DOCSLIB.ORG

Newsletter Number 52

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Newsletter Number 52 The Palaeontology Newsletter Contents 52 Association Business 2 AGM 14 News 16 Association Meetings 20 From our own correspondents Conceptual fossils 24 Sutures joining Ontogeny and Fossils 29 Correspondence 33 Big Gamble for a Big Dead Fish 40 The Mystery Fossil 43 Obituary: Frank Hodson 46 Future meetings of other bodies 48 Meeting Reports 56 Book Reviews 68 Palaeontology vol 46 parts 1, 2, 3 99–101 Special Papers in Palaeontology no. 68 102 Reminder: The deadline for copy for Issue no 53 is 27th June 2003 On the Web: http://www.palass.org/ Newsletter 52 2 Newsletter 52 3 Meetings. Four meetings were held in 2002, and the Association extends its thanks to the Association Business organisers and host institutions of these meetings. a. Lyell Meeting. “Approaches to Reconstructing Phylogeny”, was convened on behalf of the Annual Report for 2002 Association by Prof. Gale (University of Greenwich) and Dr P.C.J. Donoghue (Lapworth Museum, University of Birmingham). Nature of the Association. The Palaeontological Association is a Charity registered in England, b. Forty-fifth Annual General Meeting and Address. 8th May. The address, entitled “Life and Charity Number 276369. Its Governing Instrument is the Constitution adopted on 27 February work of S.S. Buckmann (1860-1929) Geobiochronologist and the problems of assessing the work of 1957, amended on subsequent occasions as recorded in the Council Minutes. Trustees (Council past palaeontologists,” was given by Prof. Hugh Torrens and attended by 40 people. The meeting Members) are elected by vote of the Membership at the Annual General Meeting. The contact was held at the University of Birmingham and organised by Dr M.P. Smith and Dr T.J. Palmer. address of the Association is c/o The Executive Officer, Dr T.J. Palmer, Institute of Geography and Earth Sciences, University of Wales, Aberystwyth, SY23 3DB, Wales, UK. c. Progressive Palaeontology. 12th–13th June. The annual open meeting for presentations by research students was organised by David Gelsthorpe at the University of Leicester. Membership & subscriptions. Individual membership totalled 1,218 on 31 December 2002, an overall increase of 82 over the 2001 figure. There were 751 Ordinary Members, an increase d. 45th Annual Meeting. 15th–18th December. The Annual Meeting was held in the Department of 12; 132 Retired Members, an increase of 2; and 335 Student Members, an increase of 68. of Earth Sciences, University of Cambridge. Dr Nick Butterfield, Dr Jenny Clack and Dr Rachel Wood There were 164 Institutional Members in 2002, a decrease of 6 from last year. Total Individual with much local support organised the meeting. President’s Awards were made to Jodie Howe and Institutional subscriptions to Palaeontology through Blackwell’s agency numbered 395, a (University of Leeds) and Liam Herringshaw (University of Birmingham). Council Poster Prizes decrease of 1. Subscriptions to Special Papers in Palaeontology numbered 120 individuals, a were presented to Nicole Fraser (University of Southern California, Los Angeles) and Marc Jones decrease of 20 on last year, and 127 institutions, an increase of 20. Sales to individuals and (University College London). On the final day a field trip was undertaken to examine the Upper institutions through the Executive Officer of current and back numbers of Special Papers in Jurassic section at Upware. The meeting was attended by 330 delegates. Palaeontology yielded £11,823. Awards. Sylvester-Bradley Awards were made to David Allen, Colin Barras, Simon Braddy, John Income (after costs) from sales of Field Guides to Fossils amounted to £13,289. Field Guides sold Cunningham, Heather Jamniczky, Kathy Keefe, Hannah O’Regan, James Renshaw, Sally Reynolds, as follows: Fossil Plants of the London Clay – 61; Fossils of the Chalk (2nd edition) – 195; Zechstein Blair Steel, Sebastian Steyer, Mikhail Surkov, Oive Tinn, Lauren Tucker, David