguimorphs) from the Hell Creek Formation. Results of my systematic and phylogenetic work demonstrate that the Hell Creek Formation of the study area contains the taxonomically richest caudate and squamate assemblages known from the Mesozoic of North America. My coauthored description and phylogenetic analysis of a new stem iguanian lizard from the slightly older deposits of the Two Medicine Formation (Campanian) of northwestern Montana has yielded important insights into the evolution of Iguanomorpha during the Late Cretaceous. The new taxon, Magnuviator ovimonsensis gen. et sp. nov., represents the oldest unequivocal iguanomorph from North America and is the sister taxon to a clade of paracontemporaneous iguanomorphs (Temujiniidae) from the Gobi Desert of Mongolia. Its phylogenetic relationships imply that crown iguanians were likely absent from North America prior to the K-Pg boundary despite previous claims. Combined, these systematic and phylogenetic studies add to the growing taxonomic inventory of the lissamphibian and squamate fossil record and enhance our understanding of their evolution within Montana, across the Western Interior of North America, and across the northern landmasses of Laurasia during the Late Cretaceous and early Paleocene.
Download or read book Through the End of the Cretaceous in the Type Locality of the Hell Creek Formation in Montana and Adjacent Areas written by Gregory P. Wilson and published by Geological Society of America. This book was released on 2014-01-21 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The chapters represent a surge of field and laboratory research activity, illustrating the impacts of new and refined methods and tools. This volume explores geologic and biologic history preserved in the strata bounding the Cretaceous-Paleogene boundary"--Provided by publisher.
Download or read book Tyrannosaurid Paleobiology written by J. Michael Parrish and published by Indiana University Press. This book was released on 2013-07-05 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawn from a 2005 international symposium, these essays explore current tyrannosaurid current research and discoveries regarding Tyrannosaurus rex. The opening of an exhibit focused on “Jane,” a beautifully preserved tyrannosaur collected by the Burpee Museum of Natural History, was the occasion for an international symposium on tyrannosaur paleobiology. This volume, drawn from the symposium, includes studies of the tyrannosaurids Chingkankousaurus fragilis and “Sir William” and the generic status of Nanotyrannus; theropod teeth, pedal proportions, brain size, and craniocervical function; soft tissue reconstruction, including that of “Jane”; paleopathology and tyrannosaurid claws; dating the “Jane” site; and tyrannosaur feeding and hunting strategies. Tyrannosaurid Paleobiology highlights the far ranging and vital state of current tyrannosaurid dinosaur research and discovery. “Despite being discovered over 100 years ago, Tyrannosaurus rex and its kin still inspire researchers to ask fundamental questions about what the best known dinosaur was like as a living, breathing animal. Tyrannosaurid Paleobiology present a series of wide-ranging and innovative studies that cover diverse topics such as how tyrannosaurs attacked and dismembered prey, the shapes and sizes of feet and brains, and what sorts of injuries individuals sustained and lived with. There are also examinations of the diversity of tyrannosaurs, determinations of exactly when different kinds lived and died, and what goes into making a museum exhibit featuring tyrannosaurs. This volume clearly shows that there is much more to the study of dinosaurs than just digging up and cataloguing old bones.” —Donald M. Henderson, Royal Tyrrell Museum of Palaeontology
Download or read book Dinosaurs of New Mexico written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on 1993 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Azhdarchid Pterosaur Cervical Vertebra from the Hell Creek Formation Maastrichtian of Southeastern Montana written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brachyceratops written by Charles Whitney Gilmore and published by Nabu Press. This book was released on 2014-03 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Download or read book Brachyceratops written by Charles Whitney Gilmore and published by . This book was released on 2015-02-12 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Transport induced Abrasion of Fossil Reptilian Teeth written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ceratopsian Dinosaurs from the Two Medicine Formation Upper Cretacious of Montana written by Charles Whitney Gilmore and published by . This book was released on 1939 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vertebrate Paleontology in Utah written by David D. Gillette and published by Utah Geological Survey. This book was released on 1999 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 52 papers in this vary in content from summaries or state-of-knowledge treatments, to detailed contributions that describe new species. Although the distinction is subtle, the title (Vertebrate Paleontology in Utah) indicates the science of paleontology in the state of Utah, rather than the even more ambitious intent if it were given the title “Vertebrate Paleontology of Utah” which would promise an encyclopedic treatment of the subject. The science of vertebrate paleontology in Utah is robust and intense. It has grown prodigiously in the past decade, and promises to continue to grow indefinitely. This research benefits everyone in the state, through Utah’s muse ums and educational institutions, which are the direct beneficiaries.
Download or read book New Ceratopsian Dinosaur from the Upper Cretaceous of Montana written by Austin Hobart Clark and published by . This book was released on 1914 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt:
