Re-Description of the Sauropod Dinosaur Amanzia (“Ornithopsis
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
The Braincase, Brain and Palaeobiology of the Basal Sauropodomorph Dinosaur Thecodontosaurus Antiquus
applyparastyle “fig//caption/p[1]” parastyle “FigCapt” Zoological Journal of the Linnean Society, 2020, XX, 1–22. With 10 figures. Downloaded from https://academic.oup.com/zoolinnean/advance-article/doi/10.1093/zoolinnean/zlaa157/6032720 by University of Bristol Library user on 14 December 2020 The braincase, brain and palaeobiology of the basal sauropodomorph dinosaur Thecodontosaurus antiquus ANTONIO BALLELL1,*, J. LOGAN KING1, JAMES M. NEENAN2, EMILY J. RAYFIELD1 and MICHAEL J. BENTON1 1School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK 2Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, UK Received 27 May 2020; revised 15 October 2020; accepted for publication 26 October 2020 Sauropodomorph dinosaurs underwent drastic changes in their anatomy and ecology throughout their evolution. The Late Triassic Thecodontosaurus antiquus occupies a basal position within Sauropodomorpha, being a key taxon for documenting how those morphofunctional transitions occurred. Here, we redescribe the braincase osteology and reconstruct the neuroanatomy of Thecodontosaurus, based on computed tomography data. The braincase of Thecodontosaurus shares the presence of medial basioccipital components of the basal tubera and a U-shaped basioccipital–parabasisphenoid suture with other basal sauropodomorphs and shows a distinct combination of characters: a straight outline of the braincase floor, an undivided metotic foramen, an unossified gap, large floccular fossae, basipterygoid processes perpendicular to the cultriform process in lateral view and a rhomboid foramen magnum. We reinterpret these braincase features in the light of new discoveries in dinosaur anatomy. Our endocranial reconstruction reveals important aspects of the palaeobiology of Thecodontosaurus, supporting a bipedal stance and cursorial habits, with adaptations to retain a steady head and gaze while moving. -
By HENRY FAIRFIELD OSBORN and CHARL
VoL. 6, 1920 PALAEONTOLOGY: OSBORN AND MOOK IS RECONSTRUCTION OF THE SKELETON OF THE SAUROPOD DINOSAUR CAMARASA URUS COPE (MOROSA URUS MARSH) By HENRY FAIRFIELD OSBORN AND CHARLES CRAIG MOOK AMERICAN MusEUM or NATURAL HISTORY, NEW YORK CITY Read before the Academy, November 11, 1919 The principles of modern research in vertebrate palaeontology are illustrated in the fifteen years' work resulting in the restoration of the massive sauropod dinosaur known as Camarasaurus, the "chambered saurian.." The animal was found near Canyon City, Colorado, in March, 1877. The first bones were described by Cope, August 23, 1877. The first at- tempted restoration was by Ryder, December 21, 1877. The bones analyzed by this research were found probably to belong to six individuals of Camarasaurus mingled with the remains of some carnivorous dinosaurs, all from the summit of the Morrison formation, now regarded as of Jurassic- Cretaceous age. In these two quarries Cope named nine new genera and fourteen new species of dinosaurs, none of which have found their way into. palaeontologic literature, excepting Camarasaurus. Out of these twenty-three names we unravel three genera, namely: One species of Camarasaurus, identical with Morosaurus Marsh. One species of Amphicaclias, close to Diplodocus Marsh. One species of Epanterias, close to Allosaurus Marsh. The working out of the Camarasaurus skeleton results in both the artica ulated restoration and the restoration of the musculature. The following are the principal characters: The neck is very flexible; anterior vertebrae of the back also freely movable; the division between the latter and the relatively rigid posterior dorsals is sharp. -
Dino Cards Project D E F List B
Daanosaurus Efraasia Dacentrurus Einiosaurus "Dachongosaurus" – nomen nudum Ekrixinatosaurus Daemonosaurus Elachistosuchus – a rhynchocephalian Dahalokely Elaltitan Dakosaurus – a metriorhynchid crocodilian Elaphrosaurus Dakotadon Elmisaurus Dakotaraptor Elopteryx - nomen dubium Daliansaurus Elosaurus – junior synonym of Brontosaurus "Damalasaurus" – nomen nudum Elrhazosaurus Dandakosaurus - nomen dubium "Elvisaurus" – nomen nudum; Cryolophosaurus Danubiosaurus – junior synonym of Struthiosaurus Emausaurus "Daptosaurus" – nomen nudum; early manuscript name for Deinonychus Embasaurus - theropoda incertae sedis Darwinsaurus - possible junior synonym of Huxleysaurus Enigmosaurus Dashanpusaurus Eoabelisaurus Daspletosaurus Eobrontosaurus – junior synonym of Brontosaurus Dasygnathoides – a non-dinosaurian archosaur, junior synonym Eocarcharia of Ornithosuchus Eoceratops – junior synonym of Chasmosaurus "Dasygnathus" – preoccupied name, now known as Dasygnathoides Eocursor Datanglong Eodromaeus Datonglong "Eohadrosaurus" – nomen nudum; Eolambia Datousaurus Eolambia Daurosaurus – synonym of Kulindadromeus Eomamenchisaurus Daxiatitan Eoplophysis - Dinosauria indet. Deinocheirus Eoraptor Deinodon – possibly Gorgosaurus Eosinopteryx - Avialae Deinonychus Eotrachodon Delapparentia - probable junior synonym of Iguanodon Eotriceratops Deltadromeus Eotyrannus Demandasaurus Eousdryosaurus Denversaurus Epachthosaurus Deuterosaurus – a therapsid Epanterias – may be Allosaurus Diabloceratops "Ephoenosaurus" – nomen nudum; Machimosaurus (a crocodilian) Diamantinasaurus -
The Origin and Early Evolution of Dinosaurs
Biol. Rev. (2010), 85, pp. 55–110. 55 doi:10.1111/j.1469-185X.2009.00094.x The origin and early evolution of dinosaurs Max C. Langer1∗,MartinD.Ezcurra2, Jonathas S. Bittencourt1 and Fernando E. Novas2,3 1Departamento de Biologia, FFCLRP, Universidade de S˜ao Paulo; Av. Bandeirantes 3900, Ribeir˜ao Preto-SP, Brazil 2Laboratorio de Anatomia Comparada y Evoluci´on de los Vertebrados, Museo Argentino de Ciencias Naturales ‘‘Bernardino Rivadavia’’, Avda. Angel Gallardo 470, Cdad. de Buenos Aires, Argentina 3CONICET (Consejo Nacional de Investigaciones Cient´ıficas y T´ecnicas); Avda. Rivadavia 1917 - Cdad. de Buenos Aires, Argentina (Received 28 November 2008; revised 09 July 2009; accepted 14 July 2009) ABSTRACT The oldest unequivocal records of Dinosauria were unearthed from Late Triassic rocks (approximately 230 Ma) accumulated over extensional rift basins in southwestern Pangea. The better known of these are Herrerasaurus ischigualastensis, Pisanosaurus mertii, Eoraptor lunensis,andPanphagia protos from the Ischigualasto Formation, Argentina, and Staurikosaurus pricei and Saturnalia tupiniquim from the Santa Maria Formation, Brazil. No uncontroversial dinosaur body fossils are known from older strata, but the Middle Triassic origin of the lineage may be inferred from both the footprint record and its sister-group relation to Ladinian basal dinosauromorphs. These include the typical Marasuchus lilloensis, more basal forms such as Lagerpeton and Dromomeron, as well as silesaurids: a possibly monophyletic group composed of Mid-Late Triassic forms that may represent immediate sister taxa to dinosaurs. The first phylogenetic definition to fit the current understanding of Dinosauria as a node-based taxon solely composed of mutually exclusive Saurischia and Ornithischia was given as ‘‘all descendants of the most recent common ancestor of birds and Triceratops’’. -
Black Mesa Now Open New Dinosaur Discovered
THE UNIVERSITY OF OKLAHOMA TracksSpring 2011 Newsletter, Volume 23, Number 1 BLACK MESA NOW OPEN Whitten-Newman Foundation Funds Exhibit NEW DINOSAUR DISCOVERED Meet Brontomerus mcintoshi, “Thunder Thighs” ARCHAEOLOGY CURATOR TO RETIRE A Conversation with Don Wyckoff CONTENTS MUSEUM EVENTS AND HIGHLIGHTS DONATION: PAGE 3 EXHIBIT: PAGES 4-5 COLLECTIONS PAGES: 6-7 COMING UP: PAGE 11 NEWS: PAGES: 12-13 features & departments FROM THE DIRECTOR ………… 2 CURATOR ………………………… 8-9 NEWS ……………………………… 12-13 Thanks to Museum Members and Archaeology Curator Don Wyckoff Old Field Jacket Yields New Donors to Retire Species Wyckoff Receives Citation of Merit DONATION …………………………… 3 EDUCATION ……………………… 10 Redbud Café Welcomes New Whitten-Newman Foundation Funds Education Grants Fund Programs Chef Exhibit Former Curator Sidney DeVere UPCOMING EVENTS ………… 11 Brown Dies EXHIBIT ……………………………… 4-5 Art and the Animal Museum Welcomes 2011 Black Mesa Exhibit Open Summer Explorers Corporate Partners Baby Apatosaurus Longtime Volunteers Pass On COLLECTIONS ………………… 6-7 Bill Miller Named Volunteer of New ‘Thunder-Thighs’ Dinosaur the Year Discovered TRACKS, SPRING 2011 : VOLUME 23 NO. 1 1 FROM THE DIRECTOR Dear Members and Friends, On March 4 we had a very special ribbon cutting reception for our newest permanent exhibit in the museum—Black Mesa. We started this project in the 1990s, but the construction of this exhibit was made possible by a $1 million gift from Reggie and Rachelle Whitten and the Whitten-Newman Foundation. Located in the Hall of Natural Wonders, Black Mesa is a 1,500 square foot diorama of Oklahoma’s Panhandle, home to the highest elevation in the state. When you walk into the Hall of Natural Wonders, you can now view major habitats of our state from the forest to the prairie to the Black Mesa. -
Dinosaur Discovered (W/ Video) 23 February 2011
New 'thunder-thighs' dinosaur discovered (w/ Video) 23 February 2011 speculate that the larger specimen is the mother of the younger and would have weighed around 6 tons, about the size of a large elephant, and measured 14 meters in length. At a third of the size, the smaller specimen would have weighed about 200 kg, the size of a pony, and been 4.5 m long. The authors classified the new genus based on an incomplete skeleton including bones from the shoulder, hip, ribs, vertebrae and some unidentifiable fragments. They used the bones to identify Brontomerus' unique features, primarily the Brontomerus mcintoshi is a newly discovered dinosaur shape of the ilium (hip bone), which, in the case of from the Early Cretaceous of North America. The name Brontomerus means "Thunder thighs" -- a name chosen Brontomerus, is unusually large in comparison to because the peculiar shape of the hip bone shows that it that of similar dinosaurs. The wide, blade-shaped would have had enormously powerful thigh muscles in bone projects forward ahead of the hip socket, life. providing a proportionally massive area for the attachment of muscles. The shape of the bone indicates that the animal (PhysOrg.com) -- A new dinosaur named would likely have had the largest leg muscles of Brontomerus mcintoshi, or "thunder-thighs" after its any dinosaur in the sauropod family. This is enormously powerful thigh muscles, has been reflected in the name Brontomerus, which literally discovered in Utah, USA. The new species is means "thunder-thighs." The dinosaur's species described in a paper recently published in the name, mcintoshi, was chosen in honor of John journal Acta Palaeontologica Polonica by an "Jack" McIntosh, a retired physicist at Wesleyan international team of scientists from the U.K. -
Neural Spine Bifurcation in Sauropods Palarch’S Journal of Vertebrate Palaeontology, 10(1) (2013)
Wedel & Taylor, Neural Spine Bifurcation in Sauropods PalArch’s Journal of Vertebrate Palaeontology, 10(1) (2013) NEURAL SPINE BIFURCATION IN SAUROPOD DINOSAURS OF THE MORRISON FORMATION: ONTOGENETIC AND PHYLOGENETIC IMPLICATIONS Mathew J. Wedel* & Michael P. Taylor# *Corresponding author. College of Osteopathic Medicine of the Pacific and College of Podiatric Medicine, Western University of Health Sciences, 309 E. Second Street, Pomona, California 91766-1854, USA. [email protected] #Department of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK. [email protected] Wedel, Mathew J. & Michael P. Taylor. 2013. Neural Spine Bifurcation in Sauropod Dinosaurs of the Morrison Formation: Ontogenetic and Phylogenetic Implications. – Pal- arch’s Journal of Vertebrate Palaeontology 10(1) (2013), 1-34. ISSN 1567-2158. 34 pages + 25 figures, 2 tables. Keywords: sauropod, vertebra, neural spine, ontogeny, Morrison Formation AbsTrAcT It has recently been argued that neural spine bifurcation increases through ontogeny in several Morrison Formation sauropods, that recognition of ontogenetic transforma- tion in this ‘key character’ will have sweeping implications for sauropod phylogeny, and that Suuwassea and Haplocanthosaurus in particular are likely to be juveniles of known diplodocids. However, we find that serial variation in sauropod vertebrae can mimic on- togenetic change and is therefore a powerful confounding factor, especially when deal- ing with isolated elements whose serial position cannot be determined. When serial po- sition is taken into account, there is no evidence that neural spine bifurcation increased over ontogeny in Morrison Formation diplodocids. Through phylogenetic analysis we show that neural spine bifurcation is not a key character in sauropod phylogeny and that Suuwassea and Haplocanthosaurus are almost certainly not juveniles of known diplodo- cids. -
The Sauropodomorph Biostratigraphy of the Elliot Formation of Southern Africa: Tracking the Evolution of Sauropodomorpha Across the Triassic–Jurassic Boundary
Editors' choice The sauropodomorph biostratigraphy of the Elliot Formation of southern Africa: Tracking the evolution of Sauropodomorpha across the Triassic–Jurassic boundary BLAIR W. MCPHEE, EMESE M. BORDY, LARA SCISCIO, and JONAH N. CHOINIERE McPhee, B.W., Bordy, E.M., Sciscio, L., and Choiniere, J.N. 2017. The sauropodomorph biostratigraphy of the Elliot Formation of southern Africa: Tracking the evolution of Sauropodomorpha across the Triassic–Jurassic boundary. Acta Palaeontologica Polonica 62 (3): 441–465. The latest Triassic is notable for coinciding with the dramatic decline of many previously dominant groups, followed by the rapid radiation of Dinosauria in the Early Jurassic. Among the most common terrestrial vertebrates from this time, sauropodomorph dinosaurs provide an important insight into the changing dynamics of the biota across the Triassic–Jurassic boundary. The Elliot Formation of South Africa and Lesotho preserves the richest assemblage of sauropodomorphs known from this age, and is a key index assemblage for biostratigraphic correlations with other simi- larly-aged global terrestrial deposits. Past assessments of Elliot Formation biostratigraphy were hampered by an overly simplistic biozonation scheme which divided it into a lower “Euskelosaurus” Range Zone and an upper Massospondylus Range Zone. Here we revise the zonation of the Elliot Formation by: (i) synthesizing the last three decades’ worth of fossil discoveries, taxonomic revision, and lithostratigraphic investigation; and (ii) systematically reappraising the strati- graphic provenance of important fossil locations. We then use our revised stratigraphic information in conjunction with phylogenetic character data to assess morphological disparity between Late Triassic and Early Jurassic sauropodomorph taxa. Our results demonstrate that the Early Jurassic upper Elliot Formation is considerably more taxonomically and morphologically diverse than previously thought. -
A Basal Lithostrotian Titanosaur (Dinosauria: Sauropoda) with a Complete Skull: Implications for the Evolution and Paleobiology of Titanosauria
RESEARCH ARTICLE A Basal Lithostrotian Titanosaur (Dinosauria: Sauropoda) with a Complete Skull: Implications for the Evolution and Paleobiology of Titanosauria Rubén D. F. Martínez1*, Matthew C. Lamanna2, Fernando E. Novas3, Ryan C. Ridgely4, Gabriel A. Casal1, Javier E. Martínez5, Javier R. Vita6, Lawrence M. Witmer4 1 Laboratorio de Paleovertebrados, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut, Argentina, 2 Section of Vertebrate Paleontology, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, United States of America, 3 Laboratorio de Anatomía Comparada y Evolución de los Vertebrados, Museo Argentino de Ciencias Naturales, Buenos Aires, Argentina, 4 Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, United States of America, 5 Hospital Regional de Comodoro Rivadavia, Comodoro Rivadavia, Chubut, Argentina, 6 Resonancia Magnética