An Annotated Check-List of Genera and Species of Carpoids Lista Anotada De Los Géneros Y Especies De Carpoideos
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A Probable Case of Heterochrony in the Solutan
A probable case of heterochrony in the solutan Dendrocystites Barrande, 1887 (Echinodermata: Blastozoa) from the Upper Ordovician of the Prague Basin (Czech Republic) and a revision of the family Dendrocystitidae Bassler, 1938 FLEUR NOAILLES, BERTRAND LEFEBVRE & LIBOR KAIÈKA The morphology of the Late Ordovician solutan Dendrocystites is reevaluated based on more than 300 specimens from the Letná and Zahořany formations (Prague Basin, Czech Republic). This genus is reported for the first time from the Bohdalec Formation, and its presence is confirmed in the Vinice Formation. The morphology of all specimens of the stratigraphically older species D. barrandei (Sandbian) is identical to that of small to medium-size individuals of D. sedgwicki (Katian). Distinctive characters of D. sedgwicki occur only in the largest specimens, and are all size-related (more asymmetrical thecal outlines, stronger ornamentation, rosetting pattern of thecal plates, proliferation of platelets in the proxistele). Consequently, the transition from D. barrandei to D. sedgwicki is interpreted as the result of heterochronic processes, with the largest individuals of D. sedgwicki displaying hyperadult morphologies (hyper- morphosis). Dendrocystites is locally abundant in both the Letná and Zahořany formations, but extremely rare in the deeper deposits of the Vinice and Bohdalec formations. This pattern coincides closely with first order fluctuations of the sea-level in the Prague Basin. The life orientation and implied feeding strategy of Dendrocystites and other solutans are both critically discussed. Several independent lines of evidence suggest that solutans were more likely detritus-feeders. Finally, it is proposed that two morphologically distinct patterns of dististele organization were elaborated independently from the polyplated, undifferentiated stalk-like appendage of Coleicarpus (plesiomorphic condition). -
Contributions in BIOLOGY and GEOLOGY
MILWAUKEE PUBLIC MUSEUM Contributions In BIOLOGY and GEOLOGY Number 51 November 29, 1982 A Compendium of Fossil Marine Families J. John Sepkoski, Jr. MILWAUKEE PUBLIC MUSEUM Contributions in BIOLOGY and GEOLOGY Number 51 November 29, 1982 A COMPENDIUM OF FOSSIL MARINE FAMILIES J. JOHN SEPKOSKI, JR. Department of the Geophysical Sciences University of Chicago REVIEWERS FOR THIS PUBLICATION: Robert Gernant, University of Wisconsin-Milwaukee David M. Raup, Field Museum of Natural History Frederick R. Schram, San Diego Natural History Museum Peter M. Sheehan, Milwaukee Public Museum ISBN 0-893260-081-9 Milwaukee Public Museum Press Published by the Order of the Board of Trustees CONTENTS Abstract ---- ---------- -- - ----------------------- 2 Introduction -- --- -- ------ - - - ------- - ----------- - - - 2 Compendium ----------------------------- -- ------ 6 Protozoa ----- - ------- - - - -- -- - -------- - ------ - 6 Porifera------------- --- ---------------------- 9 Archaeocyatha -- - ------ - ------ - - -- ---------- - - - - 14 Coelenterata -- - -- --- -- - - -- - - - - -- - -- - -- - - -- -- - -- 17 Platyhelminthes - - -- - - - -- - - -- - -- - -- - -- -- --- - - - - - - 24 Rhynchocoela - ---- - - - - ---- --- ---- - - ----------- - 24 Priapulida ------ ---- - - - - -- - - -- - ------ - -- ------ 24 Nematoda - -- - --- --- -- - -- --- - -- --- ---- -- - - -- -- 24 Mollusca ------------- --- --------------- ------ 24 Sipunculida ---------- --- ------------ ---- -- --- - 46 Echiurida ------ - --- - - - - - --- --- - -- --- - -- - - --- -
Reinterpretation of the Enigmatic Ordovician Genus Bolboporites (Echinodermata)
