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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 552 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 ofchirothere 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 featuresa 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.
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 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Collected papers by : Frank Elmer Peabody
Download or read book Collected papers written by Frank Elmer Peabody and published by . This book was released on 1947 with total page 458 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 Sediment-organism Interactions by : Richard Granville Bromley
Download or read book Sediment-organism Interactions written by Richard Granville Bromley and published by . This book was released on 2007 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 1968 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Northeastern New Mexico by : New Mexico Geological Society. Field Conference
Download or read book Northeastern New Mexico written by New Mexico Geological Society. Field Conference and published by . This book was released on 1987 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Geology and Landscapes of New Jersey by : Peter Edward Wolfe
Download or read book The Geology and Landscapes of New Jersey written by Peter Edward Wolfe and published by . This book was released on 1977 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geology and Allied Sciences by : Walther Huebner
Download or read book Geology and Allied Sciences written by Walther Huebner and published by . This book was released on 1939 with total page 432 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 Dawn of the Dinosaurs by : Nicholas C. Fraser
Download or read book Dawn of the Dinosaurs written by Nicholas C. Fraser and published by . This book was released on 2006 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Science and art collaborate to recreate life on Earth more than 200 million years ago
Download or read book Dinosaurs written by Steve Brusatte and published by Quercus. This book was released on 2014-08-19 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the king of the dinosaurs the Tyrannosaurus Rex to the formidable Brachiosaurus, dinosaurs are a perennial favorite of children of all ages. The 14 stunning images in this bookazine reveal the dinosaurs as you have never seen them before. Every poster is accompanied by the facts and figures surrounding the individual dinosaurs, including information about their habitat, food and predators. Featuring a dinosaur family tree and scale pictures to help compare the size and dominance of these incredible beasts, this entertaining and educational collection will captivate and amaze.
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 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:
