The Surviving Crossopterygian Fish, Latiivieria
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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. -
71St Annual Meeting Society of Vertebrate Paleontology Paris Las Vegas Las Vegas, Nevada, USA November 2 – 5, 2011 SESSION CONCURRENT SESSION CONCURRENT
ISSN 1937-2809 online Journal of Supplement to the November 2011 Vertebrate Paleontology Vertebrate Society of Vertebrate Paleontology Society of Vertebrate 71st Annual Meeting Paleontology Society of Vertebrate Las Vegas Paris Nevada, USA Las Vegas, November 2 – 5, 2011 Program and Abstracts Society of Vertebrate Paleontology 71st Annual Meeting Program and Abstracts COMMITTEE MEETING ROOM POSTER SESSION/ CONCURRENT CONCURRENT SESSION EXHIBITS SESSION COMMITTEE MEETING ROOMS AUCTION EVENT REGISTRATION, CONCURRENT MERCHANDISE SESSION LOUNGE, EDUCATION & OUTREACH SPEAKER READY COMMITTEE MEETING POSTER SESSION ROOM ROOM SOCIETY OF VERTEBRATE PALEONTOLOGY ABSTRACTS OF PAPERS SEVENTY-FIRST ANNUAL MEETING PARIS LAS VEGAS HOTEL LAS VEGAS, NV, USA NOVEMBER 2–5, 2011 HOST COMMITTEE Stephen Rowland, Co-Chair; Aubrey Bonde, Co-Chair; Joshua Bonde; David Elliott; Lee Hall; Jerry Harris; Andrew Milner; Eric Roberts EXECUTIVE COMMITTEE Philip Currie, President; Blaire Van Valkenburgh, Past President; Catherine Forster, Vice President; Christopher Bell, Secretary; Ted Vlamis, Treasurer; Julia Clarke, Member at Large; Kristina Curry Rogers, Member at Large; Lars Werdelin, Member at Large SYMPOSIUM CONVENORS Roger B.J. Benson, Richard J. Butler, Nadia B. Fröbisch, Hans C.E. Larsson, Mark A. Loewen, Philip D. Mannion, Jim I. Mead, Eric M. Roberts, Scott D. Sampson, Eric D. Scott, Kathleen Springer PROGRAM COMMITTEE Jonathan Bloch, Co-Chair; Anjali Goswami, Co-Chair; Jason Anderson; Paul Barrett; Brian Beatty; Kerin Claeson; Kristina Curry Rogers; Ted Daeschler; David Evans; David Fox; Nadia B. Fröbisch; Christian Kammerer; Johannes Müller; Emily Rayfield; William Sanders; Bruce Shockey; Mary Silcox; Michelle Stocker; Rebecca Terry November 2011—PROGRAM AND ABSTRACTS 1 Members and Friends of the Society of Vertebrate Paleontology, The Host Committee cordially welcomes you to the 71st Annual Meeting of the Society of Vertebrate Paleontology in Las Vegas. -
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. -
Giant Fossil Coelacanths from the Late Cretaceous of the Eastern
^rfij^i^v^^™, - » v ' - - 4 j/ N ^P"" ,- V ^™ V- -*^ >•;:-* ' ^ * -r;' David R. Schwimmer, Geologist, Columbus State University Introduction In Autumn, 1987, a sizeable mass of fossil bone was discovered by amateur collectors in the bed of a small creek in eastern Alabama. The bone-bearing rock, some 300 kg in weight, was collected by a party led by G. Dent Williams and transferred to the paleontology laboratory at Columbus State University. Williams prepared most of the material using air percussion tools, and I further cleared some bones with acetic acid. A mandible (lower jaw bone) of 502 mm length was the first bone prepared from the material. It strangely lacked evidence of both teeth and tooth sockets, and it was covered medially with coarse denticulation resembling #40 grit sandpaper. The jawbone conformed with no recognizable North American Late Cretaceous fish or four-legged animal, and, given the large size of the mandible, my initial search for an identification ranged from ankylosaurid dinosaurs, to mosasaurs, to the larger contemporary fish, such as Xiphactinus. Nothing known in the Late Cretaceous of North America matched the mandible nor any other bone which was subsequently prepared from this matrix. J.D. Stewart of the L.A. County Museum was prior fossil record of a North American coelacanth is concurrently studying fossils of small marine Diplurus newarki, from freshwater deposits of earliest coelacanths from the Late Cretaceous of western Kansas, Jurassic age (ca. 205 Myr.: Schaeffer, 1941, 1952). USA (which were also a new discovery at the time: see Forey (1981) and Maisey (1991) recognized two sub- Stewart et al., 1991). -