Waterhouse and James Reef Fossils and their Palaeoecology 49; Fossils of the Oxford Clay – 108; Fossils of the Santana and Wheeley. Mary Anning Awards, to a person not employed in palaeontology who had made an Crato Formations of North East Brazil – 87; Plant Fossils of the British Coal Measures – 77; Fossils outstanding contribution, were made to Fred Hotchkiss for his work on echinoderms and Michael J. of the Upper Ordovician – 71; The Jurassic Flora of Yorkshire – 109; Fossils of the Rhaetian Penarth Newman for his work on fossil fish. Hodson Fund awards, for palaeontologists under the age of 35 Group – 87; Dinosaurs of the Isle of Wight – 367. who have made an outstanding achievement in contributing to the science through a portfolio of original published research, were awarded to Dr Graham Budd and Dr Matthew Wills. The Lapworth Finance. Production of Palaeontology and Special Papers in Palaeontology is managed by Medal, for a person who has made a significant contribution to the science by means of a substantial Blackwell, who also make sales and manage distribution on behalf of the Association. In body of research, was awarded to Sir Alwyn Williams for his outstanding work on brachiopods. addition to the fee that they take directly from the subscribers, the Association paid them a further fee of £4,629. The Association gratefully acknowledges a bequest to the Sylvester-Bradley Council. The following members were elected to serve on Council at the AGM on 8th May 2002: Fund of £1,000 from the will of Mrs Joan Sylvester-Bradley, and donations from Members to the Prof. D.E.G. Briggs (President), Prof. D.A.T. Harper (Vice President), Prof. S K. Donovan (editor), Dr P.J. Sylvester-Bradley Fund, which amounted to £233. Orr (editor), Dr M.A. Purnell (Website Officer), Dr P. Manning (Publicity), Dr Graham Budd (Newsletter Reporter), Dr Jason Hilton (Ordinary) and Dr Maggie Cusack (Ordinary). Dr Thomas Servais, Prof. Grants from general funds to external organisations, for the support of palaeontological projects, E.N.K. Clarkson (editor) and Dr D. Polly (editor) would stand as co-opted members for 2002-3. totalled £10,139. At the AGM on 8th May 2002 the following members stepped down from Council: Prof. Paul, Publications. Volume 45 of Palaeontology, comprising 1,235 pages in total, was published Dr Barker, Dr Wood and Dr Pearson. and distributed at a cost of £90,543. Special Papers in Palaeontology 67, Studies in Palaeozoic palaeontology and biostratigraphy in honour of Charles Hepworth Holland (ed. by P.N. Wyse Dr T.J. Palmer continued to serve as the Executive Officer of the Association, and Prof. D.J. Batten Jackson, M.A. Parkes, and R.A. Wood; 260pp) was published at a cost of £8,740, and Special (University of Wales, Aberystwyth) as the Editor-in-Chief. Papers in Palaeontology 68, Life and environments in Purbeck times (ed. by A.R. Milner and Council is indebted to the Natural History Museum, the Lapworth Museum University of D.J. Batten; 268pp) was published at a cost of £8,732. Birmingham, University of Leicester and the University of Cambridge for providing meeting venues The Association is grateful to the National Museum of Wales and the Lapworth Museum, through the year. University of Birmingham for providing storage facilities for publication back-stock and archives. Professional Services. The Association’s Bankers are NatWest Bank, 42 High Street, Sheffield. The Council is indebted to Meg and Nick Stroud for assistance with the publication and distribution Association’s Independent Examiner is G.R. Powell BSc FCA, Nether House, Great Bowden, Market of Palaeontology Newsletter. Harborough, Leicestershire. Newsletter 52 4 Newsletter 52 5 Reserves. The Association holds reserves of £368,597 (2001: £381,883) in General Funds. These Reserves enable the Association to generate additional revenue through investments, and thus Nominations for election to Council to keep subscriptions to individuals at a low level, whilst still permitting a full programme of meetings to be held and publications to be produced. They also act as a buffer to enable the 2003-2004 normal programme to be followed in years in which expenditure exceeds income, and new Vice-President initiatives to be pursued, without increasing subscription costs. Dr Mark A. Purnell Council Activities. It was with sad regret that the Association noted the passing of Mrs Joan Proposed: Dr H.A. Armstrong Sylvester-Bradley, Prof. Frank Hodson and Prof. Michael House. All had made substantial contributions to the activities of the Association over many years. The Association continues to Seconded: Prof. S.K. Donovan improve its administration with further improvements to the Newsletter and the implementation Editor of secure online membership renewal and sales. Following declining attendances at the Annual Dr Per Ahlberg General Meeting, Council has agreed that the award of the Hodson Fund, Mary Anning Award Proposed: Prof. D.J. Batten and Lapworth Medal be moved to the Annual Meeting. From 2003 the Annual Address will also take place at the Annual Meeting. It is hoped these changes will make these events more Seconded: Dr C.H. Wellman accessible to the wider membership and increase the profile of the Association’s major awards. Dr Jason Hilton will become Web Officer, co-opted members Dr L.I. Anderson, The Association sponsored the International Trilobite Symposium, Eighth European Conodont Prof. E.N.K. Clarkson and Dr P.D. Polly will become editors. Symposium, the British Association Symposium “Sex, violence and death in the history of life,” and a symposium on the “Environmental and Biological impact of the end Ordovician glaciation” at the EGS-AGU-EUG Joint Assembly. The Association continues as a Tier 1 sponsor to Palaeontologica Electronica and has rejoined the International Palaeontological Association. The Association is Awards and Prizes also generating more publicity for palaeontology with major press initiatives and a continued high Nominations are now being sought for the Hodson Fund and Mary Anning Award.
Load more

Recommended publications
  • Morphology and Developmental Traits of the Trilobite Changaspis Elongata from the Cambrian Series 2 of Guizhou, South China
    Morphology and developmental traits of the trilobite Changaspis elongata from the Cambrian Series 2 of Guizhou, South China GUANG-YING DU, JIN PENG, DE-ZHI WANG, QIU-JUN WANG, YI-FAN WANG, and HUI ZHANG Du, G.-Y., Peng, J., Wang, D.-Z., Wang, Q.-J., Wang, Y.-F., and Zhang, H. 2019. Morphology and developmental traits of the trilobite Changaspis elongata from the Cambrian Series 2 of Guizhou, South China. Acta Palaeontologica Polonica 64 (4): 797–813. The morphology and ontogeny of the trilobite Changaspis elongata based on 216 specimens collected from the Lazizhai section of the Balang Formation (Stage 4, Series 2 of the Cambrian) in Guizhou Province, South China are described. The relatively continuous ontogenetic series reveals morphological changes, and shows that the species has seventeen thoracic segments in the holaspid period, instead of the sixteen as previously suggested. The development of the pygid- ial segments shows that their number gradually decreases during ontogeny. A new dataset of well-preserved specimens offers a unique opportunity to investigate developmental traits after segment addition is completed. The ontogenetic size progressions for the lengths of cephalon and trunk show overall compliance with Dyar’s rule. As a result of different average growth rates for the lengths of cephalon, trunk and pygidium, the length of the thorax relative to the body shows a gradually increasing trend; however, the cephalon and pygidium follow the opposite trend. Morphometric analysis across fourteen post-embryonic stages reveals growth gradients with increasing values for each thoracic segment from anterior to posterior. The reconstruction of the development traits shows visualization of the changes in relative growth and segmentation for the different body parts.
    [Show full text]
  • The Wyley History of the Geologists' Association in the 50 Years 1958
    THE WYLEY HISTORY OF THE GEOLOGISTS’ ASSOCIATION 1958–2008 Leake, Bishop & Howarth ASSOCIATION THE GEOLOGISTS’ OF HISTORY WYLEY THE The Wyley History of the Geologists’ Association in the 50 years 1958–2008 by Bernard Elgey Leake, Arthur Clive Bishop ISBN 978-0900717-71-0 and Richard John Howarth 9 780900 717710 GAHistory_cover_A5red.indd 1 19/08/2013 16:12 The Geologists’ Association, founded in 1858, exists to foster the progress and Bernard Elgey Leake was Professor of Geology (now Emeritus) in the diffusion of the science of Geology. It holds lecture meetings in London and, via University of Glasgow and Honorary Keeper of the Geological Collections in the Local Groups, throughout England and Wales. It conducts field meetings and Hunterian Museum (1974–97) and is now an Honorary Research Fellow in the School publishes Proceedings, the GA Magazine, Field Guides and Circulars regularly. For of Earth and Ocean Sciences in Cardiff University. He joined the GA in 1970, was further information apply to: Treasurer from 1997–2009 and is now an Honorary Life Member. He was the last The Executive Secretary, sole editor of the Journal of the Geological Society (1972–4); Treasurer (1981–5; Geologists’ Association, 1989–1996) and President (1986–8) of the Geological Society and President of the Burlington House, Mineralogical Society (1998–2000). He is a petrologist, geochemist, mineralogist, Piccadilly, a life-long mapper of the geology of Connemara, Ireland and a Fellow of the London W1J 0DU Royal Society of Edinburgh. He has held research Fellowships in the Universities of phone: 020 74349298 Liverpool (1955–7), Western Australia (1985) and Canterbury, NZ (1999) and a e-mail: [email protected] lectureship and Readership at the University of Bristol (1957–74).
    [Show full text]
  • Interior Columbia Basin Mollusk Species of Special Concern
    Deixis l-4 consultants INTERIOR COLUMl3lA BASIN MOLLUSK SPECIES OF SPECIAL CONCERN cryptomasfix magnidenfata (Pilsbly, 1940), x7.5 FINAL REPORT Contract #43-OEOO-4-9112 Prepared for: INTERIOR COLUMBIA BASIN ECOSYSTEM MANAGEMENT PROJECT 112 East Poplar Street Walla Walla, WA 99362 TERRENCE J. FREST EDWARD J. JOHANNES January 15, 1995 2517 NE 65th Street Seattle, WA 98115-7125 ‘(206) 527-6764 INTERIOR COLUMBIA BASIN MOLLUSK SPECIES OF SPECIAL CONCERN Terrence J. Frest & Edward J. Johannes Deixis Consultants 2517 NE 65th Street Seattle, WA 98115-7125 (206) 527-6764 January 15,1995 i Each shell, each crawling insect holds a rank important in the plan of Him who framed This scale of beings; holds a rank, which lost Would break the chain and leave behind a gap Which Nature’s self wcuid rue. -Stiiiingfieet, quoted in Tryon (1882) The fast word in ignorance is the man who says of an animal or plant: “what good is it?” If the land mechanism as a whole is good, then every part is good, whether we understand it or not. if the biota in the course of eons has built something we like but do not understand, then who but a fool would discard seemingly useless parts? To keep every cog and wheel is the first rule of intelligent tinkering. -Aido Leopold Put the information you have uncovered to beneficial use. -Anonymous: fortune cookie from China Garden restaurant, Seattle, WA in this “business first” society that we have developed (and that we maintain), the promulgators and pragmatic apologists who favor a “single crop” approach, to enable a continuous “harvest” from the natural system that we have decimated in the name of profits, jobs, etc., are fairfy easy to find.