Reinterpretation of the enigmatic Ordovician genus Bolboporites (Echinodermata). Emeric Gillet, Bertrand Lefebvre, Véronique Gardien, Emilie Steimetz, Christophe Durlet, Frédéric Marin To cite this version: Emeric Gillet, Bertrand Lefebvre, Véronique Gardien, Emilie Steimetz, Christophe Durlet, et al.. Reinterpretation of the enigmatic Ordovician genus Bolboporites (Echinodermata).. Zoosymposia, Magnolia Press, 2019, 15 (1), pp.44-70. 10.11646/zoosymposia.15.1.7. hal-02333918 HAL Id: hal-02333918 https://hal.archives-ouvertes.fr/hal-02333918 Submitted on 13 Nov 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. 1 Reinterpretation of the Enigmatic Ordovician Genus Bolboporites 2 (Echinodermata) 3 4 EMERIC GILLET1, BERTRAND LEFEBVRE1,3, VERONIQUE GARDIEN1, EMILIE 5 STEIMETZ2, CHRISTOPHE DURLET2 & FREDERIC MARIN2 6 7 1 Université de Lyon, UCBL, ENSL, CNRS, UMR 5276 LGL-TPE, 2 rue Raphaël Dubois, F- 8 69622 Villeurbanne, France 9 2 Université de Bourgogne - Franche Comté, CNRS, UMR 6282 Biogéosciences, 6 boulevard 10 Gabriel, F-2100 Dijon, France 11 3 Corresponding author, E-mail: [email protected] 12 13 Abstract 14 Bolboporites is an enigmatic Ordovician cone-shaped fossil, the precise nature and systematic affinities of 15 which have been controversial over almost two centuries. -
The Weeks Formation Konservat-Lagerstätte and the Evolutionary Transition of Cambrian Marine Life
Downloaded from http://jgs.lyellcollection.org/ by guest on October 1, 2021 Review focus Journal of the Geological Society Published Online First https://doi.org/10.1144/jgs2018-042 The Weeks Formation Konservat-Lagerstätte and the evolutionary transition of Cambrian marine life Rudy Lerosey-Aubril1*, Robert R. Gaines2, Thomas A. Hegna3, Javier Ortega-Hernández4,5, Peter Van Roy6, Carlo Kier7 & Enrico Bonino7 1 Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia 2 Geology Department, Pomona College, Claremont, CA 91711, USA 3 Department of Geology, Western Illinois University, 113 Tillman Hall, 1 University Circle, Macomb, IL 61455, USA 4 Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK 5 Museum of Comparative Zoology and Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA 6 Department of Geology, Ghent University, Krijgslaan 281/S8, B-9000 Ghent, Belgium 7 Back to the Past Museum, Carretera Cancún, Puerto Morelos, Quintana Roo 77580, Mexico R.L.-A., 0000-0003-2256-1872; R.R.G., 0000-0002-3713-5764; T.A.H., 0000-0001-9067-8787; J.O.-H., 0000-0002- 6801-7373 * Correspondence: [email protected] Abstract: The Weeks Formation in Utah is the youngest (c. 499 Ma) and least studied Cambrian Lagerstätte of the western USA. It preserves a diverse, exceptionally preserved fauna that inhabited a relatively deep water environment at the offshore margin of a carbonate platform, resembling the setting of the underlying Wheeler and Marjum formations. However, the Weeks fauna differs significantly in composition from the other remarkable biotas of the Cambrian Series 3 of Utah, suggesting a significant Guzhangian faunal restructuring. -
The Fossil Record of the Cambrian “Explosion”: Resolving the Tree of Life Critics As Posing Challenges to Evolution
Article The Fossil Record of the Cambrian “Explosion”: 1 Resolving the Tree of Life Keith B. Miller Keith B. Miller The Cambrian “explosion” has been the focus of extensive scientifi c study, discussion, and debate for decades. It has also received considerable attention by evolution critics as posing challenges to evolution. In the last number of years, fossil discoveries from around the world, and particularly in China, have enabled the reconstruction of many of the deep branches within the invertebrate animal tree of life. Fossils representing “sister groups” and “stem groups” for living phyla have been recognized within the latest Precambrian (Neoproterozoic) and Cambrian. Important transitional steps between living phyla and their common ancestors are preserved. These include the rise of mollusks from their common ancestor with the annelids, the evolution of arthropods from lobopods and priapulid worms, the likely evolution of brachiopods from tommotiids, and the rise of chordates and echinoderms from early deuterostomes. With continued new discoveries, the early evolutionary record of the animal phyla is becoming ever better resolved. The tree of life as a model for the diversifi cation of life over time remains robust, and strongly supported by the Neoproterozoic and Cambrian fossil record. he most fundamental claim of bio- (such as snails, crabs, or sea urchins) as it logical evolution is that all living does to the fi rst appearance and diversi- T organisms represent the outer tips fi cation of dinosaurs, birds, or mammals. of a diversifying, upward- branching tree This early diversifi cation of invertebrates of life. The “Tree of Life” is an extreme- apparently occurred around the time of ly powerful metaphor that captures the the Precambrian/Cambrian boundary over essence of evolution. -
