I Ecomorphological Change in Lobe-Finned Fishes (Sarcopterygii
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Osteichthyes: Sarcopterygii) Apex Predator from the Eifelian-Aged Dundee Formation of Ontario, Canada
Canadian Journal of Earth Sciences A large onychodontiform (Osteichthyes: Sarcopterygii) apex predator from the Eifelian-aged Dundee Formation of Ontario, Canada. Journal: Canadian Journal of Earth Sciences Manuscript ID cjes-2016-0119.R3 Manuscript Type: Article Date Submitted by the Author: 04-Dec-2016 Complete List of Authors: Mann, Arjan; Carleton University, Earth Sciences; University of Toronto Faculty of ArtsDraft and Science, Earth Sciences Rudkin, David; Royal Ontario Museum Evans, David C.; Royal Ontario Museum, Natural History; University of Toronto, Ecology and Evolutionary Biology Laflamme, Marc; University of Toronto - Mississauga, Chemical and Physical Sciences Keyword: Sarcopterygii, Onychodontiformes, Body size, Middle Devonian, Eifelian https://mc06.manuscriptcentral.com/cjes-pubs Page 1 of 34 Canadian Journal of Earth Sciences A large onychodontiform (Osteichthyes: Sarcopterygii) apex predator from the Eifelian- aged Dundee Formation of Ontario, Canada. Arjan Mann 1,2*, David Rudkin 1,2 , David C. Evans 2,3 , and Marc Laflamme 1 1, Department of Earth Sciences, University of Toronto, 22 Russell Street, Toronto, Ontario, M5S 3B1, Canada, [email protected], [email protected] 2, Department of Palaeobiology, Royal Ontario Museum, 100 Queen’s Park, Toronto, Ontario, Canada M5S 2C6 3, Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2 *Corresponding author (e-mail: [email protected] ca). https://mc06.manuscriptcentral.com/cjes-pubs Canadian Journal of Earth Sciences Page 2 of 34 Abstract The Devonian marine strata of southwestern Ontario, Canada have been well documented geologically, but their vertebrate fossils are poorly studied. Here we report a new onychodontiform (Osteichthyes, Sarcopterygii) Onychodus eriensis n. -
Cambridge University Press 978-1-107-17944-8 — Evolution And
Cambridge University Press 978-1-107-17944-8 — Evolution and Development of Fishes Edited by Zerina Johanson , Charlie Underwood , Martha Richter Index More Information Index abaxial muscle,33 Alizarin red, 110 arandaspids, 5, 61–62 abdominal muscles, 212 Alizarin red S whole mount staining, 127 Arandaspis, 5, 61, 69, 147 ability to repair fractures, 129 Allenypterus, 253 arcocentra, 192 Acanthodes, 14, 79, 83, 89–90, 104, 105–107, allometric growth, 129 Arctic char, 130 123, 152, 152, 156, 213, 221, 226 alveolar bone, 134 arcualia, 4, 49, 115, 146, 191, 206 Acanthodians, 3, 7, 13–15, 18, 23, 29, 63–65, Alx, 36, 47 areolar calcification, 114 68–69, 75, 79, 82, 84, 87–89, 91, 99, 102, Amdeh Formation, 61 areolar cartilage, 192 104–106, 114, 123, 148–149, 152–153, ameloblasts, 134 areolar mineralisation, 113 156, 160, 189, 192, 195, 198–199, 207, Amia, 154, 185, 190, 193, 258 Areyongalepis,7,64–65 213, 217–218, 220 ammocoete, 30, 40, 51, 56–57, 176, 206, 208, Argentina, 60–61, 67 Acanthodiformes, 14, 68 218 armoured agnathans, 150 Acanthodii, 152 amphiaspids, 5, 27 Arthrodira, 12, 24, 26, 28, 74, 82–84, 86, 194, Acanthomorpha, 20 amphibians, 1, 20, 150, 172, 180–182, 245, 248, 209, 222 Acanthostega, 22, 155–156, 255–258, 260 255–256 arthrodires, 7, 11–13, 22, 28, 71–72, 74–75, Acanthothoraci, 24, 74, 83 amphioxus, 49, 54–55, 124, 145, 155, 157, 159, 80–84, 152, 192, 207, 209, 212–213, 215, Acanthothoracida, 11 206, 224, 243–244, 249–250 219–220 acanthothoracids, 7, 12, 74, 81–82, 211, 215, Amphioxus, 120 Ascl,36 219 Amphystylic, 148 Asiaceratodus,21 -
Identifying Heterogeneity in Rates of Morphological Evolution: Discrete Character Change in the Evolution of Lungfish (Sarcopterygii; Dipnoi)
ORIGINAL ARTICLE doi:10.1111/j.1558-5646.2011.01460.x IDENTIFYING HETEROGENEITY IN RATES OF MORPHOLOGICAL EVOLUTION: DISCRETE CHARACTER CHANGE IN THE EVOLUTION OF LUNGFISH (SARCOPTERYGII; DIPNOI) Graeme T. Lloyd,1,2 Steve C. Wang,3 and Stephen L. Brusatte4,5 1Department of Palaeontology, Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom 2E-mail: [email protected] 3Department of Mathematics and Statistics, Swarthmore College, Swarthmore, Pennsylvania 19081 4Division of Paleontology, American Museum of Natural History, Central Park West at 79th Street, New York, New York 10024 5Department of Earth and Environmental Sciences, Columbia University, New York, New York 10025 Received