    [Show full text]
  • NM IF C3 4 16 Fossil Imprint
    FOSSIL IMPRINT • vol. 72 • 2016 • no. 3-4 • pp. 183–201 (formerly ACTA MUSEI NATIONALIS PRAGAE, Series B – Historia Naturalis) HIPPOPOTAMODON ERYMANTHIUS (SUIDAE, MAMMALIA) FROM MAHMUTGAZI, DENIZLI-ÇAL BASIN, TURKEY MARTIN PICKFORD Sorbonne Universités – CR2P, MNHN, CNRS, UPMC – Paris VI, 8, rue Buffon, 75005, Paris, France; e-mail: [email protected]. Pickford, M. (2016): Hippopotamodon erymanthius (Suidae, Mammalia) from Mahmutgazi, Denizli-Çal Basin, Turkey. – Fossil Imprint, 72(3-4): 183–201, Praha. ISSN 2533-4050 (print), ISSN 2533-4069 (on-line). Abstract: The Staatliches Museum für Naturkunde in Karlsruhe houses an interesting collection of Turolian mammals from Mahmutgazi, Turkey, among which is a comprehensive sample of the large suid, Hippopotamodon erymanthius. The fossils plot out within the range of metric variation of H. erymanthius from Pikermi and Samos, Greece, but lie at the lower end of the range. Like the suids from these sites, the Mahmutgazi specimens lack the first premolar. Overall, the Mahmutgazi sample is metrically and morphologically close to the material from Akkaşdağı, Turkey. The upper and lower third molars and fourth premolars are, on average, smaller than those of Hippopotamodon major from Luberon, France (MN 13). Two undescribed fossils of H. ery- manthius from Pikermi are housed at the SMNK, and are included in this paper in order to fill out the data base for the species at this locality. The chronological position, palaeoecology and sexual dimorphism of the Mahmutgazi suids are discussed. Key words: Suidae, Late Miocene, Turkey, Hippopotamodon, biochronology, palaeoecology, sexual dimorphism Received: October 10, 2016 | Accepted: November 28, 2016 | Issued: December 30, 2016 Introduction (2010) mentions suids at the site, and correlated it to MN 11–12 (Early to Middle Turolian).
    [Show full text]
  • Perissodactyla: Tapirus) Hints at Subtle Variations in Locomotor Ecology
    JOURNAL OF MORPHOLOGY 277:1469–1485 (2016) A Three-Dimensional Morphometric Analysis of Upper Forelimb Morphology in the Enigmatic Tapir (Perissodactyla: Tapirus) Hints at Subtle Variations in Locomotor Ecology Jamie A. MacLaren1* and Sandra Nauwelaerts1,2 1Department of Biology, Universiteit Antwerpen, Building D, Campus Drie Eiken, Universiteitsplein, Wilrijk, Antwerp 2610, Belgium 2Centre for Research and Conservation, Koninklijke Maatschappij Voor Dierkunde (KMDA), Koningin Astridplein 26, Antwerp 2018, Belgium ABSTRACT Forelimb morphology is an indicator for order Perissodactyla (odd-toed ungulates). Modern terrestrial locomotor ecology. The limb morphology of the tapirs are widely accepted to belong to a single enigmatic tapir (Perissodactyla: Tapirus) has often been genus (Tapirus), containing four extant species compared to that of basal perissodactyls, despite the lack (Hulbert, 1973; Ruiz-Garcıa et al., 1985) and sev- of quantitative studies comparing forelimb variation in eral regional subspecies (Padilla and Dowler, 1965; modern tapirs. Here, we present a quantitative assess- ment of tapir upper forelimb osteology using three- Wilson and Reeder, 2005): the Baird’s tapir (T. dimensional geometric morphometrics to test whether bairdii), lowland tapir (T. terrestris), mountain the four modern tapir species are monomorphic in their tapir (T. pinchaque), and the Malayan tapir (T. forelimb skeleton. The shape of the upper forelimb bones indicus). Extant tapirs primarily inhabit tropical across four species (T. indicus; T. bairdii; T. terrestris; T. rainforest, with some populations also occupying pinchaque) was investigated. Bones were laser scanned wet grassland and chaparral biomes (Padilla and to capture surface morphology and 3D landmark analysis Dowler, 1965; Padilla et al., 1996). was used to quantify shape.
    [Show full text]
  • Title: Drimolen Crania Indicate Contemporaneity of Australopithecus, Paranthropus and Early Homo Erectus in S
    Submitted Manuscript: Confidential Title: Drimolen crania indicate contemporaneity of Australopithecus, Paranthropus and early Homo erectus in S. Africa Authors: Andy I.R. Herries1,2*†, Jesse M. Martin1†, A.B. Leece1†, Justin W. Adams3,2†, Giovanni Boschian4,2†, Renaud Joannes-Boyau5,2, Tara R. Edwards1, Tom Mallett1, Jason Massey3,6, Ashleigh Murszewski1, Simon Neuebauer7, Robyn Pickering8.9, David Strait10,2, Brian J. Armstrong2, Stephanie Baker2, Matthew V. Caruana2, Tim Denham11, John Hellstrom12, Jacopo Moggi-Cecchi13, Simon Mokobane2, Paul Penzo-Kajewski1, Douglass S. Rovinsky3, Gary T. Schwartz14, Rhiannon C. Stammers1, Coen Wilson1, Jon Woodhead12, Colin Menter13 Affiliations: 1. Palaeoscience Labs, Dept. Archaeology and History, La Trobe University, Bundoora, 3086, VIC, Australia. 2. Palaeo-Research Institute, University of Johannesburg, Gauteng Province, South Africa. 3. Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, VIC, Australia. 4. Department of Biology, University of Pisa, Italy 5. Geoarchaeology and Archaeometry Research Group (GARG), Southern Cross University, Military Rd, Lismore, 2480, NSW, Australia 6. Department of Integrative Biology and Physiology, University of Minnesota Medical School, USA 7. Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Germany. 8. Department of Geological Sciences, University of Cape Town, Western Cape, South Africa 9. Human Evolution Research Institute, University of Cape Town, Western Cape, South Africa 10. Department of Anthropology, Washington University in St. Louis, St. Louis, USA 11. Geoarchaeology Research Group, School of Archaeology and Anthropology, Australian National University, Canberra, ACT, Australia 12. Earth Sciences, University of Melbourne, Australia 13. Department of Biology, University of Florence, Italy 14. Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, U.S.A.
    [Show full text]
  • Chapter 1 - Introduction
    EURASIAN MIDDLE AND LATE MIOCENE HOMINOID PALEOBIOGEOGRAPHY AND THE GEOGRAPHIC ORIGINS OF THE HOMININAE by Mariam C. Nargolwalla A thesis submitted in conformity with the requirements for the degree of Doctor of Philosophy Graduate Department of Anthropology University of Toronto © Copyright by M. Nargolwalla (2009) Eurasian Middle and Late Miocene Hominoid Paleobiogeography and the Geographic Origins of the Homininae Mariam C. Nargolwalla Doctor of Philosophy Department of Anthropology University of Toronto 2009 Abstract The origin and diversification of great apes and humans is among the most researched and debated series of events in the evolutionary history of the Primates. A fundamental part of understanding these events involves reconstructing paleoenvironmental and paleogeographic patterns in the Eurasian Miocene; a time period and geographic expanse rich in evidence of lineage origins and dispersals of numerous mammalian lineages, including apes. Traditionally, the geographic origin of the African ape and human lineage is considered to have occurred in Africa, however, an alternative hypothesis favouring a Eurasian origin has been proposed. This hypothesis suggests that that after an initial dispersal from Africa to Eurasia at ~17Ma and subsequent radiation from Spain to China, fossil apes disperse back to Africa at least once and found the African ape and human lineage in the late Miocene. The purpose of this study is to test the Eurasian origin hypothesis through the analysis of spatial and temporal patterns of distribution, in situ evolution, interprovincial and intercontinental dispersals of Eurasian terrestrial mammals in response to environmental factors. Using the NOW and Paleobiology databases, together with data collected through survey and excavation of middle and late Miocene vertebrate localities in Hungary and Romania, taphonomic bias and sampling completeness of Eurasian faunas are assessed.
