Short Communication Bizarre Notosuchian
Total Page:16
File Type:pdf, Size:1020Kb

Load more
Recommended publications
-
8. Archosaur Phylogeny and the Relationships of the Crocodylia
8. Archosaur phylogeny and the relationships of the Crocodylia MICHAEL J. BENTON Department of Geology, The Queen's University of Belfast, Belfast, UK JAMES M. CLARK* Department of Anatomy, University of Chicago, Chicago, Illinois, USA Abstract The Archosauria include the living crocodilians and birds, as well as the fossil dinosaurs, pterosaurs, and basal 'thecodontians'. Cladograms of the basal archosaurs and of the crocodylomorphs are given in this paper. There are three primitive archosaur groups, the Proterosuchidae, the Erythrosuchidae, and the Proterochampsidae, which fall outside the crown-group (crocodilian line plus bird line), and these have been defined as plesions to a restricted Archosauria by Gauthier. The Early Triassic Euparkeria may also fall outside this crown-group, or it may lie on the bird line. The crown-group of archosaurs divides into the Ornithosuchia (the 'bird line': Orn- ithosuchidae, Lagosuchidae, Pterosauria, Dinosauria) and the Croco- dylotarsi nov. (the 'crocodilian line': Phytosauridae, Crocodylo- morpha, Stagonolepididae, Rauisuchidae, and Poposauridae). The latter three families may form a clade (Pseudosuchia s.str.), or the Poposauridae may pair off with Crocodylomorpha. The Crocodylomorpha includes all crocodilians, as well as crocodi- lian-like Triassic and Jurassic terrestrial forms. The Crocodyliformes include the traditional 'Protosuchia', 'Mesosuchia', and Eusuchia, and they are defined by a large number of synapomorphies, particularly of the braincase and occipital regions. The 'protosuchians' (mainly Early *Present address: Department of Zoology, Storer Hall, University of California, Davis, Cali- fornia, USA. The Phylogeny and Classification of the Tetrapods, Volume 1: Amphibians, Reptiles, Birds (ed. M.J. Benton), Systematics Association Special Volume 35A . pp. 295-338. Clarendon Press, Oxford, 1988. -
Taxonomic Reappraisal of the Sphagesaurid Crocodyliform Sphagesaurus Montealtensis from the Late Cretaceous Adamantina Formation of São Paulo State, Brazil
TERMS OF USE This pdf is provided by Magnolia Press for private/research use. Commercial sale or deposition in a public library or website is prohibited. Zootaxa 3686 (2): 183–200 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2013 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3686.2.4 http://zoobank.org/urn:lsid:zoobank.org:pub:9F87DAC0-E2BE-4282-A4F7-86258B0C8668 Taxonomic reappraisal of the sphagesaurid crocodyliform Sphagesaurus montealtensis from the Late Cretaceous Adamantina Formation of São Paulo State, Brazil FABIANO VIDOI IORI¹,², THIAGO DA SILVA MARINHO3, ISMAR DE SOUZA CARVALHO¹ & ANTONIO CELSO DE ARRUDA CAMPOS² 1UFRJ, Departamento de Geologia, CCMN/IGEO, Cidade Universitária – Ilha do Fundão, 21949-900. Rio de Janeiro, Brazil. E-mail: [email protected]; [email protected] 2Museu de Paleontologia “Prof. Antonio Celso de Arruda Campos”, Praça do Centenário s/n, Centro, 15910-000 – Monte Alto, Brazil 3Instituto de Ciências Exatas, Naturais e Educação (ICENE), Universidade Federal do Triângulo Mineiro (UFTM), Av. Dr. Randolfo Borges Jr. 1700 , Univerdecidade, 38064-200, Uberaba, Minas Gerais, Brasil. [email protected] Abstract Sphagesaurus montealtensis is a sphagesaurid whose original description was based on a comparison with Sphagesaurus huenei, the only species of the clade described to that date. Better preparation of the holotype and the discovery of a new specimen have allowed the review of some characteristics and the identification -
Baixar Este Arquivo
DOI 10.5935/0100-929X.20120007 Revista do Instituto Geológico, São Paulo, 33 (2), 13-29, 2012 DESCRIÇÃO DE UM ESPÉCIME JUVENIL DE BAURUSUCHIDAE (CROCODYLIFORMES: MESOEUCROCODYLIA) DO GRUPO BAURU (NEOCRETÁCEO): CONSIDERAÇÕES PRELIMINARES SOBRE ONTOGENIA Caio Fabricio Cezar GEROTO Reinaldo José BERTINI RESUMO Entre os táxons de Crocodyliformes do Grupo Bauru (Neocretáceo), grande quan- tidade de morfótipos, incluindo materiais cranianos e pós-cranianos, vem sendo des- crita em associação a Baurusuchus pachecoi. Porém, a falta de estudos ontogenéticos, como os realizados para Mariliasuchus amarali, levou à atribuição de novos gêneros e espécies aos poucos crânios completos encontrados. A presente contribuição traz a descrição de um espécime juvenil de Baurusuchidae depositado no acervo do Museu de Ciências da Terra no Rio de Janeiro sob o número MCT 1724 - R. Trata-se de um rostro e mandíbula associados e em oclusão, com o lado esquerdo melhor preservado que o direito, e