February 9, 2010 Accepted August 15, 2011 Data Archived: Dryad: doi:10.5061/dryad.pg46f Quantifying rates of morphological evolution is important in many macroevolutionary studies, and critical when assessing possible adaptive radiations and episodes of punctuated equilibrium in the fossil record. However, studies of morphological rates of change have lagged behind those on taxonomic diversification, and most authors have focused on continuous characters and quantifying patterns of morphological rates over time. Here, we provide a phylogenetic approach, using discrete characters and three statistical tests to determine points on a cladogram (branches or entire clades) that are characterized by significantly high or low rates of change. These methods include a randomization approach that identifies branches with significantly high rates and likelihood ratio tests that pinpoint either branches or clades that have significantly higher or lower rates than the pooled rate of the remainder of the tree. As a test case for these methods, we analyze a discrete character dataset of lungfish, which have long been regarded as “living fossils” due to an apparent slowdown in rates since the Devonian. -
Morphology, Phylogeny, and Evolution of Diadectidae (Cotylosauria: Diadectomorpha)
Morphology, Phylogeny, and Evolution of Diadectidae (Cotylosauria: Diadectomorpha) by Richard Kissel A thesis submitted in conformity with the requirements for the degree of doctor of philosophy Graduate Department of Ecology & Evolutionary Biology University of Toronto © Copyright by Richard Kissel 2010 Morphology, Phylogeny, and Evolution of Diadectidae (Cotylosauria: Diadectomorpha) Richard Kissel Doctor of Philosophy Graduate Department of Ecology & Evolutionary Biology University of Toronto 2010 Abstract Based on dental, cranial, and postcranial anatomy, members of the Permo-Carboniferous clade Diadectidae are generally regarded as the earliest tetrapods capable of processing high-fiber plant material; presented here is a review of diadectid morphology, phylogeny, taxonomy, and paleozoogeography. Phylogenetic analyses support the monophyly of Diadectidae within Diadectomorpha, the sister-group to Amniota, with Limnoscelis as the sister-taxon to Tseajaia + Diadectidae. Analysis of diadectid interrelationships of all known taxa for which adequate specimens and information are known—the first of its kind conducted—positions Ambedus pusillus as the sister-taxon to all other forms, with Diadectes sanmiguelensis, Orobates pabsti, Desmatodon hesperis, Diadectes absitus, and (Diadectes sideropelicus + Diadectes tenuitectes + Diasparactus zenos) representing progressively more derived taxa in a series of nested clades. In light of these results, it is recommended herein that the species Diadectes sanmiguelensis be referred to the new genus -
Geological Survey of Ohio
GEOLOGICAL SURVEY OF OHIO. VOL. I.—PART II. PALÆONTOLOGY. SECTION II. DESCRIPTIONS OF FOSSIL FISHES. BY J. S. NEWBERRY. Digital version copyrighted ©2012 by Don Chesnut. THE CLASSIFICATION AND GEOLOGICAL DISTRIBUTION OF OUR FOSSIL FISHES. So little is generally known in regard to American fossil fishes, that I have thought the notes which I now give upon some of them would be more interesting and intelligible if those into whose hands they will fall could have a more comprehensive view of this branch of palæontology than they afford. I shall therefore preface the descriptions which follow with a few words on the geological distribution of our Palæozoic fishes, and on the relations which they sustain to fossil forms found in other countries, and to living fishes. This seems the more necessary, as no summary of what is known of our fossil fishes has ever been given, and the literature of the subject is so scattered through scientific journals and the proceedings of learned societies, as to be practically inaccessible to most of those who will be readers of this report. I. THE ZOOLOGICAL RELATIONS OF OUR FOSSIL FISHES. To the common observer, the class of Fishes seems to be well defined and quite distin ct from all the other groups o f vertebrate animals; but the comparative anatomist finds in certain unusual and aberrant forms peculiarities of structure which link the Fishes to the Invertebrates below and Amphibians above, in such a way as to render it difficult, if not impossible, to draw the lines sharply between these great groups. -
Early Tetrapod Relationships Revisited
Biol. Rev. (2003), 78, pp. 251–345. f Cambridge Philosophical Society 251 DOI: 10.1017/S1464793102006103 Printed in the United Kingdom Early tetrapod relationships revisited MARCELLO RUTA1*, MICHAEL I. COATES1 and DONALD L. J. QUICKE2 1 The Department of Organismal Biology and Anatomy, The University of Chicago, 1027 East 57th Street, Chicago, IL 60637-1508, USA ([email protected]; [email protected]) 2 Department of Biology, Imperial College at Silwood Park, Ascot, Berkshire SL57PY, UK and Department of Entomology, The Natural History Museum, Cromwell Road, London SW75BD, UK ([email protected]) (Received 29 November 2001; revised 28 August 2002; accepted 2 September 2002) ABSTRACT In an attempt to investigate differences between the most widely discussed hypotheses of early tetrapod relation- ships, we assembled a new data matrix including 90 taxa coded for 319 cranial and postcranial characters. We have incorporated, where possible, original observations of numerous taxa spread throughout the major tetrapod clades. A stem-based (total-group) definition of Tetrapoda is preferred over apomorphy- and node-based (crown-group) definitions. This definition is operational, since it is based on a formal character analysis. A PAUP* search using a recently implemented version of the parsimony ratchet method yields 64 shortest trees. Differ- ences between these trees concern: (1) the internal relationships of aı¨stopods, the three selected species of which form a trichotomy; (2) the internal relationships of embolomeres, with Archeria -
Gondwana Vertebrate Faunas of India: Their Diversity and Intercontinental Relationships
438 Article 438 by Saswati Bandyopadhyay1* and Sanghamitra Ray2 Gondwana Vertebrate Faunas of India: Their Diversity and Intercontinental Relationships 1Geological Studies Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India; email: [email protected] 2Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur 721302, India; email: [email protected] *Corresponding author (Received : 23/12/2018; Revised accepted : 11/09/2019) https://doi.org/10.18814/epiiugs/2020/020028 The twelve Gondwanan stratigraphic horizons of many extant lineages, producing highly diverse terrestrial vertebrates India have yielded varied vertebrate fossils. The oldest in the vacant niches created throughout the world due to the end- Permian extinction event. Diapsids diversified rapidly by the Middle fossil record is the Endothiodon-dominated multitaxic Triassic in to many communities of continental tetrapods, whereas Kundaram fauna, which correlates the Kundaram the non-mammalian synapsids became a minor components for the Formation with several other coeval Late Permian remainder of the Mesozoic Era. The Gondwana basins of peninsular horizons of South Africa, Zambia, Tanzania, India (Fig. 1A) aptly exemplify the diverse vertebrate faunas found Mozambique, Malawi, Madagascar and Brazil. The from the Late Palaeozoic and Mesozoic. During the last few decades much emphasis was given on explorations and excavations of Permian-Triassic transition in India is marked by vertebrate fossils in these basins which have yielded many new fossil distinct taxonomic shift and faunal characteristics and vertebrates, significant both in numbers and diversity of genera, and represented by small-sized holdover fauna of the providing information on their taphonomy, taxonomy, phylogeny, Early Triassic Panchet and Kamthi fauna. -
Marine Early Triassic Osteichthyes from Spiti, Indian Himalayas
Swiss J Palaeontol (2016) 135:275–294 DOI 10.1007/s13358-015-0098-6 Marine Early Triassic Osteichthyes from Spiti, Indian Himalayas 1 1 1 1 Carlo Romano • David Ware • Thomas Bru¨hwiler • Hugo Bucher • Winand Brinkmann1 Received: 12 March 2015 / Accepted: 11 August 2015 / Published online: 28 September 2015 Ó Akademie der Naturwissenschaften Schweiz (SCNAT) 2015 Abstract A new, marine osteichthyan (bony fish) fauna strata of other localities. The study of Early Triassic fish from the Early Triassic of northern India is presented. The assemblages, including the presented one, is fundamental material was collected in situ at localities within Pin Valley for our understanding of the great osteichthyan diversifi- (Lahaul and Spiti District, Himachal Pradesh, India) and is cation after the Late Permian mass extinction event. dated as middle-late Dienerian (one specimen possibly earliest Smithian). The new ichthyofauna includes a lower Keywords Neotethys Á Northern Indian Margin Á jaw of the predatory basal ray-finned fish Saurichthys,a Gondwana Á Anoxia Á Biotic recovery Á Urohyal nearly complete specimen of a parasemionotid neoptery- gian (cf. Watsonulus cf. eugnathoides), as well as further Abbreviations articulated and disarticulated remains (Actinopterygii CMNFV Canadian Museum of Nature (Fossil indet., Actinistia indet.), and thus comprises the most Vertebrate), Ottawa, Canada complete Triassic fish fossils known from the Indian sub- MNHN.F Muse´um National d’Histoire Naturelle, Paris, continent. Saurichthys is known from many Triassic France localities and reached a global distribution rapidly after the PIMUZ Pala¨ontologisches Institut und Museum, Late Permian mass extinction event. Parasemionotidae, a Universita¨tZu¨rich, Zu¨rich, Schweiz species-rich family restricted to the Early Triassic, also achieved widespread distribution during this epoch. -
A Redescription of the Lungfish Eoctenodus Hills 1929, with Reassessment of Other Australian Records of the Genus Dipterns Sedgwick & Murchison 1828
Ree. West. Aust. Mus. 1987, 13 (2): 297-314 A redescription of the lungfish Eoctenodus Hills 1929, with reassessment of other Australian records of the genus Dipterns Sedgwick & Murchison 1828. J.A. Long* Abstract Eoctenodus microsoma Hills 1929 (= Dipterus microsoma Hills, 1931) from the Frasnian Blue Range Formation, near Taggerty, Victoria, is found to be a valid genus, differing from Dipterus, and other dipnoans, by the shape of the parasphenoid and toothplates. The upper jaw toothp1ates and entopterygoids, parasphenoid, c1eithrum, anoc1eithrum and scales of Eoctenodus are described. Eoctenodus may represent the earliest member of the Ctenodontidae. Dipterus cf. D. digitatus. from the Late Devonian Gneudna Formation, Western Australia (Seddon, 1969), is assigned to Chirodipterus australis Miles 1977; and Dipterus sp. from the Late Devonian of Gingham Gap, New South Wales (Hills, 1936) is thought to be con generic with a dipnoan of similar age from the Hunter Siltstone, New South Wales. This form differs from Dipterus in the shape of the parasphenoid. The genus Dipterus appears to be restricted to the Middle-Upper Devonian of Europe, North America and the USSR (Laurasia). Introduction Although Hills (1929) recognised a new dipnoan, Eoctenodus microsoma, in the Late Devonian fish remains from the Blue Range Formation, near Taggerty, he later (Hills 1931) altered the generic status of this species after a study trip to Britain in which D,M.S. Watson pointed out similarities between the Australian form and the British genus Dipterus Sedgwick and Murchison 1828. Studies of the head of Dipterus by Westoll (1949) and White (1965) showed the structure of the palate and, in particular, the shape of the parasphenoid which differs from that in the Taggerty dipnoan. -
The Devonian Tetrapod Acanthostega Gunnari Jarvik: Postcranial Anatomy, Basal Tetrapod Interrelationships and Patterns of Skeletal Evolution M
Transactions of the Royal Society of Edinburgh: Earth Sciences, 87, 363-421, 1996 The Devonian tetrapod Acanthostega gunnari Jarvik: postcranial anatomy, basal tetrapod interrelationships and patterns of skeletal evolution M. I. Coates ABSTRACT: The postcranial skeleton of Acanthostega gunnari from the Famennian of East Greenland displays a unique, transitional, mixture of features conventionally associated with fish- and tetrapod-like morphologies. The rhachitomous vertebral column has a primitive, barely differentiated atlas-axis complex, encloses an unconstricted notochordal canal, and the weakly ossified neural arches have poorly developed zygapophyses. More derived axial skeletal features include caudal vertebral proliferation and, transiently, neural radials supporting unbranched and unsegmented lepidotrichia. Sacral and post-sacral ribs reiterate uncinate cervical and anterior thoracic rib morphologies: a simple distal flange supplies a broad surface for iliac attachment. The octodactylous forelimb and hindlimb each articulate with an unsutured, foraminate endoskeletal girdle. A broad-bladed femoral shaft with extreme anterior torsion and associated flattened epipodials indicates a paddle-like hindlimb function. Phylogenetic analysis places Acanthostega as the sister- group of Ichthyostega plus all more advanced tetrapods. Tulerpeton appears to be a basal stem- amniote plesion, tying the amphibian-amniote split to the uppermost Devonian. Caerorhachis may represent a more derived stem-amniote plesion. Postcranial evolutionary trends spanning the taxa traditionally associated with the fish-tetrapod transition are discussed in detail. Comparison between axial skeletons of primitive tetrapods suggests that plesiomorphic fish-like morphologies were re-patterned in a cranio-caudal direction with the emergence of tetrapod vertebral regionalisation. The evolution of digited limbs lags behind the initial enlargement of endoskeletal girdles, whereas digit evolution precedes the elaboration of complex carpal and tarsal articulations. -
Reconstructing Pectoral Appendicular Muscle Anatomy in Fossil Fish and Tetrapods Over the Fins-To-Limbs Transition
Biol. Rev. (2017), pp. 000–000. 1 doi: 10.1111/brv.12386 Reconstructing pectoral appendicular muscle anatomy in fossil fish and tetrapods over the fins-to-limbs transition Julia L. Molnar1,∗ , Rui Diogo2, John R. Hutchinson3 and Stephanie E. Pierce4 1Department of Anatomy, New York Institute of Technology College of Osteopathic Medicine, Northern Boulevard, Old Westbury, NY, U.S.A. 2Department of Anatomy, Howard University College of Medicine, 520 W St. NW, Numa Adams Building, Washington, DC 20059, U.S.A. 3Structure and Motion Lab, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA, UK 4Museum of Comparative Zoology and Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, U.S.A. ABSTRACT The question of how tetrapod limbs evolved from fins is one of the great puzzles of evolutionary biology. While palaeontologists, developmental biologists, and geneticists have made great strides in explaining the origin and early evolution of limb skeletal structures, that of the muscles remains largely unknown. The main reason is the lack of consensus about appendicular muscle homology between the closest living relatives of early tetrapods: lobe-finned fish and crown tetrapods. In the light of a recent study of these homologies, we re-examined osteological correlates of muscle attachment in the pectoral girdle, humerus, radius, and ulna of early tetrapods and their close relatives. Twenty-nine extinct and six extant sarcopterygians were included in a meta-analysis using information from the literature and from original specimens, when possible. We analysed these osteological correlates using parsimony-based character optimization in order to reconstruct muscle anatomy in ancestral lobe-finned fish, tetrapodomorph fish, stem tetrapods, and crown tetrapods. -
Annual Meeting 2002
Newsletter 51 74 Newsletter 51 75 The Palaeontological Association 46th Annual Meeting 15th–18th December 2002 University of Cambridge ABSTRACTS Newsletter 51 76 ANNUAL MEETING ANNUAL MEETING Newsletter 51 77 Holocene reef structure and growth at Mavra Litharia, southern coast of Gulf of Corinth, Oral presentations Greece: a simple reef with a complex message Steve Kershaw and Li Guo Oral presentations will take place in the Physiology Lecture Theatre and, for the parallel sessions at 11:00–1:00, in the Tilley Lecture Theatre. Each presentation will run for a New perspectives in palaeoscolecidans maximum of 15 minutes, including questions. Those presentations marked with an asterisk Oliver Lehnert and Petr Kraft (*) are being considered for the President’s Award (best oral presentation by a member of the MONDAY 11:00—Non-marine Palaeontology A (parallel) Palaeontological Association under the age of thirty). Guts and Gizzard Stones, Unusual Preservation in Scottish Middle Devonian Fishes Timetable for oral presentations R.G. Davidson and N.H. Trewin *The use of ichnofossils as a tool for high-resolution palaeoenvironmental analysis in a MONDAY 9:00 lower Old Red Sandstone sequence (late Silurian Ringerike Group, Oslo Region, Norway) Neil Davies Affinity of the earliest bilaterian embryos The harvestman fossil record Xiping Dong and Philip Donoghue Jason A. Dunlop Calamari catastrophe A New Trigonotarbid Arachnid from the Early Devonian Windyfield Chert, Rhynie, Philip Wilby, John Hudson, Roy Clements and Neville Hollingworth Aberdeenshire, Scotland Tantalizing fragments of the earliest land plants Steve R. Fayers and Nigel H. Trewin Charles H. Wellman *Molecular preservation of upper Miocene fossil leaves from the Ardeche, France: Use of Morphometrics to Identify Character States implications for kerogen formation Norman MacLeod S.