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Chirotheres
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Download or read book Chirotheres written by Hendrik Klein and published by Indiana University Press. This book was released on 2023-07-25 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive in detail and worldwide in scope, Chirotheres is the definitive compendium of what is known about the five-toed footprints of Triassic archosaurs, ancestors of the crocodiles. Sandstone slabs with extensive trackways have been known for almost two centuries and are highlights in museum exhibits around the globe. These trackways provide direct insight into the locomotion and behavior of the fascinating reptiles that made these tracks, and, together with known skeletons, they allow a richer reconstruction of chirothere lifestyle than is possible from bones alone. Written by expert researchers in the fields of vertebrate ichnology, vertebrate paleontology, and scientific illustration, Chirotheres explores the various facets of chirothere research including the history of their study, footprint formation and preservation, the bone record, the environment and lifestyle of chirotheres, and finally, their disappearance at the end of the Triassic. Chirotheres also features a global compendium of track collections with chirothere material, including specimen numbers, detailed phylogenetic definitions of track makers, and extensive measurements from key chirothere tracks and trackways. It represents an invaluable resource of anyone interested in these ancient animals.
Book Synopsis Ruling Reptiles by : Holly N. Woodward
Download or read book Ruling Reptiles written by Holly N. Woodward and published by Indiana University Press. This book was released on 2023-09-05 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern crocodylians—crocodiles, alligators, caiman (Central and South America), and gharials (India)—have evolved over 250 million years from a fully terrestrial, bipedal ancestor. Along with birds, crocodylians are the only living members of Archosauria, the group including nonavian dinosaurs. Ruling Reptiles features contributions on a broad range of topics surrounding crocodylian evolution and biology including osteology, osteohistology, developmental biology, myology, odontology, functional morphology, allometry, body size estimation, taphonomy, parasitology, ecology, thermophysiology, and ichnology. It demonstrates how the wide variety of these studies can also provide crucial insights into dinosaurian biology and evolution. Featuring the latest findings and interpretations, Ruling Reptiles: Crocodylian Biology and Archosaur Paleobiology is an essential resource for zoologists, biologists, and paleontologists.
Download or read book Chirotheres written by Hendrik Klein and published by Indiana University Press. This book was released on 2023-07-25 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive in detail and worldwide in scope, Chirotheres is the definitive compendium of what is known about the five-toed footprints of Triassic archosaurs, ancestors of the crocodiles. Sandstone slabs with extensive trackways have been known for almost two centuries and are highlights in museum exhibits around the globe. These trackways provide direct insight into the locomotion and behavior of the fascinating reptiles that made these tracks, and, together with known skeletons, they allow a richer reconstruction of chirothere lifestyle than is possible from bones alone. Written by expert researchers in the fields of vertebrate ichnology, vertebrate paleontology, and scientific illustration, Chirotheres explores the various facets of chirothere research including the history of their study, footprint formation and preservation, the bone record, the environment and lifestyle of chirotheres, and finally, their disappearance at the end of the Triassic. Chirotheres also features a global compendium of track collections with chirothere material, including specimen numbers, detailed phylogenetic definitions of track makers, and extensive measurements from key chirothere tracks and trackways. It represents an invaluable resource of anyone interested in these ancient animals.
Book Synopsis Bulletin of the Geological Society of America by : Geological Society of America
Download or read book Bulletin of the Geological Society of America written by Geological Society of America and published by . This book was released on 1955 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Nonmarine Triassic written by and published by . This book was released on 1993 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aspects of Vertebrate History by : Louis L. Jacobs
Download or read book Aspects of Vertebrate History written by Louis L. Jacobs and published by . This book was released on 1980 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the Museum of Comparative Zoology by : Harvard University. Museum of Comparative Zoology
Download or read book Bulletin of the Museum of Comparative Zoology written by Harvard University. Museum of Comparative Zoology and published by . This book was released on 1953 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Liverpool and Manchester Geological Journal by :
Download or read book The Liverpool and Manchester Geological Journal written by and published by . This book was released on 1961 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Paleobiogeography by : Charles A. Ross
Download or read book Paleobiogeography written by Charles A. Ross and published by . This book was released on 1976 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Sloughing of the Melanic Area of the Dorsal Fin, an Ontogenetic Process in Tylosurus Raphidoma by : Charles Marcus Breder
Download or read book The Sloughing of the Melanic Area of the Dorsal Fin, an Ontogenetic Process in Tylosurus Raphidoma written by Charles Marcus Breder and published by . This book was released on 1952 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Small juvenile Tylosurus raphidoma (Ranzani) concomitantly develop elongation of the posterior rays of the dorsal fins and mandibular lappets. Both structures are areas of intense melanin concentration. 2. Larger juveniles and sexually mature adults lack both these features, having no mandibular lappets and possessing a dorsal fin which is high anteriorly and low posteriorly, and shows no concentration of melanophores at any place. 3. The metamorphosis from one form into the other is evidently rapid, for individuals in the state of transformation are not nearly so common as those above and below the size at which it occurs. 4. This transformation takes place when the fish are 200 mm. and 300 mm. in standard length and long before sexual maturity is attained which at the earliest is not under 600 mm.; therefore it is evidently not under the control of endocrine changes which take place at the attainment of sexual maturity. 5. The transformation takes place at an age of approximately six months, and sexual maturity is not attained until a year has passed. 6. Individuals in the transitional stage may be found in the summer and fall, most of the spawning evidently taking place in the first half of the year. 7. The black areas of the dorsal are reduced not by resorption but by a process of sloughing off. The melanophores break down first, the fin membranes then disintegrate, and finally the fin rays snap off at their articulations. 8. Before the destructive changes take place, the final form of the fin is foreshadowed by the shape of the melanic area of the juvenile fin. 9. A change in behavior takes place before the process of sloughing off occurs, the young juveniles associating with floating twigs or stems about their own size and general color. After they stop this association, the changes described take place, and from then on they avoid such objects and live freely in open water. 10. Histological examination of the mandibular lappets of Tylosurus and the barbels of Cypselurus showed that these structures are eliminated by a process of resorption. 11. The presence of large numbers of coarse granular eosinophiles in all these involuting structures may be associated either with parasitism or with the resorption process. 12. No taste buds were found to be present in either the belonid lappets or the exocoetid barbels which are evidently homologous, a condition apparently unique among teleost oral appendages"--P. 21.