Borelli, Comodoro Rivadavia, Chubut, Argentina * [email protected] OPEN ACCESS Citation: Martínez RDF, Lamanna MC, Novas FE, Ridgely RC, Casal GA, Martínez JE, et al. (2016) A Basal Lithostrotian Titanosaur (Dinosauria: Abstract Sauropoda) with a Complete Skull: Implications for the Evolution and Paleobiology of Titanosauria. PLoS We describe Sarmientosaurus musacchioi gen. et sp. nov., a titanosaurian sauropod dino- ONE 11(4): e0151661. doi:10.1371/journal. saur from the Upper Cretaceous (Cenomanian—Turonian) Lower Member of the Bajo Bar- pone.0151661 real Formation of southern Chubut Province in -
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. -
Titanosauriform Teeth from the Cretaceous of Japan
“main” — 2011/2/10 — 15:59 — page 247 — #1 Anais da Academia Brasileira de Ciências (2011) 83(1): 247-265 (Annals of the Brazilian Academy of Sciences) Printed version ISSN 0001-3765 / Online version ISSN 1678-2690 www.scielo.br/aabc Titanosauriform teeth from the Cretaceous of Japan HARUO SAEGUSA1 and YUKIMITSU TOMIDA2 1Museum of Nature and Human Activities, Hyogo, Yayoigaoka 6, Sanda, 669-1546, Japan 2National Museum of Nature and Science, 3-23-1 Hyakunin-cho, Shinjuku-ku, Tokyo 169-0073, Japan Manuscript received on October 25, 2010; accepted for publication on January 7, 2011 ABSTRACT Sauropod teeth from six localities in Japan were reexamined. Basal titanosauriforms were present in Japan during the Early Cretaceous before Aptian, and there is the possibility that the Brachiosauridae may have been included. Basal titanosauriforms with peg-like teeth were present during the “mid” Cretaceous, while the Titanosauria with peg-like teeth was present during the middle of Late Cretaceous. Recent excavations of Cretaceous sauropods in Asia showed that multiple lineages of sauropods lived throughout the Cretaceous in Asia. Japanese fossil records of sauropods are conformable with this hypothesis. Key words: Sauropod, Titanosauriforms, tooth, Cretaceous, Japan. INTRODUCTION humerus from the Upper Cretaceous Miyako Group at Moshi, Iwaizumi Town, Iwate Pref. (Hasegawa et al. Although more than twenty four dinosaur fossil local- 1991), all other localities provided fossil teeth (Tomida ities have been known in Japan (Azuma and Tomida et al. 2001, Tomida and Tsumura 2006, Saegusa et al. 1998, Kobayashi et al. 2006, Saegusa et al. 2008, Ohara 2008, Azuma and Shibata 2010). -
Dinosaurs British Isles
DINOSAURS of the BRITISH ISLES Dean R. Lomax & Nobumichi Tamura Foreword by Dr Paul M. Barrett (Natural History Museum, London) Skeletal reconstructions by Scott Hartman, Jaime A. Headden & Gregory S. Paul Life and scene reconstructions by Nobumichi Tamura & James McKay CONTENTS Foreword by Dr Paul M. Barrett.............................................................................10 Foreword by the authors........................................................................................11 Acknowledgements................................................................................................12 Museum and institutional abbreviations...............................................................13 Introduction: An age-old interest..........................................................................16 What is a dinosaur?................................................................................................18 The question of birds and the ‘extinction’ of the dinosaurs..................................25 The age of dinosaurs..............................................................................................30 Taxonomy: The naming of species.......................................................................34 Dinosaur classification...........................................................................................37 Saurischian dinosaurs............................................................................................39 Theropoda............................................................................................................39