Paleontological Contributions
THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS July 14, 1988 Paper 120 HOMALOZOAN ECHINODERMS OF THE WHEELER FORMATION (MIDDLE CAMBRIAN) OF WESTERN UTAH' Georges Ubaghs and R. A. Robison Laboratoire de Paléontologie Animale, Université de Liége, B-4000, Liége, Belgium Department of Geology, The University of Kansas, Lawrence, Kansas 66045 Abstract. —Three new species, representing three of the four homalozoan classes, are described from the upper Wheeler Formation of middle Middle Cambrian age in west- central Utah. Ctenocystis colodon n. sp. is only the fifth species of Ctenocystoidea to be described. The new order Ctenocystida is defined. The solutan Castericystis? sprinklei n. sp. is the fifth species of Homoiostelea to be reported from Cambrian strata. The cornute Cothurnocystis? bifida n. sp. is the fifth species of Stylophora to be reported from Middle Cambrian strata worldwide and only the second from North America. This homalozoan fauna is among the most diverse known from any Cambrian formation. AMONG ECHINODERMS, homalozoans are un House Range, and the stylophoran Cothur- usual in their complete lack of radial symmetry. nocystis? bifida from the House Range. Representatives are relatively rare, especially in Each homalozoan species in the Wheeler Cambrian strata. Three new Cambrian spe- Formation is from a different locality. Such low cies, which represent three of the four homa- diversity is typical of most Cambrian echi- lozoan classes, are described here. All are noderm faunas, although locally each species from the upper Wheeler Formation of west- may be represented by numerous individuals. central Utah and include the ctenocystoid For several years, knowledge of the class Ctenocystis colodon from the Drum Mountains, Ctenocystoidea was limited to the single species the homoiostelean Castericystis? sprinklei from the Ctenocystis utahensis Robison and Sprinkle, 1969, which is locally abundant in the Spence Shale of Manuscript received 15 November 1987. -
Ordovician Stratigraphy and Benthic Community Replacements in the Eastern Anti-Atlas, Morocco J
Ordovician stratigraphy and benthic community replacements in the eastern Anti-Atlas, Morocco J. Javier Alvaro, Mohammed Benharref, Jacques Destombes, Juan Carlos Gutiérrez-Marco, Aaron Hunter, Bertrand Lefebvre, Peter van Roy, Samuel Zamora To cite this version: J. Javier Alvaro, Mohammed Benharref, Jacques Destombes, Juan Carlos Gutiérrez-Marco, Aaron Hunter, et al.. Ordovician stratigraphy and benthic community replacements in the eastern Anti- Atlas, Morocco. The Great Ordovician Biodiversification Event: Insights from the Tafilalt Biota, Morocco, 485, The Geological Society of London, pp.SP485.20, In press, Geological Society, London, Special Publication, 10.1144/SP485.20. hal-02405970 HAL Id: hal-02405970 https://hal.archives-ouvertes.fr/hal-02405970 Submitted on 13 Nov 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. The Geological Society Special Publications Ordovician stratigraphy and benthic community replacements in the eastern Anti-Atlas, Morocco --Manuscript Draft-- Manuscript Number: GSLSpecPub2019-17R1 Article Type: Research article Full Title: Ordovician stratigraphy and benthic community replacements in the eastern Anti-Atlas, Morocco Short Title: Ordovician stratigraphy of the Anti-Atlas Corresponding Author: Javier Alvaro Instituto de Geociencias SPAIN Corresponding Author E-Mail: [email protected] Other Authors: MOHAMMED BENHARREF JACQUES DESTOMBES JUAN CARLOS GUTIÉRREZ-MARCO AARON W. -
The Early History of the Metazoa—A Paleontologist's Viewpoint