    [Show full text]
  • Constraints on the Timescale of Animal Evolutionary History
    Palaeontologia Electronica palaeo-electronica.org Constraints on the timescale of animal evolutionary history Michael J. Benton, Philip C.J. Donoghue, Robert J. Asher, Matt Friedman, Thomas J. Near, and Jakob Vinther ABSTRACT Dating the tree of life is a core endeavor in evolutionary biology. Rates of evolution are fundamental to nearly every evolutionary model and process. Rates need dates. There is much debate on the most appropriate and reasonable ways in which to date the tree of life, and recent work has highlighted some confusions and complexities that can be avoided. Whether phylogenetic trees are dated after they have been estab- lished, or as part of the process of tree finding, practitioners need to know which cali- brations to use. We emphasize the importance of identifying crown (not stem) fossils, levels of confidence in their attribution to the crown, current chronostratigraphic preci- sion, the primacy of the host geological formation and asymmetric confidence intervals. Here we present calibrations for 88 key nodes across the phylogeny of animals, rang- ing from the root of Metazoa to the last common ancestor of Homo sapiens. Close attention to detail is constantly required: for example, the classic bird-mammal date (base of crown Amniota) has often been given as 310-315 Ma; the 2014 international time scale indicates a minimum age of 318 Ma. Michael J. Benton. School of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, U.K. [email protected] Philip C.J. Donoghue. School of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, U.K. [email protected] Robert J.
    [Show full text]
  • Early Ontogeny of Jurassic Bakevelliids and Their Bearing on Bivalve Evolution
    Early ontogeny of Jurassic bakevelliids and their bearing on bivalve evolution NIKOLAUS MALCHUS Malchus, N. 2004. Early ontogeny of Jurassic bakevelliids and their bearing on bivalve evolution. Acta Palaeontologica Polonica 49 (1): 85–110. Larval and earliest postlarval shells of Jurassic Bakevelliidae are described for the first time and some complementary data are given concerning larval shells of oysters and pinnids. Two new larval shell characters, a posterodorsal outlet and shell septum are described. The outlet is homologous to the posterodorsal notch of oysters and posterodorsal ridge of arcoids. It probably reflects the presence of the soft anatomical character post−anal tuft, which, among Pteriomorphia, was only known from oysters. A shell septum was so far only known from Cassianellidae, Lithiotidae, and the bakevelliid Kobayashites. A review of early ontogenetic shell characters strongly suggests a basal dichotomy within the Pterio− morphia separating taxa with opisthogyrate larval shells, such as most (or all?) Praecardioida, Pinnoida, Pterioida (Bakevelliidae, Cassianellidae, all living Pterioidea), and Ostreoida from all other groups. The Pinnidae appear to be closely related to the Pterioida, and the Bakevelliidae belong to the stem line of the Cassianellidae, Lithiotidae, Pterioidea, and Ostreoidea. The latter two superfamilies comprise a well constrained clade. These interpretations are con− sistent with recent phylogenetic hypotheses based on palaeontological and genetic (18S and 28S mtDNA) data. A more detailed phylogeny is hampered by the fact that many larval shell characters are rather ancient plesiomorphies. Key words: Bivalvia, Pteriomorphia, Bakevelliidae, larval shell, ontogeny, phylogeny. Nikolaus Malchus [[email protected]], Departamento de Geologia/Unitat Paleontologia, Universitat Autòno− ma Barcelona, 08193 Bellaterra (Cerdanyola del Vallès), Spain.
    [Show full text]
  • Newsletter for Members of the Palaeontological Associationr Number 37 1998
    PAL A EONTOLOGY E W S L E T T E NThe Newsletter for members of the Palaeontological AssociationR Number 37 1998 http://www.nhm.ac.uk/paleonet/PalAss/PalAss.html Newsletter copy Information, whether copy as such or Newsletter messages, review material, news, emergencies and advertising suggestions, can be sent in writing to Dr Sue Rigby, Dept of Geology and Geophysics, Grant Institute, West Mains Road, Edinburgh EH9 3JW; fax 0131 668 3184; email [email protected]. It would be 1 helpful if longer items of copy could be sent on a 3 /2" disk with text in Microsoft Word, WordPerfect or ASCII format. Disks clearly marked with the owner's name and address will be returned as soon as possible. The Newsletter is produced by Meg Stroud, and printed by Edinburgh University Printing Services. Deadline for copy for Issue No. 38 is 22nd May 1998. Palaeontological Association on the Internet The Palaeontological Association has its own pages on the World Wide Web, including information about the Association, and copies of the Newsletter. Site-keeper Mark Purnell can be reached by email at [email protected]. The locator is: http://www.nhm.ac.uk/paleonet/PalAss/PalAss.html Advertising in the Newsletter Advertising space in the Newsletter will be made available at the rates given below to any organisation or individual provided the content is appropriate to the aims of the Palaeontological Association. Association Members receive a 30% discount on the rates listed. All copy will be subjected to editorial control. Although every effort will be made to ensure the bona fide nature of advertisements in the Newsletter, the Palaeontological Association cannot accept any responsibility for their content.