I Ecomorphological Change in Lobe-Finned Fishes (Sarcopterygii
Ecomorphological change in lobe-finned fishes (Sarcopterygii): disparity and rates by Bryan H. Juarez A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science (Ecology and Evolutionary Biology) in the University of Michigan 2015 Master’s Thesis Committee: Assistant Professor Lauren C. Sallan, University of Pennsylvania, Co-Chair Assistant Professor Daniel L. Rabosky, Co-Chair Associate Research Scientist Miriam L. Zelditch i © Bryan H. Juarez 2015 ii ACKNOWLEDGEMENTS I would like to thank the Rabosky Lab, David W. Bapst, Graeme T. Lloyd and Zerina Johanson for helpful discussions on methodology, Lauren C. Sallan, Miriam L. Zelditch and Daniel L. Rabosky for their dedicated guidance on this study and the London Natural History Museum for courteously providing me with access to specimens. iii TABLE OF CONTENTS ACKNOWLEDGEMENTS ii LIST OF FIGURES iv LIST OF APPENDICES v ABSTRACT vi SECTION I. Introduction 1 II. Methods 4 III. Results 9 IV. Discussion 16 V. Conclusion 20 VI. Future Directions 21 APPENDICES 23 REFERENCES 62 iv LIST OF TABLES AND FIGURES TABLE/FIGURE II. Cranial PC-reduced data 6 II. Post-cranial PC-reduced data 6 III. PC1 and PC2 Cranial and Post-cranial Morphospaces 11-12 III. Cranial Disparity Through Time 13 III. Post-cranial Disparity Through Time 14 III. Cranial/Post-cranial Disparity Through Time 15 v LIST OF APPENDICES APPENDIX A. Aquatic and Semi-aquatic Lobe-fins 24 B. Species Used In Analysis 34 C. Cranial and Post-Cranial Landmarks 37 D. PC3 and PC4 Cranial and Post-cranial Morphospaces 38 E. PC1 PC2 Cranial Morphospaces 39 1-2. -
Giant Mesozoic Coelacanths (Osteichthyes, Actinistia) Reveal High Body Size Disparity Decoupled from Taxic Diversity
Giant Mesozoic Coelacanths (Osteichthyes, Actinistia) Reveal High Body Size Disparity Decoupled From Taxic Diversity Lionel Cavin ( [email protected] ) Natural History Museum of Geneva André Piuz Natural History Museum of Geneva Christophe Ferrante Natural History Museum of Geneva Guillaume Guinot Institut des Sciences de l'Evolution de Montpellier Research Article Keywords: morphological evolution, taxic diversication, Genomic and physiological characteristics Posted Date: March 2nd, 2021 DOI: https://doi.org/10.21203/rs.3.rs-245480/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License 1 2 Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high 3 body size disparity decoupled from taxic diversity 4 5 Lionel Cavin1*, André Piuz1, Christophe Ferrante1,2 & Guillaume Guinot3 6 7 8 1 Department of Geology and Palaeontology, Natural History Museum of Geneva, Geneva, 9 Switzerland 10 2 Department of Earth Sciences, University of Geneva, Rue des Maraîchais 13, 1205 Genève, 11 Switzerland 12 3 Institut des Sciences de l’Evolution de Montpellier (Université de Montpellier, CNRS, IRD, 13 EPHE), Montpellier, France 14 15 * Corresponding author 16 Email: [email protected] 17 1 18 Abstract 19 20 The positive correlation between speciation rates and morphological evolution expressed by 21 body size is a macroevolutionary trait of vertebrates. Although taxic diversification and 22 morphological evolution are slow in coelacanths, their fossil record indicates that large and 23 small species coexisted, which calls into question the link between morphological and body 24 size disparities. Here, we describe and reassess fossils of giant coelacanths. Two genera 25 reached up to 5 meters long, placing them among the ten largest bony fish that ever lived. -
New Coelacanth Material from the Middle Triassic of Eastern Switzerland, and Comments on the Taxic Diversity of Actinistans
Swiss J Geosci (2013) 106:161–177 DOI 10.1007/s00015-013-0143-7 New coelacanth material from the Middle Triassic of eastern Switzerland, and comments on the taxic diversity of actinistans Lionel Cavin • Heinz Furrer • Christian Obrist Received: 1 February 2013 / Accepted: 9 August 2013 / Published online: 16 November 2013 Ó Swiss Geological Society 2013 Abstract New coelacanth material from the Middle Tri- preserved on the holotype and allows the addition of new assic Prosanto Formation of the Ducan and Landwasser characters to a previously published data matrix of acti- area near Davos in eastern Switzerland, Canton Graubu¨n- nistians. A phylogenetic analysis is performed, which den, is described. A sub-complete individual is visible in supports that Ticinepomis is nested among the Latimeri- ventral view, and shows details of its branchial apparatus. idae. The diversity of post-Palaeozoic coelacanths is In particular, it possesses relatively large teeth on the assessed. The taxic diversity of observed occurrences ceratobranchials, and possible ossified hypobranchials. shows a peak in the Early Triassic and a peak in the Late Few diagnostic characters are observable, and most of them Jurassic, as detected in previous studies. When ghost lin- are visible on the mandibles preserved in lateral view. This eages are included in the computation, the Late Jurassic specimen shares characters with Ticinepomis peyeri,a peak is smoothened. By comparing the taxic diversity smaller form from the Middle Triassic of Monte San curves with the curve of average ghost lineage duration, we Giorgio, whose holotype is re-described in part here. A conclude that the Early Triassic peak of diversity was second specimen, a fragmentary caudal skeleton shows the probably caused by a biological radiation, whereas the Late typical supplementary lobe of coelacanths, and meristic Jurassic peak of observed diversity is probably the result of characters indicating probable close affinities with T. -
Heterochronic Evolution Explains Novel Body Shape in a Triassic
www.nature.com/scientificreports OPEN Heterochronic evolution explains novel body shape in a Triassic coelacanth from Switzerland Received: 5 June 2017 Lionel Cavin 1, Bastien Mennecart 2, Christian Obrist3, Loïc Costeur2 & Heinz Furrer4 Accepted: 2 October 2017 A bizarre latimeriid coelacanth fsh from the Middle Triassic of Switzerland shows skeletal features Published: xx xx xxxx deviating from the uniform anatomy of coelacanths. The new form is closely related to a modern- looking coelacanth found in the same locality and diferences between both are attributed to heterochronic evolution. Most of the modifed osteological structures in the new coelacanth have their developmental origin in the skull/trunk interface region in the embryo. Change in the expression of developmental patterning genes, specifcally the Pax1/9 genes, may explain a rapid evolution at the origin of the new coelacanth. This species broadens the morphological disparity range within the lineage of these ‘living fossils’ and exemplifes a case of rapid heterochronic evolution likely trigged by minor changes in gene expression. Coelacanth fshes, or actinistians, are represented by the living genus Latimeria and by about 50 extinct genera ranging from the Early Devonian to the Late Cretaceous. Te extant coelacanths are commonly qualifed as ‘liv- ing fossils’ because of the monotonous morphological disparity they display during their evolutionary history. Indeed anatomically modern coelacanths are known since the Early Devonian1 and only a few morphological deviating genera are recorded in the Middle – Late Devonian and in the Early Carboniferous2. Here, we describe a coelacanth from the Middle Triassic of Switzerland which shows highly derived anatomical features in the posterior moiety of the skull, the pectoral girdle and the lower jaw. -
Dobrogeria Aegyssensis, a New Early Spathian (Early Triassic) Coelacanth from North Dobrogea (Romania)
DE DE GRUYTER Acta Geologica Polonica, Vol. 64 (2014), No. 2, pp. 161–187 OPEN DOI: 10.2478/agp-2014-0010 G Dobrogeria aegyssensis, a new early Spathian (Early Triassic) coelacanth from North Dobrogea (Romania) LIONEL CAVIN1 AND EUGEN GRĂDINARU2 1Department of Geology and Palaeontology, Natural History Museum, CP 6434, 1211 Geneva 6, Switzerland. E-mail: [email protected] 2Department of Geology, Faculty of Geology and Geophysics, University of Bucharest, Blvd. Bălcescu Nicolae 1, RO-010041 Bucharest, Romania. E-mail: [email protected] ABSTRACT: Cavin, L. and Grădinaru, E. 2014. Dobrogeria aegyssensis, a new early Spathian (Early Triassic) coelacanth from North Dobrogea (Romania). Acta Geologica Polonica, 64 (2), 161–187. Warszawa. The Early Triassic witnessed the highest taxic diversity of coelacanths (or Actinistia), a clade with a single liv- ing genus today. This peak of diversity is accentuated here with the description of a new coelacanth discovered in the lower Spathian (Upper Olenekian, Lower Triassic) cropping out in the Tulcea Veche (Old Tulcea) promon- tory, in the city of Tulcea, in North Dobrogea, Romania. The bone remains were preserved in a block of limestone, which was chemically dissolved. The resulting 3D and matrix-free ossifications correspond mostly to elements of the skull and branchial apparatus. Posterior parietals, postparietal with associated prootic and basisphenoid allow a precise description of the neurocranium. Ossifications of the lower jaw, together with branchial and pec- toral elements, complete the description of this coelacanth and support the coining of a new generic and specific name, Dobrogeria aegyssensis. A phylogenetic analysis of actinistians with the new species recovers clades which were found in most recent analyses, i.e. -
Universidade Do Estado Do Rio De Janeiro Centro Biomédico Instituto De Biologia Roberto Alcântara Gomes
Universidade do Estado do Rio de Janeiro Centro Biomédico Instituto de Biologia Roberto Alcântara Gomes Raphael Miguel da Silva Biogeografia Histórica de Celacantos (Sarcopterygii: Actinistia) Rio de Janeiro 2016 Raphael Miguel da Silva Biogeografia Histórica de Celacantos (Sarcopterygii: Actinistia) Tese apresentada, como requisito parcial para obtenção do título de Doutor, ao Programa de Pós-graduação em Ecologia e Evolução, da Universidade do Estado do Rio de Janeiro. Orientadora: Prof.a Dra. Valéria Gallo da Silva Rio de Janeiro 2016 CATALOGAÇÃO NA FONTE UERJ / REDE SIRIUS / BIBLIOTECA CTC-A SS586XXX Silva, Raphael Miguel da. Biogeografia histórica de Celacantos (Sarcopterygii: Actinistia) / Raphael Miguel da Silva. - 2016. 271 f. : il. Orientador: Valéria Gallo da Silva. Tese (Doutorado em Ecologia e Evolução) - Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes. 1. Biologia marinha - Teses. 2. Peixe – Teses. I. Silva, Valéria Gallo. II. Universidade do Estado do Rio de Janeiro. Instituto de Biologia Roberto Alcântara Gomes. III. Título. CDU 504.4 Autorizo para fins acadêmicos e científicos, a reprodução total ou parcial desta tese, desde que citada a fonte. ___________________________ ________________________ Assinatura Data Raphael Miguel da Silva Biogeografia Histórica de Celacantos (Sarcopterygii: Actinistia) Tese apresentada, como requisito parcial para obtenção do título de Doutor, ao Programa de Pós-graduação em Ecologia e Evolução, da Universidade do Estado do Rio de Janeiro. Aprovada em 15 de fevereiro de 2016. Orientadora: Prof.a Dra. Valéria Gallo da Silva Instituto de Biologia Roberto Alcantara Gomes - UERJ Banca Examinadora: ____________________________________________ Prof. Dr. Paulo Marques Machado Brito Instituto de Biologia Roberto Alcantara Gomes - UERJ ____________________________________________ Prof.ª Dra. -
Family-Group Names of Fossil Fishes
European Journal of Taxonomy 466: 1–167 ISSN 2118-9773 https://doi.org/10.5852/ejt.2018.466 www.europeanjournaloftaxonomy.eu 2018 · Van der Laan R. This work is licensed under a Creative Commons Attribution 3.0 License. Monograph urn:lsid:zoobank.org:pub:1F74D019-D13C-426F-835A-24A9A1126C55 Family-group names of fossil fishes Richard VAN DER LAAN Grasmeent 80, 1357JJ Almere, The Netherlands. Email: [email protected] urn:lsid:zoobank.org:author:55EA63EE-63FD-49E6-A216-A6D2BEB91B82 Abstract. The family-group names of animals (superfamily, family, subfamily, supertribe, tribe and subtribe) are regulated by the International Code of Zoological Nomenclature. Particularly, the family names are very important, because they are among the most widely used of all technical animal names. A uniform name and spelling are essential for the location of information. To facilitate this, a list of family- group names for fossil fishes has been compiled. I use the concept ‘Fishes’ in the usual sense, i.e., starting with the Agnatha up to the †Osteolepidiformes. All the family-group names proposed for fossil fishes found to date are listed, together with their author(s) and year of publication. The main goal of the list is to contribute to the usage of the correct family-group names for fossil fishes with a uniform spelling and to list the author(s) and date of those names. No valid family-group name description could be located for the following family-group names currently in usage: †Brindabellaspidae, †Diabolepididae, †Dorsetichthyidae, †Erichalcidae, †Holodipteridae, †Kentuckiidae, †Lepidaspididae, †Loganelliidae and †Pituriaspididae. Keywords. Nomenclature, ICZN, Vertebrata, Agnatha, Gnathostomata. -
New Materials of a Cretaceous Coelacanth, Mawsonia Lavocati Tabaste from Morocco
Bull. Natn. Sci. Mus., Tokyo, Ser. C, 31, pp. 39–49, December 22, 2005 New Materials of a Cretaceous Coelacanth, Mawsonia lavocati Tabaste from Morocco Yoshitaka Yabumoto1 and Teruya Uyeno2 1 Kitakyushu Museum of Natural History and Human History, 2–4–1, Higashida, Yahatahigasiku, Kitakyushu, Fukuoka, 805–0071, Japan 2 Department of Geology and Paleontology, National Science Museum, 3–23–1, Hyakunin-cho, Shinjuku-ku, Tokyo, 169–0073, Japan Abstract New materials of coelacanth, Mawsonia lavocati and cf. Mawsonia lavocati from the Albian beds in Morocco are described here. They are a part of the cranium, palate, lower jaw, lachrymojugal, and operculum. The almost complete ethmosphenoid portion of the braincase, postparietal, and dentary of M. lavocati are described here for the first time. Key words : coelacanth, Mawsonia lavocati, Mawsoniidae, Morocco. Mawsonia lavocati Tabaste, 1963 Introduction Materials.—NSM (National Science Muse- Six species of the coelacanth genus Mawsonia um, Tokyo)-PV 20994, an almost complete eth- have been found from the Cretaceous beds of mosphenoid portion of braincase; NSM-PV South America and Africa (Forey, 1998; Yabu- 20995, a postparietal; NSM-PV 20996, a den- moto, 2002), of which, M. lavocati was de- tary; NSM-PV 20997, an angular. scribed on the basis of an angular from the Al- Locality.—Kem-Kem, Morocco. bian bed in Morocco (Tabaste, 1963). Further Age.—Albian, Cretaceous. Sereno et al. fragmentary cranial materials were described (1996) regarded the Kem Kem beds as Cenoman- from the Albian of Algeria (Wenz, 1981) and ian in age on the basis of a shark assemblage, but Morocco (Cavin and Forey, 2004).