dentição zifodonte extremamente reduzida. O fóssil possui 125,3 mm de comprimento preservado da porção anterior do pré-maxilar até a extremidade pos- terior do dentário; 117,5 mm de comprimento preservado do pré-maxilar aos palatinos e altura lateral de 51,4 mm. Entre as informações de caráter ontogenético identificadas destacam-se: ornamentação suave composta de estrias vermiformes muito espaçadas e largas, linha ventral do maxilar mais reta, dentário levemente inclinado dorsalmente na porção mediana e sínfise mandibular menos vertical que em outros baurussúqui- dos de tamanho maior. A maioria das características rostrais e dentárias, diagnósticas para Baurusuchus pachecoi, foi identificada no exemplar MCT 1724 - R: rostro alto e comprimido lateralmente, além de dentição zifodonte com forte redução dentária, que culmina em quatro dentes pré-maxilares e cinco maxilares. -
Craniofacial Morphology of Simosuchus Clarki (Crocodyliformes: Notosuchia) from the Late Cretaceous of Madagascar
Society of Vertebrate Paleontology Memoir 10 Journal of Vertebrate Paleontology Volume 30, Supplement to Number 6: 13–98, November 2010 © 2010 by the Society of Vertebrate Paleontology CRANIOFACIAL MORPHOLOGY OF SIMOSUCHUS CLARKI (CROCODYLIFORMES: NOTOSUCHIA) FROM THE LATE CRETACEOUS OF MADAGASCAR NATHAN J. KLEY,*,1 JOSEPH J. W. SERTICH,1 ALAN H. TURNER,1 DAVID W. KRAUSE,1 PATRICK M. O’CONNOR,2 and JUSTIN A. GEORGI3 1Department of Anatomical Sciences, Stony Brook University, Stony Brook, New York, 11794-8081, U.S.A., [email protected]; [email protected]; [email protected]; [email protected]; 2Department of Biomedical Sciences, Ohio University College of Osteopathic Medicine, Athens, Ohio 45701, U.S.A., [email protected]; 3Department of Anatomy, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, Arizona 85308, U.S.A., [email protected] ABSTRACT—Simosuchus clarki is a small, pug-nosed notosuchian crocodyliform from the Late Cretaceous of Madagascar. Originally described on the basis of a single specimen including a remarkably complete and well-preserved skull and lower jaw, S. clarki is now known from five additional specimens that preserve portions of the craniofacial skeleton. Collectively, these six specimens represent all elements of the head skeleton except the stapedes, thus making the craniofacial skeleton of S. clarki one of the best and most completely preserved among all known basal mesoeucrocodylians. In this report, we provide a detailed description of the entire head skeleton of S. clarki, including a portion of the hyobranchial apparatus. The two most complete and well-preserved specimens differ substantially in several size and shape variables (e.g., projections, angulations, and areas of ornamentation), suggestive of sexual dimorphism. -
Postcranial Skeleton of Mariliasuchus Amarali Carvalho and Bertini, 1999 (Mesoeucrocodylia) from the Bauru Basin, Upper Cretaceous of Brazil
AMEGHINIANA - 2013 - Tomo 50 (1): 98 – 113 ISSN 0002-7014 POSTCRANIAL SKELETON OF MARILIASUCHUS AMARALI CARVALHO AND BERTINI, 1999 (MESOEUCROCODYLIA) FROM THE BAURU BASIN, UppER CRETACEOUS OF BRAZIL Pedro HenriQue NOBRE1 and Ismar de souZA carvaLho2 1Universidade Federal de Juiz de Fora, Departamento de Ciências Naturais - CA João XXIII, Rua Visconde de Mauá 300, Bairro Santa Helena, Juiz de Fora, 36015-260 MG, Brazil. [email protected] 2Universidade Federal do Rio de Janeiro. Departamento de Geologia, CCMN/IGEO, Cidade Universitária – Ilha do Fundão, Rio de Janeiro, 21.949-900 RJ, Brazil. [email protected] Abstract. Mariliasuchus amarali is a notosuchian crocodylomorph found in the Bauru Basin, São Paulo State, Brazil (Adamantina Forma- tion, Turonian–Santonian). The main trait of M. amarali is its robust construction, featuring short, laterally expanded bones. The centra of the vertebrae are amphicoelous. In the ilium, the postacetabular process is ventrally inclined and exceeds the limits of the roof of the acetabulum. M. amarali has postcranial morphological characteristics that are very similar to those of Notosuchus terrestris, though it also displays traits resembling those of eusuchian crocodyliforms (Crocodyliformes, Eusuchia). The similarity of the appendicular skeleton of M. amarali with the recent forms of Eusuchia, leads us to infer that M. amarali did not have an erect or semi-erect posture, as proposed for the notosuchian mesoeucrocodylians, but a sprawling type posture and, possibly, had amphibian habits (sharing this characteristic with the extant Eusuchia). Key words. Mariliasuchus amarali. Crocodyliformes. Notosuchia. Postcranial skeleton. Bauru Basin. Cretaceous. Resumen. ESQUELETO POSCRANEANO DE MARILIASUCHUS AMARALI CARVALHO Y BERTINI, 1999 (MESOEUCROCO- DYLIA), DE LA CUENCA DE BAURU, CRETÁCICO SUPERIOR DE BRASIL. -
