Fossil Crocodilians From Colombia And The Cenozoic History Of The Crocodilia In South America
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Fossil Crocodilians From Colombia And The Cenozoic History Of The Crocodilia In South America
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Author : Wann Langston
language : en
Publisher:
Release Date : 1965
Fossil Crocodilians From Colombia And The Cenozoic History Of The Crocodilia In South America written by Wann Langston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Nature categories.
Fossil Crocodilians From Colombia And The Cenozoic History Of The Crocodilia In South America
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Author : Wann Langston
language : en
Publisher:
Release Date : 1965
Fossil Crocodilians From Colombia And The Cenozoic History Of The Crocodilia In South America written by Wann Langston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with categories.
University Of California Publications In Geological Sciences
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Author : University of California (Berkeley, U.S.A.)
language : en
Publisher:
Release Date : 1965
University Of California Publications In Geological Sciences written by University of California (Berkeley, U.S.A.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with categories.
Fossil Crocodilians From Colombia And The Cenozooic History Of The Crocodilia In South America
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Author : Wann Langston
language : en
Publisher:
Release Date : 1965
Fossil Crocodilians From Colombia And The Cenozooic History Of The Crocodilia In South America written by Wann Langston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with categories.
Fossil Crocodilians From The High Guajira Peninsula Of Colombia And The History Of Neogene Crocodilian Diversity In Tropical South America
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Author : Jorge W. Moreno-Bernal
language : en
Publisher:
Release Date : 2014
Fossil Crocodilians From The High Guajira Peninsula Of Colombia And The History Of Neogene Crocodilian Diversity In Tropical South America written by Jorge W. Moreno-Bernal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The greatest diversity of Cenozoic crocodilians occurred during the Miocene in equatorial South America. However, the origin of this high diversity and its relationship to environmental factors are poorly understood. Most described species come from localities assigned to Laventan (13.8-11.8 Ma) and Huayquerian (9.0-6.8 Ma) South American land mammal ages (SALMAS), whereas the record is sparse in the early to middle Miocene and after the latest Miocene and Pliocene. Field research in the Castilletes (early Miocene-Pliocene) Formation in the High Guajira Peninsula of Colombia provides new fossil data on the origin of Neotropical crocodylian diversity. The Castilletes Formation crops out most extensively in the Cocinetas Basin, and represent depositional environments consisting of deltaic and shallow marine systems in the lower Castilletes and predominately fluvial environments in the upper Castilletes. Crocodilian fossils from the Castilletes Formation include gavialoids, alligatoroids and crocodyloids. Gavialoid remains have been recovered from both terrestrial and shallow marine deposits in the lower Castilletes. Remains of the specialized caimanines Purussaurus and Mourasuchus extend the temporal range of both lineages into the early middle Miocene (15-16 Ma). These records suggest that high diversity crocodilian assemblages were already established by the early Miocene or late Oligocene. Fossils from the upper Castilletes Formation include cranial elements identified as a non-tomistomine crocodyloid, some of them assigned to cf. Crocodylus. These records indicate that by the Pliocene, endemic assemblages were extinct, at least in the northern parts of the continent, allowing the establishment of Crocodylus. The pattern of crocodilian diversity in the Neogene of equatorial South America suggests that diversity was highly linked to hydrographic conditions. The development of high diversity assemblages developed in a time of greater connections among river drainages and mega-wetland systems. The isolation of river drainages and disappearance of mega-wetlands are correlated with the extinction of most crocodilian lineages. Aridity in peripheral drainages may have caused local extinctions outside Amazonia. The change from wetland to riverine conditions has been proposed as the cause of crocodilian extinctions in the western Amazon, but this remains to be tested.
Encyclopedia Of Paleontology
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Author : Ronald Singer
language : en
Publisher: Routledge
Release Date : 2019-06-04
Encyclopedia Of Paleontology written by Ronald Singer and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-04 with History categories.
The Encyclopedia of Paleontology is designed to address the shortage of general reference works on both vertebrate and invertebrate paleontology and to serve the needs of students and lay persons interested in the field. As the encyclopedia aims to provide basic information, the majority of the 350 entries are devoted to explanations of paleontological concepts and techniques, examinations of the evolutionary development of particular organisms and biological features, profiles of major discoveries, and biographies of leading scientists. Each entry includes an essay and a further reading list. An international team of 200 leading experts in the field has prepared the illustrations and the essays, which range from concise descriptions to comprehensive discussions.
The Platyrrhine Fossil Record
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Author : John G. Fleagle
language : en
Publisher: Elsevier
Release Date : 2013-09-17
The Platyrrhine Fossil Record written by John G. Fleagle and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-17 with Science categories.
The Platyrrhine Fossil Record is a compendium of papers presented in a symposium of the 12th Congress of the International Congress of Primatology held in Brazil. One paper reviews evidence from fossil platyrrhines where the author concludes new dating and environmental data where these animals lived. Another paper describes the major changes pertaining to South American mammalian fauna during the Cenozoic Era, which he relates to global and regional geotectonic changes. Other papers review the paleontology and geology of the Miocene Pintura Formation and reassess the morphological transformations traditionally assumed as having been involved in platyrrhine phylogeny. One author also proposes that a prosimian-like ancestor is probably the predecessors of anthropoids; any similarities and primitive mammals can be evolutionary reversals associated with quadrupedal movements. The text also addresses the issue whether anthropoids, including platyrrhines, evolved from a prosimian ancestor or prosimians are just a group with mammalian postcranial skeletal structure. One author also reviews fossil remains found in the Caribbean, citing seven endemic taxa of platyrrhines in Cuba, Hispaniola, and Jamaica. Anthropologists, researchers involved in anatomical sciences, academicians, and administrators whose works are connected with museums of natural history or institutes of primate research will find this collection valuable.
A Bibliography Of The American Alligator Alligator Mississippiensis
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Author : I. Lehr Brisbin
language : en
Publisher:
Release Date : 1986
A Bibliography Of The American Alligator Alligator Mississippiensis written by I. Lehr Brisbin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Alligators categories.
Supercroc And The Origin Of Crocodiles
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Author : Christopher Sloan
language : en
Publisher:
Release Date : 2002
Supercroc And The Origin Of Crocodiles written by Christopher Sloan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Crocodiles, Fossil categories.
Discusses prehistoric crocodiles, including the discovery of SuperCroc in the Sahara Desert, and the lifestyles, habitats, and conservation of modern crocodiles.
Bibliography Of Fossil Vertebrates 1964 1968
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Author : Charles Lewis Camp
language : en
Publisher: Geological Society of America
Release Date : 1972
Bibliography Of Fossil Vertebrates 1964 1968 written by Charles Lewis Camp and has been published by Geological Society of America this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Vertebrates, Fossil categories.