    [Show full text]
  • Paleoecological Comparison Between Late Miocene Localities of China and Greece Based on Hipparion Faunas
    Paleoecological comparison between late Miocene localities of China and Greece based on Hipparion faunas Tao DENG Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044 (China) [email protected] Deng T. 2006. — Paleoecological comparison between late Miocene localities of China and Greece based on Hipparion faunas. Geodiversitas 28 (3) : 499-516. ABSTRACT Both China and Greece have abundant fossils of the late Miocene Hipparion fauna. Th e habitat of the Hipparion fauna in Greece was a sclerophyllous ever- green woodland. Th e Chinese late Miocene Hipparion fauna is represented respectively in the Guonigou fauna (MN 9), the Dashengou fauna (MN 10), and the Yangjiashan fauna (MN 11) from Linxia, Gansu, and the Baode fauna (MN 12) from Baode, Shanxi. According to the evidence from lithology, carbon isotopes, paleobotany, taxonomic framework, mammalian diversity and faunal similarity, the paleoenvironment of the Hipparion fauna in China was a subarid open steppe, which is diff erent from that of Greece. Th e red clay bearing the Hipparion fauna in China is windblown in origin, i.e. eolian deposits. Stable carbon isotopes from tooth enamel and paleosols indicate that C3 plants domi- nated the vegetation during the late Miocene in China. Pollens of xerophilous and sub-xerophilous grasses show a signal of steppe or dry grassland. Forest mammals, such as primates and chalicotheres, are absent or scarce, but grass- land mammals, such as horses and rhinoceroses, are abundant in the Chinese Hipparion fauna. Th e species richness of China and Greece exhibits a similar KEY WORDS trend with a clear increase from MN 9 to MN 12, but the two regions have Hipparion fauna, low similarities at the species level.
    [Show full text]
  • The Evolution of Trilobite Body Patterning
    ANRV309-EA35-14 ARI 20 March 2007 15:54 The Evolution of Trilobite Body Patterning Nigel C. Hughes Department of Earth Sciences, University of California, Riverside, California 92521; email: [email protected] Annu. Rev. Earth Planet. Sci. 2007. 35:401–34 Key Words First published online as a Review in Advance on Trilobita, trilobitomorph, segmentation, Cambrian, Ordovician, January 29, 2007 diversification, body plan The Annual Review of Earth and Planetary Sciences is online at earth.annualreviews.org Abstract This article’s doi: The good fossil record of trilobite exoskeletal anatomy and on- 10.1146/annurev.earth.35.031306.140258 togeny, coupled with information on their nonbiomineralized tis- Copyright c 2007 by Annual Reviews. sues, permits analysis of how the trilobite body was organized and All rights reserved developed, and the various evolutionary modifications of such pat- 0084-6597/07/0530-0401$20.00 terning within the group. In several respects trilobite development and form appears comparable with that which may have charac- terized the ancestor of most or all euarthropods, giving studies of trilobite body organization special relevance in the light of recent advances in the understanding of arthropod evolution and devel- opment. The Cambrian diversification of trilobites displayed mod- Annu. Rev. Earth Planet. Sci. 2007.35:401-434. Downloaded from arjournals.annualreviews.org ifications in the patterning of the trunk region comparable with by UNIVERSITY OF CALIFORNIA - RIVERSIDE LIBRARY on 05/02/07. For personal use only. those seen among the closest relatives of Trilobita. In contrast, the Ordovician diversification of trilobites, although contributing greatly to the overall diversity within the clade, did so within a nar- rower range of trunk conditions.
    [Show full text]