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JVP 26(3) September 2006—ABSTRACTS
Neoceti Symposium, Saturday 8:45 acid-prepared osteolepiforms Medoevia and Gogonasus has offered strong support for BODY SIZE AND CRYPTIC TROPHIC SEPARATION OF GENERALIZED Jarvik’s interpretation, but Eusthenopteron itself has not been reexamined in detail. PIERCE-FEEDING CETACEANS: THE ROLE OF FEEDING DIVERSITY DUR- Uncertainty has persisted about the relationship between the large endoskeletal “fenestra ING THE RISE OF THE NEOCETI endochoanalis” and the apparently much smaller choana, and about the occlusion of upper ADAM, Peter, Univ. of California, Los Angeles, Los Angeles, CA; JETT, Kristin, Univ. of and lower jaw fangs relative to the choana. California, Davis, Davis, CA; OLSON, Joshua, Univ. of California, Los Angeles, Los A CT scan investigation of a large skull of Eusthenopteron, carried out in collaboration Angeles, CA with University of Texas and Parc de Miguasha, offers an opportunity to image and digital- Marine mammals with homodont dentition and relatively little specialization of the feeding ly “dissect” a complete three-dimensional snout region. We find that a choana is indeed apparatus are often categorized as generalist eaters of squid and fish. However, analyses of present, somewhat narrower but otherwise similar to that described by Jarvik. It does not many modern ecosystems reveal the importance of body size in determining trophic parti- receive the anterior coronoid fang, which bites mesial to the edge of the dermopalatine and tioning and diversity among predators. We established relationships between body sizes of is received by a pit in that bone. The fenestra endochoanalis is partly floored by the vomer extant cetaceans and their prey in order to infer prey size and potential trophic separation of and the dermopalatine, restricting the choana to the lateral part of the fenestra. -
Evolutionary Patterns of Trilobites Across the End Ordovician Mass Extinction
Evolutionary Patterns of Trilobites Across the End Ordovician Mass Extinction by Curtis R. Congreve B.S., University of Rochester, 2006 M.S., University of Kansas, 2008 Submitted to the Department of Geology and the Faculty of the Graduate School of The University of Kansas in partial fulfillment on the requirements for the degree of Doctor of Philosophy 2012 Advisory Committee: ______________________________ Bruce Lieberman, Chair ______________________________ Paul Selden ______________________________ David Fowle ______________________________ Ed Wiley ______________________________ Xingong Li Defense Date: December 12, 2012 ii The Dissertation Committee for Curtis R. Congreve certifies that this is the approved Version of the following thesis: Evolutionary Patterns of Trilobites Across the End Ordovician Mass Extinction Advisory Committee: ______________________________ Bruce Lieberman, Chair ______________________________ Paul Selden ______________________________ David Fowle ______________________________ Ed Wiley ______________________________ Xingong Li Accepted: April 18, 2013 iii Abstract: The end Ordovician mass extinction is the second largest extinction event in the history or life and it is classically interpreted as being caused by a sudden and unstable icehouse during otherwise greenhouse conditions. The extinction occurred in two pulses, with a brief rise of a recovery fauna (Hirnantia fauna) between pulses. The extinction patterns of trilobites are studied in this thesis in order to better understand selectivity of the -
Hox Gene Duplications Correlate with Posterior Heteronomy in Scorpions
Downloaded from http://rspb.royalsocietypublishing.org/ on February 17, 2015 Hox gene duplications correlate with posterior heteronomy in scorpions Prashant P. Sharma1, Evelyn E. Schwager2, Cassandra G. Extavour2 and Ward C. Wheeler1 rspb.royalsocietypublishing.org 1Division of Invertebrate Zoology, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024, USA 2Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA Research The evolutionary success of the largest animal phylum, Arthropoda, has been attributed to tagmatization, the coordinated evolution of adjacent metameres Cite this article: Sharma PP, Schwager EE, to form morphologically and functionally distinct segmental regions called Extavour CG, Wheeler WC. 2014 Hox gene tagmata. Specification of regional identity is regulated by the Hox genes, of duplications correlate with posterior which 10 are inferred to be present in the ancestor of arthropods. With six heteronomy in scorpions. Proc. R. Soc. B 281: different posterior segmental identities divided into two tagmata, the bauplan of scorpions is the most heteronomous within Chelicerata. Expression 20140661. domains of the anterior eight Hox genes are conserved in previously surveyed http://dx.doi.org/10.1098/rspb.2014.0661 chelicerates, but it is unknown how Hox genes regionalize the three tagmata of scorpions. Here, we show that the scorpion Centruroides sculpturatus has two paralogues of all Hox genes except Hox3, suggesting cluster and/or whole genome duplication in this arachnid order. Embryonic anterior expression Received: 19 March 2014 domain boundaries of each of the last four pairs of Hox genes (two paralogues Accepted: 22 July 2014 each of Antp, Ubx, abd-A and Abd-B) are unique and distinguish segmental groups, such as pectines, book lungs and the characteristic tail, while main- taining spatial collinearity. -
Online Dictionary of Invertebrate Zoology Parasitology, Harold W
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Armand R. Maggenti Online Dictionary of Invertebrate Zoology Parasitology, Harold W. Manter Laboratory of September 2005 Online Dictionary of Invertebrate Zoology: S Mary Ann Basinger Maggenti University of California-Davis Armand R. Maggenti University of California, Davis Scott Gardner University of Nebraska-Lincoln, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/onlinedictinvertzoology Part of the Zoology Commons Maggenti, Mary Ann Basinger; Maggenti, Armand R.; and Gardner, Scott, "Online Dictionary of Invertebrate Zoology: S" (2005). Armand R. Maggenti Online Dictionary of Invertebrate Zoology. 6. https://digitalcommons.unl.edu/onlinedictinvertzoology/6 This Article is brought to you for free and open access by the Parasitology, Harold W. Manter Laboratory of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Armand R. Maggenti Online Dictionary of Invertebrate Zoology by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Online Dictionary of Invertebrate Zoology 800 sagittal triact (PORIF) A three-rayed megasclere spicule hav- S ing one ray very unlike others, generally T-shaped. sagittal triradiates (PORIF) Tetraxon spicules with two equal angles and one dissimilar angle. see triradiate(s). sagittate a. [L. sagitta, arrow] Having the shape of an arrow- sabulous, sabulose a. [L. sabulum, sand] Sandy, gritty. head; sagittiform. sac n. [L. saccus, bag] A bladder, pouch or bag-like structure. sagittocysts n. [L. sagitta, arrow; Gr. kystis, bladder] (PLATY: saccate a. [L. saccus, bag] Sac-shaped; gibbous or inflated at Turbellaria) Pointed vesicles with a protrusible rod or nee- one end. dle. saccharobiose n. -
Zootaxa,Crustacean Classification
Zootaxa 1668: 313–325 (2007) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA Copyright © 2007 · Magnolia Press ISSN 1175-5334 (online edition) Crustacean classification: on-going controversies and unresolved problems* GEOFF A. BOXSHALL Department of Zoology, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom E-mail: [email protected] *In: Zhang, Z.-Q. & Shear, W.A. (Eds) (2007) Linnaeus Tercentenary: Progress in Invertebrate Taxonomy. Zootaxa, 1668, 1–766. Table of contents Abstract . 313 Introduction . 313 Treatment of parasitic Crustacea . 315 Affinities of the Remipedia . 316 Validity of the Entomostraca . 318 Exopodites and epipodites . 319 Using of larval characters in estimating phylogenetic relationships . 320 Fossils and the crustacean stem lineage . 321 Acknowledgements . 322 References . 322 Abstract The journey from Linnaeus’s original treatment to modern crustacean systematics is briefly characterised. Progress in our understanding of phylogenetic relationships within the Crustacea is linked to continuing discoveries of new taxa, to advances in theory and to improvements in methodology. Six themes are discussed that serve to illustrate some of the major on-going controversies and unresolved problems in the field as well as to illustrate changes that have taken place since the time of Linnaeus. These themes are: 1. the treatment of parasitic Crustacea, 2. the affinities of the Remipedia, 3. the validity of the Entomostraca, 4. exopodites and epipodites, 5. using larval characters in estimating phylogenetic rela- tionships, and 6. fossils and the crustacean stem-lineage. It is concluded that the development of the stem lineage concept for the Crustacea has been dominated by consideration of taxa known only from larval or immature stages. -
Timeline of the Evolutionary History of Life
Timeline of the evolutionary history of life This timeline of the evolutionary history of life represents the current scientific theory Life timeline Ice Ages outlining the major events during the 0 — Primates Quater nary Flowers ←Earliest apes development of life on planet Earth. In P Birds h Mammals – Plants Dinosaurs biology, evolution is any change across Karo o a n ← Andean Tetrapoda successive generations in the heritable -50 0 — e Arthropods Molluscs r ←Cambrian explosion characteristics of biological populations. o ← Cryoge nian Ediacara biota – z ← Evolutionary processes give rise to diversity o Earliest animals ←Earliest plants at every level of biological organization, i Multicellular -1000 — c from kingdoms to species, and individual life ←Sexual reproduction organisms and molecules, such as DNA and – P proteins. The similarities between all present r -1500 — o day organisms indicate the presence of a t – e common ancestor from which all known r Eukaryotes o species, living and extinct, have diverged -2000 — z o through the process of evolution. More than i Huron ian – c 99 percent of all species, amounting to over ←Oxygen crisis [1] five billion species, that ever lived on -2500 — ←Atmospheric oxygen Earth are estimated to be extinct.[2][3] Estimates on the number of Earth's current – Photosynthesis Pong ola species range from 10 million to 14 -3000 — A million,[4] of which about 1.2 million have r c been documented and over 86 percent have – h [5] e not yet been described. However, a May a -3500 — n ←Earliest oxygen 2016 -
Turning Semicircular Canal Function on Its Head: Dinosaurs and a Novel Vestibular Analysis
Turning Semicircular Canal Function on Its Head: Dinosaurs and a Novel Vestibular Analysis Justin A. Georgi1*, Justin S. Sipla2, Catherine A. Forster3 1 Department of Anatomy, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, Arizona, United States of America, 2 Department of Anatomy and Cell Biology, University of Iowa, Iowa City, Iowa, United States of America, 3 Department of Biological Sciences, The George Washington University, Washington D.C., United States of America Abstract Previous investigations have correlated vestibular function to locomotion in vertebrates by scaling semicircular duct radius of curvature to body mass. However, this method fails to discriminate bipedal from quadrupedal non-avian dinosaurs. Because they exhibit a broad range of relative head sizes, we use dinosaurs to test the hypothesis that semicircular ducts scale more closely with head size. Comparing the area enclosed by each semicircular canal to estimated body mass and to two different measures of head size, skull length and estimated head mass, reveals significant patterns that corroborate a connection between physical parameters of the head and semicircular canal morphology. Head mass more strongly correlates with anterior semicircular canal size than does body mass and statistically separates bipedal from quadrupedal taxa, with bipeds exhibiting relatively larger canals. This morphologic dichotomy likely reflects adaptations of the vestibular system to stability demands associated with terrestrial locomotion on two, versus four, feet. This new method has implications for reinterpreting previous studies and informing future studies on the connection between locomotion type and vestibular function. Citation: Georgi JA, Sipla JS, Forster CA (2013) Turning Semicircular Canal Function on Its Head: Dinosaurs and a Novel Vestibular Analysis. -
001-012 Primeras Páginas
PUBLICACIONES DEL INSTITUTO GEOLÓGICO Y MINERO DE ESPAÑA Serie: CUADERNOS DEL MUSEO GEOMINERO. Nº 9 ADVANCES IN TRILOBITE RESEARCH ADVANCES IN TRILOBITE RESEARCH IN ADVANCES ADVANCES IN TRILOBITE RESEARCH IN ADVANCES planeta tierra Editors: I. Rábano, R. Gozalo and Ciencias de la Tierra para la Sociedad D. García-Bellido 9 788478 407590 MINISTERIO MINISTERIO DE CIENCIA DE CIENCIA E INNOVACIÓN E INNOVACIÓN ADVANCES IN TRILOBITE RESEARCH Editors: I. Rábano, R. Gozalo and D. García-Bellido Instituto Geológico y Minero de España Madrid, 2008 Serie: CUADERNOS DEL MUSEO GEOMINERO, Nº 9 INTERNATIONAL TRILOBITE CONFERENCE (4. 2008. Toledo) Advances in trilobite research: Fourth International Trilobite Conference, Toledo, June,16-24, 2008 / I. Rábano, R. Gozalo and D. García-Bellido, eds.- Madrid: Instituto Geológico y Minero de España, 2008. 448 pgs; ils; 24 cm .- (Cuadernos del Museo Geominero; 9) ISBN 978-84-7840-759-0 1. Fauna trilobites. 2. Congreso. I. Instituto Geológico y Minero de España, ed. II. Rábano,I., ed. III Gozalo, R., ed. IV. García-Bellido, D., ed. 562 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system now known or to be invented, without permission in writing from the publisher. References to this volume: It is suggested that either of the following alternatives should be used for future bibliographic references to the whole or part of this volume: Rábano, I., Gozalo, R. and García-Bellido, D. (eds.) 2008. Advances in trilobite research. Cuadernos del Museo Geominero, 9. -
Abstracts Volume
SVPCA 58, Cambridge 2010, Preface Welcome to the 58th Symposium of Vertebrate Palaeontology and Comparative Anatomy, hosted by the University Museum of Zoology, Cambridge. We very much hope you find the meeting rewarding, and that you have time to enjoy the other attractions of the university, colleges, and city centre. The meeting logo was designed by Julia Molnar1 and depicts the finback whale (Balaenoptera physalus) on display above the Museum of Zoology. Enjoy your time in Cambridge! 1JuliaMolnar,RoyalVeterinaryCollege,jmolnar-at-rvc.ac.uk 1 SPPC/SVPCA 2010 Programme Overview Tuesday 14th September: SPPC Session 1, Chair: Matt Lowe 15.30-15.50 Christian Baars Infacol – if it’s good enough for babies, it’s good enough for ammonites. 15.50-15.10 Nigel R Larkin The joy of steel: How to master your awkward fossil in the field. 16.10-16.30 Frank Osbaeck Mechanical and chemical preparation methods used on the lower Eocene cementstone concretions from the Mo-Clay of northern Denmark 19.00 onwards EVENING RECEPTION, ZOOLOGY MUSEUM Wednesday 15th September 9.10-9.20 Welcome, notices for the day Session 1, Chair: Paul Barret 9.20-9.40 Eric Buffetaut et al. The Early Cretaceous vertebrate assemblage from the Napai Formation of Guangxi, southern China: a comparison with Thai assemblages 9.40-10.00 Michael J Benton et al. Recovery and expansion of marine vertebrate faunas in the Triassic of South China 10.00-10.20 Susan E Evans and Magdalend Borsuk-Bialynicka The Early Triassic faunal assemblage of Czatkowice, Poland 10.20-10.40 Sweetman, Steven C The first records of amphibians, lizards and maniraptoran dinosaurs from the Lower Cretaceous Hastings Group of south-east England 10.40-11.10 COFFEE BREAK Session 2, Chair: Jenny Clack 11.10-11.30 Tim Smithson and Stan Wood Eliminating Romer’s Gap: new tetrapods from the basal Carboniferous of the Scottish Borders 2 11.30-11.50 Per E Ahlberg et al. -
Arts Et Savoirs, 9 | 2018 L’Âme Cellulaire Et L’Ésotérisme Moderne De Haeckel 2
Arts et Savoirs 9 | 2018 Ernst Haeckel entre science et esthétique L’âme cellulaire et l’ésotérisme moderne de Haeckel Robert Matthias Erdbeer Traducteur : Julie Mottet et Henning Hufnagel Édition électronique URL : http://journals.openedition.org/aes/1193 DOI : 10.4000/aes.1193 ISSN : 2258-093X Éditeur Laboratoire LISAA Référence électronique Robert Matthias Erdbeer, « L’âme cellulaire et l’ésotérisme moderne de Haeckel », Arts et Savoirs [En ligne], 9 | 2018, mis en ligne le 14 mai 2018, consulté le 02 mai 2019. URL : http:// journals.openedition.org/aes/1193 ; DOI : 10.4000/aes.1193 Ce document a été généré automatiquement le 2 mai 2019. Centre de recherche LISAA (Littératures SAvoirs et Arts) L’âme cellulaire et l’ésotérisme moderne de Haeckel 1 L’âme cellulaire et l’ésotérisme moderne de Haeckel Robert Matthias Erdbeer Traduction : Julie Mottet et Henning Hufnagel NOTE DE L'AUTEUR Cet article est une version française du texte „Die ‚Erhaltung der Fühlung’. Haeckels Seelenzellen und der Stil der Esoterischen Moderne“ paru dans Lendemains. Études comparées sur la France, t. 41, n° 162-163, 2016, p. 100-123 (version en ligne : URL : http:// periodicals.narr.de/index.php/Lendemains/article/view/2939). Traduction de l’allemand par Julie Mottet et Henning Hufnagel En somme c’est le malheur du savoir de nos jours que tout vise si terriblement à la grandiloquence.1 Sören Kierkegaard, Le Concept de l’angoisse. De la science à la para-science ésotérique Arts et Savoirs, 9 | 2018 L’âme cellulaire et l’ésotérisme moderne de Haeckel 2 1 La modernité ésotérique est le pendant de « l’ère des sciences naturelles ». -
The Big Picture Book
BOOK PUBLISHERS Teachers Notes (Middle Years) by Dr John Long The Big Picture Book by Dr John Long, illustrated by Brian Choo ISBN 9781741143287 Recommended for ages 8-14 These notes may be reproduced free of charge for use and study within schools but they may not be reproduced (either in whole or in part) and offered for commercial sale. Introduction ............................................ 2 Science studies........................................ 2 Time........................................... 2 Astronomy .................................. 3 Geology ...................................... 3 Biology ....................................... 4 Science and the future .................. 6 Cultural studies ....................................... 6 Language................................................ 7 Meanings of some of the names featured in the book ........... 7 About the writer and illustrator .................. 7 Appendix: A ‘Bestiary’ of living things featured in the illustrations........................ 10 83 Alexander Street PO Box 8500 Crows Nest, Sydney St Leonards NSW 2065 NSW 1590 ph: (61 2) 8425 0100 [email protected] Allen & Unwin PTY LTD Australia Australia fax: (61 2) 9906 2218 www.allenandunwin.com ABN 79 003 994 278 INTRODUCTION This book was written to introduce to upper primary and lower secondary level children an outline of the three main themes that contribute towards our understanding of evolution: time, physical processes, and biological change. The book can be used to augment studies in general science (astronomy, geology, biology), but also to contribute to an understanding of the birth of human culture and to promote discussion of environmental issues confronting the world today. The writing is a simple, almost lyrical style to facilitate an easy level of reading, with pronunciation guide and glossary at the back of the book to help children say and understand the meaning of most of the technical words used in the text. -
Making Art / Discovering Science Steven Shapin, Harvard University
Making Art / Discovering Science steven shapin, harvard university ere is one way that, in ordinary speech, we mark the dis- tinction between science and art. We say that scientists dis- H cover things—the relationship between the volume and pres- sure of air was discovered by Boyle; nuclear fission was discovered by Hahn, Strassmann, and Meitner; the structure of DNA was discovered by Watson and Crick. We say, however, that artists invent, compose, construct,ormake things—Mozart composed Così fan tutte; Botticelli made La Primavera; Philip Roth invented Nathan Zuckerman. In ordi- nary speech, all genuine art is made up and no genuine science is made up. Again, in ordinary speech, the difference between these catego- ries is fundamental: it’s an important way we have to distinguish science and art in the stream of culture, to assign them to different institutions, to give us confidence in our distinctions, to hold them to different standards, and to assign them to different schemes of value. The categories also mark out different kinds of relationship between the named responsible people, and what it is they are said to be re- sponsible for. And it picks out different existential standings for the © 2018 by the university of chicago. all rights reserved. know v2n2, fall 2018 This content downloaded from 206.253.207.235 on October 27, 2018 08:17:38 AM All use subject to University of Chicago Press Terms and Conditions (http://www.journals.uchicago.edu/t-and-c). know: a journal on the formation of knowledge objects of science and of art—as between things that exist indepen- dently in the world and things we bring into being through the work- ings of our creative imaginations.