DOCSLIB.ORG

Natural History of Sea Turtles Paleontologic

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Natural History of Sea Turtles Paleontologic NATURAL HISTORY OF SEA TURTLES Genus Catapleura Genus Eochelone PALEONTOLOGIC HISTORY Genus Glarichelys Genus Puppigerus The oldest known turtle, Proganochelys dux, from Genus Tasbacka the Triassic had already acquired all essential turtle Subfamily Syllominae features (order Chelonia) including retaining some Genus ?Bryochelys primitive features such as vestigial teeth (Roemer, Genus Kurobechelys 1959; Obst, 1988: 74). Sea turtles had evolved by Genus Syllomus Cretaceous time and are represented by forms such as Subfamily Cheloniinae Archelon ischyros (Roemer 1959; Obst, 1988: 79) Genus Caretta (Fig. 29) with carapace lengths of up to 3 m and (Loggerhead Turtle) flipper spans of 5 m. The Protostegids originated in C. caretta the Early Cretaceous and survived until the Genus Carolinochelys Oligocene (Obst, 1988:79; Kear and Lee, 2006). The Genus Chelonia Toxochelids range from the Late Cretaceous into the Green Turtle; Tertiary in North America (Obst,1988:79). The C. mydas Dermochelids originated in the Cretaceous, but are &Black Turtle; first represented by fossils in the Eocene and by the C. agassizii extant Leatherbacks in modern seas. Genus Eretmochelys Hawksbill Turtle; E. imbricata Genus Lepidochelys Kemp’s Ridley; L. kempi & Olive Ridley; L. olivacea Genus Procolpochelys Genus Natator Flatback Turtle; N. depressa Figure 29 - Archelon ischros from the Cretaceous of Superfamily Dermochelyoidea South Dakota (Black Hills Institute photograph). Family Protostegidae Subfamily Chelospharginae Weems (1988) has recently reviewed the phylogeny Genus Calcarichelys of sea turtles and reviewed their taxonomy presenting Genus Chelosphargis the following classification: Genus Reinochelys ______________________________________ Subfamily Protostegidae Table 4. Sea Turtle Classification. Genus Archelon Genus Protostega Superfamily Chelonioidea Family Dermochelyidae Family Plesiochelyidae Subfamily Desmatochelyinae Genus Plesiochelys Genus Corochelys Genus Portlandemys Genus Desmatochelys Family Toxochelyidae Subfamily Allopleuroninae Subfamily Toxochelyinae Genus Allopleuron Genus Dollochelys Genus Eosphargis Genus ?Kirgizemys Genus Glyptochelone Genus Portochelys Genus Protosphargis Genus Thinochelys Subfamily Dermochelyinae Genus Toxochelys Genus Cosmochelys Family Cheloniidae Genus Dermochelys Subfamily Osteopyginae Leatherback Turtle; Genus Erquelinnesia D. coriacea Genus Osteopygis Genus Psephoporus Genus Rhetechelys ______________________________________ Subfamily Eocheloniinae Genus Argillochelys 21 Weems recognized two major radiations of sea turtles, one in the Late Cretaceous involving the Toxochelyidae, Protostegidae, and Dermochelyidae; and another in the Paleocene involving the Cheloniidae. A general trend of sea turtle diversity seems to correlate with average deep ocean temperature. It should be noted that the number of known species of sea turtles through geological history is about six species with a maximum of fifteen species during the Late Cretaceous. Two groups of sea turtles are extant today, those belonging to the Cheloniidae (Loggerhead (Fig. 30), Figure 30 - Loggerhead sea turtle crawling back Green, Hawksbill, and Ridleys), and the to ocean after nesting on St. Catherines Island. Dermochelyidae (Leatherback). Only one suite of sea turtle nesting structures is now The leatherback sea turtles represent an ancient known from the fossil record (Bishop et al., 2000) lineage which probably ranges back into the These data from the Recent will be used as the Cretaceous Period and represents quite a primitive foundation to search for turtle trace fossils possibly creature (Eckert, 1992: 32), but one adapted preserved in the sedimentary record (Kear et al., beautifully to its mode of life. Leatherbacks are now 2003). in rapid decline as evidenced by a 90% reduction in nesting observed in the Pacific Basin. Eckert, 1992, The charismatic nature of sea turtles, their documents a decline in Terengganu, Western endangered status, extensive geologic history, and Malaysia from 11,000 nests in 1956 to 280 in 1990]. cosmopolitan distribution makes them significant Much, if not all, of this decline can be ascribed to organisms to study and conserve while providing an human activities. Autopsies of Leatherbacks indicate excellent vehicle to use as a model for teaching field that 40-50% of then have ingested plastic items such geology and the scientific method of investigation. as balloons or bags and many are entangled in monofiliment line. In spite of this, Mexico apparently plans to develop a commercial fishery for IDENTIFICATION VIA TAXONOMIC KEY Leatherbacks on their Pacific coast, the last stronghold of Leatherbacks (Eckert, 1992: 32). The species of sea turtles which are encountered on the Georgia Coast include the Loggerhead Turtle In today’s seas seven species of Chelonid sea turtles (Caretta caretta), the Green Turtle (Chelonia remain extant, although seriously endangered. The mydas), the Leatherback Turtle (Dermochelys estimated declines in sea turtles are significant, coriacea), Kemps Ridley Turtle (Lepidochelys Kemp’s Ridleys from 40,000 nesting females in 1947 kempi), and the Hawksbill Turtle (Eretmochelys to several hundred today (Pritchard,1989: 49). The imbricata). These turtles are similar in gross nesting of loggerheads on Jekyll and Cumberland morphology but can be differentiated by use of a Islands has decreased dramatically with a significant taxonomic key (Anom.): downturn in the early 1970’s. ______________________________________ Table 5. Identification of Sea Turtles Indications of nesting trends in Florida indicated in 2006 that this more southern rookery has rapidly 1. Leathery shell - Leatherback decreased (by 25%) in number of nests since 2000. 2. Shell with horny scutes- 3. One pair of scales between eyes Loggerhead sea turtles nesting on Georgia’s beaches Green Turtle differ genetically from those in Florida and probably 4. Two pairs of scales between eyes- represent a distinct northern sub-population of this 5. Four pairs of lateral scutes(imbricated scutes) endangered species. This northern population is Hawksbill much smaller and more endangered than a larger 6. More than four pairs of lateral scutes southern population nesting in Florida. We still 7. Red-Brown Color - Loggerhead know very little about loggerhead sea turtle biology, 8. Gray-Olive Color- ecology and behavior. Knowledge gained on St. 9. Five pairs of lateral scutes Atlantic Ridley Catherines Island could lead to better management of 10. More than five pairs of lateral scutes nesting habitat on urbanized sea islands. Pacific Ridley 22 .
Load more

Recommended publications
  • Tagged Kemp's Ridley Sea Turtle
    Opinions expressedherein are those of the individual authors and do not necessar- ily representthe views of the TexasARM UniversitySea Grant College Program or the National SeaGrant Program.While specificproducts have been identified by namein various papers,this doesnot imply endorsementby the publishersor the sponsors. $20.00 TAMU-SG-89-1 05 Copies available from: 500 August 1989 Sca Grant College Program NA85AA-D-SG128 Texas ARM University A/I-I P.O. Box 1675 Galveston, Tex. 77553-1675 Proceedings of the First International Symposium on Kemp's Ridley Sea Turtle Biology, Conservation and Management ~88<!Mgpgyp Sponsors- ~88gf-,-.g,i " ' .Poslfpq National Marine Fisheries Service Southeast Fisheries Center Galveston Laboratory Departmentof Marine Biology Texas A&M University at Galveston October 1-4, 1985 Galveston, Texas Edited and updated by Charles W. Caillouet, Jr. National Marine Fisheries Service and Andre M. Landry, Jr. Texas A&M University at Galveston NATIONALSEA GRANT DEPOSITORY PELLLIBRARY BUILDING TAMU-~9 I05 URI,NARRAGANSETT BAYCAMPUS August 7989 NARRAGANSETI, R I02882 Publicationof this documentpartially supportedby Institutional GrantNo. NA85AA-D-SGI28to the TexasARM UniversitySea Grant CollegeProgram by the NationalSea Grant Program,National Oceanicand AtmosphericAdministration, Department of Commerce. jbr Carole Hoover Allen and HEART for dedicatedefforts tmuard Kemp'sridley sea turtle conservation Table of Conteuts .v Preface CharlesW. Caillouet,jr. and Andre M. Landry, Jr, Acknowledgements. vl SessionI -Historical
    [Show full text]
  • Post-Cranial Skeleton of Eosphargis Breineri NIELSEN
    On the post-cranial skeleton of Eosphargis breineri NIELSEN. By EIGIL NIELSEN CONTENTS Preface 281 Introduction 282 Eosphargis breineri NIELSEN 283 Material and locality 283 Measurements 283 Skull 284 Vertebral column 284 Carapace 284 Plastron .291 Shoulder girdle 294 Fore-limb 296 Pelvis 303 Hind-limb 307 Remnants of soft tissues 308 Remarks on the relationship of Eosphargis 308 Literature 313 Plates 314 Preface. From the outstanding collector of fossils from the Lower Eocene marine mo clay deposits in Northern Jutland, Mr. M. BREINER JENSEN, leader of the Fur museum, I have received both in 1959 and 1960 for investiga- tion further remnants of turtles from the locality at Knudeklint on the island of Fur, where Mr. BREINEB. JENSEN in 1957 collected the almost complete skull of Eosphargis breineri NIELSEN described by me in 1959. I owe Mr. BREINER JENSEN a sincere thank for the permission to investigate also this new important material, the tedious preparation of which has been carried out in the laboratory of vertebrate paleontology in the Mineralogical and Geological Museum of the University of Copen- hagen mainly by stud. mag. BENTE SOLTAU, who also is responsible for the photographs in this paper. I hereby thank Mrs SOLTAU for her carefull work. Moreover I thank the artists Mrs BETTY ENGHOLM and Mrs RAGNA LARSEN who have drawn the text-figures, as well as stud. mag. SVEND 21 282 EIGIL NIELSEN : On the post-cranial skeleton of Eosphargis breineri NIELSEN E. B.-ALMGREEN, who in various ways has assisted in the finishing the illustrations. To the CARLSBERG FOUNDATION my thanks are due for financial support to the work of preparation and illustration of the material and to the RASK ØRSTED FOUNDATION for financial support to the reproduction of the illustrations.
    [Show full text]
  • The Endoskeletal Origin of the Turtle Carapace
    ARTICLE Received 7 Dec 2012 | Accepted 3 Jun 2013 | Published 9 Jul 2013 DOI: 10.1038/ncomms3107 OPEN The endoskeletal origin of the turtle carapace Tatsuya Hirasawa1, Hiroshi Nagashima2 & Shigeru Kuratani1 The turtle body plan, with its solid shell, deviates radically from those of other tetrapods. The dorsal part of the turtle shell, or the carapace, consists mainly of costal and neural bony plates, which are continuous with the underlying thoracic ribs and vertebrae, respectively. Because of their superficial position, the evolutionary origins of these costo-neural elements have long remained elusive. Here we show, through comparative morphological and embryological analyses, that the major part of the carapace is derived purely from endos- keletal ribs. We examine turtle embryos and find that the costal and neural plates develop not within the dermis, but within deeper connective tissue where the rib and intercostal muscle anlagen develop. We also examine the fossils of an outgroup of turtles to confirm that the structure equivalent to the turtle carapace developed independently of the true osteoderm. Our results highlight the hitherto unravelled evolutionary course of the turtle shell. 1 Laboratory for Evolutionary Morphology, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan. 2 Division of Gross Anatomy and Morphogenesis, Department of Regenerative and Transplant Medicine, Niigata University, Niigata 951-8510, Japan. Correspondence and requests for materials should be addressed to T.H. (email: [email protected]). NATURE COMMUNICATIONS | 4:2107 | DOI: 10.1038/ncomms3107 | www.nature.com/naturecommunications 1 & 2013 Macmillan Publishers Limited. All rights reserved. ARTICLE NATURE COMMUNICATIONS | DOI: 10.1038/ncomms3107 wo types of skeletal systems are recognized in vertebrates, exoskeletal components into the costal and neural plates (Fig.