ISSN 20790864, Biology Bulletin Reviews, 2015, Vol. 5, No. 5, pp. 415–461. © Pleiades Publishing, Ltd., 2015. Original Russian Text © A.Yu. Zhuravlev, 2014, published in Zhurnal Obshchei Biologii, 2014, Vol. 75, No. 6, pp. 411–465. The Early History of the Metazoa—a Paleontologist’s Viewpoint A. Yu. Zhuravlev Geological Institute, Russian Academy of Sciences, per. Pyzhevsky 7, Moscow, 7119017 Russia email: [email protected] Received January 21, 2014 Abstract—Successful molecular biology, which led to the revision of fundamental views on the relationships and evolutionary pathways of major groups (“phyla”) of multicellular animals, has been much more appre ciated by paleontologists than by zoologists. This is not surprising, because it is the fossil record that provides evidence for the hypotheses of molecular biology. The fossil record suggests that the different “phyla” now united in the Ecdysozoa, which comprises arthropods, onychophorans, tardigrades, priapulids, and nemato morphs, include a number of transitional forms that became extinct in the early Palaeozoic. The morphology of these organisms agrees entirely with that of the hypothetical ancestral forms reconstructed based on onto genetic studies. No intermediates, even tentative ones, between arthropods and annelids are found in the fos sil record. The study of the earliest Deuterostomia, the only branch of the Bilateria agreed on by all biological disciplines, gives insight into their early evolutionary history, suggesting the existence of motile bilaterally symmetrical forms at the dawn of chordates, hemichordates, and echinoderms. Interpretation of the early history of the Lophotrochozoa is even more difficult because, in contrast to other bilaterians, their oldest fos sils are preserved only as mineralized skeletons. -
Sepkoski, J.J. 1992. Compendium of Fossil Marine Animal Families
MILWAUKEE PUBLIC MUSEUM Contributions . In BIOLOGY and GEOLOGY Number 83 March 1,1992 A Compendium of Fossil Marine Animal Families 2nd edition J. John Sepkoski, Jr. MILWAUKEE PUBLIC MUSEUM Contributions . In BIOLOGY and GEOLOGY Number 83 March 1,1992 A Compendium of Fossil Marine Animal Families 2nd edition J. John Sepkoski, Jr. Department of the Geophysical Sciences University of Chicago Chicago, Illinois 60637 Milwaukee Public Museum Contributions in Biology and Geology Rodney Watkins, Editor (Reviewer for this paper was P.M. Sheehan) This publication is priced at $25.00 and may be obtained by writing to the Museum Gift Shop, Milwaukee Public Museum, 800 West Wells Street, Milwaukee, WI 53233. Orders must also include $3.00 for shipping and handling ($4.00 for foreign destinations) and must be accompanied by money order or check drawn on U.S. bank. Money orders or checks should be made payable to the Milwaukee Public Museum. Wisconsin residents please add 5% sales tax. In addition, a diskette in ASCII format (DOS) containing the data in this publication is priced at $25.00. Diskettes should be ordered from the Geology Section, Milwaukee Public Museum, 800 West Wells Street, Milwaukee, WI 53233. Specify 3Y. inch or 5Y. inch diskette size when ordering. Checks or money orders for diskettes should be made payable to "GeologySection, Milwaukee Public Museum," and fees for shipping and handling included as stated above. Profits support the research effort of the GeologySection. ISBN 0-89326-168-8 ©1992Milwaukee Public Museum Sponsored by Milwaukee County Contents Abstract ....... 1 Introduction.. ... 2 Stratigraphic codes. 8 The Compendium 14 Actinopoda. -
Acastidae, 305 Acastidae Delo, 304–305 Acritarchs, 365 Cluster
Index Page numbers in italic denote figures. Page numbers in bold denote tables. Acastidae, 305 Asteroids, 178–179 Acastidae Delo, 304–305 Asterozoans, 177–179 acritarchs, 365 Asteroids, 178–179 cluster analysis, 387 Ophiuroids, 178 Acrocephalitidae, 325 palaeobiogeography of Ordovician echinoderms, 177–179 actinocerids, 433, 437, 440 Somasteroids, 177–178 adaptive radiation of vertebrates in Ordovician, 451–452 Astropolichnus hispanicus (Crimes, Legg, Marcos and Arboleya), 45 biogeography of Ordovician vertebrates, 451–452 Atdabanian Stage, palaeogeographical distribution, 61 climatic context of Ordovician vertebrates, 452 Aulacopleurida, 311 palaeobiogeography of Early Palaeozoic vertebrates, 451–452 Aulacopleurida Adrain, 312–317 Aeronian cluster and ordination tests, 209 Family Aulacopleuridae Angelin, 312–313 Aeronian-Telychian, 209–210 Family Bathyuridae Walcott, 313–314 Afghanistan palaeogeographical units, 279 Family Brachymetopidae Prantl & Prˇibyl, 314 Afghanodesmatids Ordovician distributions, 224 Family Dimeropygidae Hupe, 314 agnathans, 449, 455 Family Holotrachelidae Warburg, 314–315 Alai terrane Family Hystricuridae Hupe, 315 fossils, 279 Family Rorringtoniidae Owens in Owens & Hamann, 315–316 trilobite, 283–284 Family Scharysiidae Osmo´lska, 316 Alaskan areas, 213–214 Family Telephinidae Marek, 316–317 Alsataspididae, 320 synopsis of Ordovician trilobite distribution and diversity, 312–317 Alsataspididae Turner, 319–320 Aulacopleuridae Altai-Sayan area, palaeogeographical units, 276 global taxonomic richness, 313 Ambonychids, -