Book Synopsis Geology of the Llano Estacado by : New Mexico Geological Society. Annual Field Conference
Download or read book Geology of the Llano Estacado written by New Mexico Geological Society. Annual Field Conference and published by . This book was released on 2001 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ichnology written by Luis A. Buatois and published by Cambridge University Press. This book was released on 2011-08-11 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ichnology is the study of traces created in the substrate by living organisms. This is the first book to systematically cover basic concepts and applications in both paleobiology and sedimentology, bridging the gap between the two main facets of the field. It emphasizes the importance of understanding ecologic controls on benthic fauna distribution and the role of burrowing organisms in changing their environments. A detailed analysis of the ichnology of a range of depositional environments is presented using examples from the Precambrian to the recent, and the use of trace fossils in facies analysis and sequence stratigraphy is discussed. The potential for biogenic structures to provide valuable information and solve problems in a wide range of fields is also highlighted. An invaluable resource for researchers and graduate students in paleontology, sedimentology and sequence stratigraphy, this book will also be of interest to industry professionals working in petroleum geoscience.
Book Synopsis Vertebrate Coprolites by : Adrian P. Hunt
Download or read book Vertebrate Coprolites written by Adrian P. Hunt and published by New Mexico Museum of Natural History and Science. This book was released on 2012 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Late Triassic World by : Lawrence H. Tanner
Download or read book The Late Triassic World written by Lawrence H. Tanner and published by Springer. This book was released on 2017-11-16 with total page 805 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the latest science on all significant geological and paleontological aspects of the Earth during the Late Triassic Period. Rather than presenting a collection of narrowly focused research papers, the volume consists of a series of peer-reviewed chapters on specific aspects of the Late Triassic world (e.g., tectonics, magmatism, paleobotany, climate, etc.), all authored by experts in the subject of their respective chapters. Each chapter reviews and summarizes the latest findings in these fields and also includes a review of the pertinent literature. The author list is very broadly international and forms a veritable who’s who of expertise in these fields. The book is loosely organized to present the physical aspects of Earth during the Late Triassic at the outset, followed by the paleontological aspects. The latter section is further organized to present the record of the marine environment first before moving onto land, with fauna followed by flora. The volume closes with a review of the end-Triassic extinctions.
Book Synopsis THE TRIASSIC TETRAPOD FOOTPRINT RECORD by : HENDRIK KLEIN
Download or read book THE TRIASSIC TETRAPOD FOOTPRINT RECORD written by HENDRIK KLEIN and published by New Mexico Museum of Natural History and Science. This book was released on 2021-04-16 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dinosaur Tracks and Traces by : David D. Gillette
Download or read book Dinosaur Tracks and Traces written by David D. Gillette and published by Cambridge University Press. This book was released on 1989 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book ever to be devoted to this subject.
Book Synopsis The Triassic Timescale by : Spencer G. Lucas
Download or read book The Triassic Timescale written by Spencer G. Lucas and published by Geological Society of London. This book was released on 2010 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mesozoic Era begins with the approximately 50-million-year-long Triassic Period, a major juncture in Earth history when the vast Pangaean supercontinent completed its assembly and began its fragmentation, and the global biota diversified and modern-ized after the end-Permian mass extinction, the most extensive biotic decimation of the Phanerozoic. The temporal ordering of geological and biotic events during Triassic time thus is critical to the interpretation of some unique and pivotal events in Earth his-tory. This temporal ordering is mostly based on the Triassic time-scale, which has been developed and refined for nearly two centu-ries. This book reviews the state of the art of the Triassic timescale and includes comprehensive analyses of Triassic radio-isotopic ages, magnetostratigraphy, isotope-based and cyclostratigraphic correlations and timescale -relevant marine and non-marine bio-stratigraphy.