    [Show full text]
  • A Phylogenomic Analysis of Turtles ⇑ Nicholas G
    Molecular Phylogenetics and Evolution 83 (2015) 250–257 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev A phylogenomic analysis of turtles ⇑ Nicholas G. Crawford a,b,1, James F. Parham c, ,1, Anna B. Sellas a, Brant C. Faircloth d, Travis C. Glenn e, Theodore J. Papenfuss f, James B. Henderson a, Madison H. Hansen a,g, W. Brian Simison a a Center for Comparative Genomics, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA 94118, USA b Department of Genetics, University of Pennsylvania, Philadelphia, PA 19104, USA c John D. Cooper Archaeological and Paleontological Center, Department of Geological Sciences, California State University, Fullerton, CA 92834, USA d Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA e Department of Environmental Health Science, University of Georgia, Athens, GA 30602, USA f Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720, USA g Mathematical and Computational Biology Department, Harvey Mudd College, 301 Platt Boulevard, Claremont, CA 9171, USA article info abstract Article history: Molecular analyses of turtle relationships have overturned prevailing morphological hypotheses and Received 11 July 2014 prompted the development of a new taxonomy. Here we provide the first genome-scale analysis of turtle Revised 16 October 2014 phylogeny. We sequenced 2381 ultraconserved element (UCE) loci representing a total of 1,718,154 bp of Accepted 28 October 2014 aligned sequence. Our sampling includes 32 turtle taxa representing all 14 recognized turtle families and Available online 4 November 2014 an additional six outgroups. Maximum likelihood, Bayesian, and species tree methods produce a single resolved phylogeny.
    [Show full text]
  • Membros Da Comissão Julgadora Da Dissertação
    UNIVERSIDADE DE SÃO PAULO FACULDADE DE FILOSOFIA, CIÊNCIAS E LETRAS DE RIBEIRÃO PRETO PROGRAMA DE PÓS-GRADUAÇÃO EM BIOLOGIA COMPARADA Evolution of the skull shape in extinct and extant turtles Evolução da forma do crânio em tartarugas extintas e viventes Guilherme Hermanson Souza Dissertação apresentada à Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo, como parte das exigências para obtenção do título de Mestre em Ciências, obtido no Programa de Pós- Graduação em Biologia Comparada Ribeirão Preto - SP 2021 UNIVERSIDADE DE SÃO PAULO FACULDADE DE FILOSOFIA, CIÊNCIAS E LETRAS DE RIBEIRÃO PRETO PROGRAMA DE PÓS-GRADUAÇÃO EM BIOLOGIA COMPARADA Evolution of the skull shape in extinct and extant turtles Evolução da forma do crânio em tartarugas extintas e viventes Guilherme Hermanson Souza Dissertação apresentada à Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo, como parte das exigências para obtenção do título de Mestre em Ciências, obtido no Programa de Pós- Graduação em Biologia Comparada. Orientador: Prof. Dr. Max Cardoso Langer Ribeirão Preto - SP 2021 Autorizo a reprodução e divulgação total ou parcial deste trabalho, por qualquer meio convencional ou eletrônico, para fins de estudo e pesquisa, desde que citada a fonte. I authorise the reproduction and total or partial disclosure of this work, via any conventional or electronic medium, for aims of study and research, with the condition that the source is cited. FICHA CATALOGRÁFICA Hermanson, Guilherme Evolution of the skull shape in extinct and extant turtles, 2021. 132 páginas. Dissertação de Mestrado, apresentada à Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto/USP – Área de concentração: Biologia Comparada.
    [Show full text]
  • Glarichelys Knorri (Gray)-A Cheloniid from Carpathian Menilitic Shales (Poland)
    ACT A P A L A E 0 ~ T 0 LOG I CA P 0 LON IC A Vol. IV I 9 5 9 No . 2 MARIAN MLYN ARSKI GLARICHELYS KNORRI (GRAY) - A CHELONIID FROM CARPATHIAN MENILITIC SHALES (POLAND) Abstract . - The fossil remains here described belonged to a young indiv id ual of Glarichelys knorri (Gray), a sea turtle. They were collected from Carpathian me­ nilitic shales at Winnica near Jaslo. Its systematic position is discussed a nd general comments are made on some fossil and recent sea turtles, on problems concerning their mo rphology, on the taxonomic significance of p halanges in fossil sea turtles, a nd on the presence in cheloniids of foramina praenucha lia. Biological and ecological notes concernin g G. knorri (Gray) are likewise given. INTRODUCTlION The fossil sea turtle remains here described have been collected from an outcrop in the steep bank of the Jasiolka stream, near the Winnica farm, about 10 km to the east of Jaslo (P olish Carpathians). The specimen was found in greyish-brown menilitic shales intercalating the Kr osno sandstone beds, about 30 m above the foot of the men tioned bank. Unfortunately, the geological age of these beds has not, as yet, been definitely established. On their microfauna it is probably Lower Oligocene or Upper Eocene 1. The vertebrate fauna from the Jaslo area has lately attracted the attention of palaeontologists. Abundant and we ll preserved bon y fish remains have been collected there.They belong to several families, mostly to Clupeidae and Gadidae. They are n ow being worked out by A .J erz­ manska (1958) of the Wroclaw University.
    [Show full text]
  • On Certain Portions of the Skeleton of Protostega Gigas
    f %VJ*p^V;^.:H ^^BSdm^% ''Sv ; ^^v;Vv: , ^ ^fc;iS^^ BS^HK9|%^-S-r^ jftaming anb jt'alior. LIBRARY I University "of Illinois. m?; 1&:. mT"-g&K y r r * ^-v^wuiiii uiio w\ji\. mi \ji UCiUl'T^ tile * Latest Date stamped below. A i charge is made on all overdue b kS - U. of I. Library FIELD COLUMBIAN MUSEUM PUBLICATION 7. ZOOLOGICAL SERIES. VOL. i, No. 2. ON CERTAIN PORTIONS OF THE SKELETON OF PROTOSTEGA GIGAS. BY O. P. HAY, PH. D., Assistant Curator of Ichthyology. D. G. ELLIOT, F. R. S. E., Curator of Department. CHICAGO, U. S. A. November 21, 1895, ON CERTAIN PORTIONS OF THE SKELETON OF PROTOS- TEGA GIGAS COPE. O. P. HAY. The Dermochelyoid turtle, Protostega gigas, was first described by Professor E. D. Cope in Proc. Amer. Phil. Soc., 1-871, page 172, and again in the same publication in 1872, page 403. In 1875, m n ^ s ''Cretaceous Vertebrata," pp. 99-113, pis. IX-XIII, the same writer more fully described and illustrated the structure of this remarkable reptile. The materials which were in Professor Cope's hands consisted of a number of vertebrae, ten ribs, some marginal bones, certain por- tions of the skull, some limb bones, and some large plates. Of the lat- ter there were what the describer regarded as two entire and parts of one or two others. These plates he considered as belonging to the carapace, and this was supposed to be free from the ribs, as the pecu- liar carapace otDermochelys is free from the ribs of that turtle.