Les Gisements À Échinodermes De L'ordovicien Supérieur De L'anti-Atlas Oriental (Maroc) : Un Patrimoine Scientifique Exceptionnel À Préserver
Bulletin de l’Institut Scientifique, Rabat, Deuxième Rencontre sur la Valorisation et la section Sciences de la Terre, 2010, n°32, p. 1-17. Préservation du Patrimoine Paléontologique Faculté des Sciences, Meknès, 9-11 mai 2008. Les gisements à échinodermes de l'Ordovicien supérieur de l'Anti-Atlas oriental (Maroc) : un patrimoine scientifique exceptionnel à préserver Bertrand LEFEBVRE1*, Fleur NOAILLES1, Benjamin FRANZIN1, Serge REGNAULT2, Elise NARDIN3, Aaron W. HUNTER4, Samuel ZAMORA5, Peter VAN ROY6, Khadija EL HARIRI7 & Nezha LAZREQ8 1. UMR CNRS 5125 Paléoenvironnements & Paléobiosphère, Université Lyon 1, France. *e-mail: [email protected] 2. Muséum d'Histoire Naturelle, Nantes, France. 3. LMTG- Observatoire Midi-Pyrénées, Toulouse, France. 4. Department of Palaeontology, The Natural History Museum, London, Royaume-Uni. 5. Área y Museo de Paleontología, Universidad de Zaragoza, Espagne. 6. School of Geological Sciences, University College Dublin, Irlande. 7. Faculté des Sciences et Techniques, Université Cadi Ayyad, Marrakech, Maroc. 8. Faculté des Sciences Semlalia, Université Cadi Ayyad, Marrakech, Maroc. Résumé. Plusieurs Lagerstätten à échinodermes ont été découverts au cours des dix dernières années dans l’Ordovicien supérieur de l’Anti-Atlas oriental (Tafilalt occidental, Maroc). Ces niveaux ont livré des assemblages particulièrement riches et diversifiés d’échinodermes. La préservation exceptionnelle de ces organismes témoigne d’un enfouissement rapide et in situ de communautés benthiques particulièrement denses constituées quasi-exclusivement d’échinodermes. Trois assemblages sont décrits : Bou Nemrou (Sandbien basal), piste de Jorf (Sandbien supérieur) et enfin, Tizi n’Mouri (Katien supérieur). L’intérêt scientifique majeur de ces faunes (implications paléoécologiques et paléogéographiques) est brièvement présenté. Enfin, la préservation de ces gisements, qui constituent un élément majeur du patrimoine paléontologique du Sud marocain, est abordée. -
Brigham Young University Geology Studies
GEOLOGY YOUNG STUDIES UNIVERSITY CONTENTS Paleontology and Depositional Environments: Cambrian of Western North America A symposium U. J. Brady University of Kansas D. P. Campbell University of Kansas H. E. Cook U. S. Geological Survey W. H. Fritz Canadian Geological Survey J. C. Kepper University of Nevada, Las Vegas R. B. Koepnidc Williams College V. E. Kurt2 Southwest Missouri State University K. C. Lohmann State University of New Yo&, Stony Brook D. J. McSride University of Kansas J. N. Moore University of California, Los AngeIes A. R. Pher State University of New York, Stony Brook J. K. aigby Brigham Young University R. A. Robison University of Kansas A. J. Bowell University of Kansas James Sprinkle University of Texas, Austin M. E. Taylor u. s. Geological SULV~~ Extended presentations of some papers presented at a Paleontological Society symposium held in Salt Lake City, Utah, on October 20, 1975. Brigham Young University Geology Studies Volume 23, Part 2-July 1976 Contents Trilobites in Utah folklore ................ M. E. Taylor and R. A. Robison Lower Cambrian Stratigraphy, Mackenzie Mountains, Northwestern Canada .................................................... W. H. Fritz Depositional Environments of the Lower Cambrian Poleta Formation and Its Stratigraphic Equivalents, California and Nevada ............................ J. N. Moore Biostratigraphic Implications of Trilobite Biofacies: Albertella Zone, Middle Cambrian, Western United States ............................ A. R. Palmer and D. P. Campbell Some Observations on Occurrences of Cambrian Porifera in Western North America and Their Evolution .......................................................... J. K. Rigby Biostratigraphy and Paleoecology of Cambrian Echinoderms from the Rocky Mountains ................ James Sprinkle Stratigraphic Relationships and Depositional Facies in a Portion of the Middle Cambrian of the Basin and Range Province ...............................