03340cam a2200397 i 4500 282041 282041 20227903 20190617151702.0 171213r20182018dcua b f001 0 eng 2017059091 DGPO/DLC eng rda DGPO DLC PUCPR pcc n-us-md SI 1.30:100 The geology and vertebrate paleontology of Calvert Cliffs, Maryland / edited by Stephen J. Godfrey. Washington, D.C. : Smithsonian Institution Scholarly Press, 2018. 274 pages : illustrations (some color), maps ; 28 cm. txt n rdamedia nc rdacarrier Smithsonian contributions to paleobiology, 0081-0266 ; number 100 Includes bibliographical references and index. The last comprehensive review of the fossil vertebrates from the Miocene of Calvert Cliffs was published more than 100 years ago. This volume is a collection of papers that updates some of the geological features of Calvert Cliffs and provides reviews of the fossil biota that includes representatives from the following taxonomic groups: chondrichthyans (chimaeras, shark, skates, and rays), actinopterygians (ray-finned fishes), crocodilians (crocodiles), pinnipeds (seals), and sirenians (sea cows). Peter Vogt, Ralph R. Eshelman, and Stephen J. Godfrey document how the 20-40 m (65-130 feet) high Calvert Cliffs along the Western Shore of Chesapeake Bay continue to yield insights into 18-8 Ma (middle Miocene) geology, marine and terrestrial vertebrate fauna, and origin and evolution of Chesapeake Bay and Calvert Cliffs up to the present. These exposures rank high among the best-known fossiliferous deposits of any age. Bretton W. Kent describes the cartilaginous fish (the chondrichthyan) fauna consisting of 53 species; three chimaeras (ratfishes), 38 sharks, and 12 skates and rays; a fauna rich in large macrophagous sharks and large neritic rays. Giorgio Carnevale and Stephen J. Godfrey present an account of the 38 actinopterygian taxa known from osteological remains and a diverse otolith assemblage of at least 55 taxa. These actinopterygians show an affinity for well-oxygenated muddy and sandy substrates dominated by shallow water species characteristic of the inner shelf, and secondarily by epipelagic taxa. Robert E. Weems details the crocodilians referable to the tomistomine Thecachampsa. The closest living relative is Tomistoma schlegelii, the false-gharial of Southeast Asia. Two species are present: Thecachampsa sericodon and T. antiquus--Provided by publisher. Godfrey, Stephen J. 296439 Smithsonian contributions to paleobiology ; 100. QE694 .G46 2018 23 566.09752 G3457 Geology, Stratigraphic Miocene 101970 Geology Maryland Calvert Cliffs 101964 Paleontology Miocene 147060 Paleontology Maryland Calvert Cliffs 147060 Vertebrates, Fossil 185217 Biology Classification 62461 7 cbc orignew 1 ecip 20 y-gencatlg ddc 6 566.09752 G3457 0 0 0 ddc 0 566_097520000000000_G3457 0 410474 10 10 1 2019-06-17 0 566.09752 G3457 80000002631961 2019-06-17 00:00:00 2019-06-17 6