    [Show full text]
  • Universidad Nacional Del Comahue Centro Regional Universitario Bariloche
    Universidad Nacional del Comahue Centro Regional Universitario Bariloche Título de la Tesis Microanatomía y osteohistología del caparazón de los Testudinata del Mesozoico y Cenozoico de Argentina: Aspectos sistemáticos y paleoecológicos implicados Trabajo de Tesis para optar al Título de Doctor en Biología Tesista: Lic. en Ciencias Biológicas Juan Marcos Jannello Director: Dr. Ignacio A. Cerda Co-director: Dr. Marcelo S. de la Fuente 2018 Tesis Doctoral UNCo J. Marcos Jannello 2018 Resumen Las inusuales estructuras óseas observadas entre los vertebrados, como el cuello largo de la jirafa o el cráneo en forma de T del tiburón martillo, han interesado a los científicos desde hace mucho tiempo. Uno de estos casos es el clado Testudinata el cual representa uno de los grupos más fascinantes y enigmáticos conocidos entre de los amniotas. Su inconfundible plan corporal, que ha persistido desde el Triásico tardío hasta la actualidad, se caracteriza por la presencia del caparazón, el cual encierra a las cinturas, tanto pectoral como pélvica, dentro de la caja torácica desarrollada. Esta estructura les ha permitido a las tortugas adaptarse con éxito a diversos ambientes (por ejemplo, terrestres, acuáticos continentales, marinos costeros e incluso marinos pelágicos). Su capacidad para habitar diferentes nichos ecológicos, su importante diversidad taxonómica y su plan corporal particular hacen de los Testudinata un modelo de estudio muy atrayente dentro de los vertebrados. Una disciplina que ha demostrado ser una herramienta muy importante para abordar varios temas relacionados al caparazón de las tortugas, es la paleohistología. Esta disciplina se ha involucrado en temas diversos tales como el origen del caparazón, el origen del desarrollo y mantenimiento de la ornamentación, la paleoecología y la sistemática.
    [Show full text]
  • Osseous Growth and Skeletochronology
    Comparative Ontogenetic 2 and Phylogenetic Aspects of Chelonian Chondro- Osseous Growth and Skeletochronology Melissa L. Snover and Anders G.J. Rhodin CONTENTS 2.1 Introduction ........................................................................................................................... 17 2.2 Skeletochronology in Turtles ................................................................................................ 18 2.2.1 Background ................................................................................................................ 18 2.2.1.1 Validating Annual Deposition of LAGs .......................................................20 2.2.1.2 Resorption of LAGs .....................................................................................20 2.2.1.3 Skeletochronology and Growth Lines on Scutes ......................................... 21 2.2.2 Application of Skeletochronology to Turtles ............................................................. 21 2.2.2.1 Freshwater Turtles ........................................................................................ 21 2.2.2.2 Terrestrial Turtles ......................................................................................... 21 2.2.2.3 Marine Turtles .............................................................................................. 21 2.3 Comparative Chondro-Osseous Development in Turtles......................................................22 2.3.1 Implications for Phylogeny ........................................................................................32
    [Show full text]
  • Mesozoic Marine Reptile Palaeobiogeography in Response to Drifting Plates
    ÔØ ÅÒÙ×Ö ÔØ Mesozoic marine reptile palaeobiogeography in response to drifting plates N. Bardet, J. Falconnet, V. Fischer, A. Houssaye, S. Jouve, X. Pereda Suberbiola, A. P´erez-Garc´ıa, J.-C. Rage, P. Vincent PII: S1342-937X(14)00183-X DOI: doi: 10.1016/j.gr.2014.05.005 Reference: GR 1267 To appear in: Gondwana Research Received date: 19 November 2013 Revised date: 6 May 2014 Accepted date: 14 May 2014 Please cite this article as: Bardet, N., Falconnet, J., Fischer, V., Houssaye, A., Jouve, S., Pereda Suberbiola, X., P´erez-Garc´ıa, A., Rage, J.-C., Vincent, P., Mesozoic marine reptile palaeobiogeography in response to drifting plates, Gondwana Research (2014), doi: 10.1016/j.gr.2014.05.005 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ACCEPTED MANUSCRIPT Mesozoic marine reptile palaeobiogeography in response to drifting plates To Alfred Wegener (1880-1930) Bardet N.a*, Falconnet J. a, Fischer V.b, Houssaye A.c, Jouve S.d, Pereda Suberbiola X.e, Pérez-García A.f, Rage J.-C.a and Vincent P.a,g a Sorbonne Universités CR2P, CNRS-MNHN-UPMC, Département Histoire de la Terre, Muséum National d’Histoire Naturelle, CP 38, 57 rue Cuvier,
    [Show full text]
  • As an Indeterminate Plesiochelyid Turtle
    Reinterpretation of the Spanish Late Jurassic “Hispaniachelys prebetica” as an indeterminate plesiochelyid turtle Adán Pérez-García Acta Palaeontologica Polonica 59 (4), 2014: 879-885 doi: http://dx.doi.org/10.4202/app.2012.0115 A partial postcranial skeleton (carapace, plastron, and other poorly preserved elements) of a turtle, from the late Oxfordian of the Betic Range of Spain, has recently been assigned to a new taxon, Hispaniachelys prebetica. This is one of the few European turtle taxa reported from pre-Kimmeridgian levels, and the oldest turtle so far known from southern Europe. The character combination identified in that taxon (including the presence of cleithra, and single cervical scale) did not allow its assignment to Plesiochelyidae, a group of turtles very abundant and diverse in the Late Jurassic of Europe. The revision of the single specimen assigned to this taxon led to the reinterpretation of some of its elements, being reassigned to Plesiochelyidae. This study confirms the presence of Plesiochelyidae in the Oxfordian. However, because the Spanish taxon does not present a unique combination of characters, it is proposed as a nomen dubium. Key words: Testudines, Plesiochelyidae, “Hispaniachelys prebetica”, Oxfordian, Jurassic, Spain. Adán Pérez-García [[email protected]], Centro de Geologia, Faculdade de Ciências da Universidade de Lisboa (FCUL), Edificio C6, Campo Grande, 1749-016 Lisbon, Portugal; Grupo de Biología Evolutiva, Facultad de Ciencias, UNED, C/ Senda del Rey, 9, 28040 Madrid, Spain. This is an open-access article distributed under the terms of the Creative Commons Attribution License (for details please see creativecommons.org), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
    [Show full text]
  • The Turtles from the Upper Eocene, Osona County (Ebro Basin, Catalonia, Spain): New Material and Its Faunistic and Environmental Context
    Foss. Rec., 21, 237–284, 2018 https://doi.org/10.5194/fr-21-237-2018 © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. The turtles from the upper Eocene, Osona County (Ebro Basin, Catalonia, Spain): new material and its faunistic and environmental context France de Lapparent de Broin1, Xabier Murelaga2, Adán Pérez-García3, Francesc Farrés4, and Jacint Altimiras4 1Centre de Recherches sur la Paléobiodiversité et les Paléoenvironnements (CR2P: MNHN, CNRS, UPMC-Paris 6), Muséum national d’Histoire naturelle, Sorbonne Université, 57 rue Cuvier, CP 38, 75231 Paris CEDEX 5, France 2Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, UPV/EHU, Sarrienea s/n, 48940 Leioa, Spain 3Grupo de Biología Evolutiva, Facultad de Ciencias, UNED, Paseo de la Senda del Rey 9, 28040 Madrid, Spain 4Museu Geològic del Seminari de Barcelona, Diputacio 231, 08007 Barcelona – Geolab Vic, Spain Correspondence: France de Lapparent de Broin ([email protected]) Received: 8 November 2017 – Revised: 9 August 2018 – Accepted: 16 August 2018 – Published: 28 September 2018 Abstract. Eochelone voltregana n. sp. is a new marine 1 Introduction cryptodiran cheloniid found at the Priabonian levels (latest Eocene) of the Vespella marls member of the Vic–Manlleu 1.1 The cycle of Osona turtle study marls formation. It is the second cheloniid from Santa Cecília de Voltregà (Osona County, Spain), the first one being Os- The present examination closes a study cycle of turtle ma- onachelus decorata from the same formation. Shell parame- terial from the upper Eocene sediments of the area of Vic ters indicate that the new species belongs to a branch of sea in the Osona comarca (county) (Barcelona province, Catalo- turtles including the Eocene Anglo–Franco–Belgian forms nia, Spain) (Fig.
    [Show full text]