Upper Cretaceous of Patagonia, Argentina
Cretaceous Research 32 (2011) 223e235 Contents lists available at ScienceDirect Cretaceous Research journal homepage: www.elsevier.com/locate/CretRes First record of a clupeomorph fish in the Neuquén Group (Portezuelo Formation), Upper Cretaceous of Patagonia, Argentina Valéria Gallo a,*, Jorge O. Calvo b, Alexander W.A. Kellner c a Laboratório de Sistemática e Biogeografia, Departamento de Zoologia, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, 20550-013, Rio de Janeiro, RJ, Brazil b Centro Paleontológico Lago Barreales, Universidad Nacional del Comahue, Proyecto Dino, Ruta Prov. 51, km 65, Neuquén 8300, Argentina c Setor de Paleovertebrados, Departamento de Geologia e Paleontologia, Museu Nacional/UFRJ, Quinta da Boa Vista, São Cristóvão, 20940-040, Rio de Janeiro, RJ, Brazil article info abstract Article history: A new genus and species of clupeomorph fish, Leufuichthys minimus, is described from the fluvial Received 8 March 2010 deposits of the Portezuelo Formation, Upper Cretaceous (TuronianeConiacian) of the Neuquén Group, Accepted in revised form 3 December 2010 Patagonia, Argentina. It is a small-sized fish with an estimated body length up to 46 mm. Among other Available online 13 December 2010 characters, the new species shows the following: abdominal scutes; abdomen moderately convex; anal fin elongate-based; three uroneurals; two epurals; caudal fin bearing very elongate rays; and cycloid Keywords: scales. Leufuichthys minimus gen. et sp. nov. shows a greater similarity with Kwangoclupea dartevellei, Clupeomorpha a clupeomorph described from a marine Cenomanian deposit of the Democratic Republic of Congo Systematics fi fi Upper Cretaceous (Africa), mainly due to the presence of an elongate-based anal n, bearing more than 20 n-rays, Patagonia differing from it by the presence of a not hypertrophied abdomen. -
Sedimentology and Stratigraphy of the Upper Cretaceous-Paleocene El
Louisiana State University LSU Digital Commons LSU Master's Theses Graduate School 2002 Sedimentology and stratigraphy of the Upper Cretaceous-Paleocene El Molino Formation, Eastern Cordillera and Altiplano, Central Andes, Bolivia: implications for the tectonic development of the Central Andes Richard John Fink Louisiana State University and Agricultural and Mechanical College Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_theses Part of the Earth Sciences Commons Recommended Citation Fink, Richard John, "Sedimentology and stratigraphy of the Upper Cretaceous-Paleocene El Molino Formation, Eastern Cordillera and Altiplano, Central Andes, Bolivia: implications for the tectonic development of the Central Andes" (2002). LSU Master's Theses. 3925. https://digitalcommons.lsu.edu/gradschool_theses/3925 This Thesis is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Master's Theses by an authorized graduate school editor of LSU Digital Commons. For more information, please contact [email protected]. SEDIMENTOLOGY AND STRATIGRAPHY OF THE UPPER CRETACEOUS- PALEOCENE EL MOLINO FORMATION, EASTERN CORDILLERA AND ALTIPLANO, CENTRAL ANDES, BOLIVIA: IMPLICATIONS FOR THE TECTONIC DEVELOPMENT OF THE CENTRAL ANDES A Thesis Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Master of Science in The Department of Geology and Geophysics by Richard John Fink B.S., Montana State University, 1999 August 2002 ACKNOWLEDGEMENTS I would like to thank Drs. Bouma, Ellwood and Byerly for allowing me to present and defend my M.S. thesis in the absence of my original advisor. -
Razanandrongobe Sakalavae, a Gigantic Mesoeucrocodylian from the Middle Jurassic of Madagascar, Is the Oldest Known Notosuchian
Razanandrongobe sakalavae, a gigantic mesoeucrocodylian from the Middle Jurassic of Madagascar, is the oldest known notosuchian peerj.com /articles/3481/ Introduction A decade ago, Maganuco, Dal Sasso & Pasini (2006) described the fragmentary remains of a very large predatory archosaur from the Middle Jurassic (Bathonian) of the Mahajanga Basin, Madagascar. The material included a fragmentary right maxilla bearing three teeth, and seven peculiar isolated teeth clearly belonging to the same taxon. In spite of the scanty remains, the presence of a unique combination of features, which included a well-developed bony palate on the maxilla, mesial and lateral teeth respectively U-shaped and sub-oval in cross-section, and very large tooth denticles (1 per mm) on the carinae, allowed the authors to erect the new taxon Razanandrongobe sakalavae Maganuco, Dal Sasso & Pasini, 2006. However, the systematic position of the new species remained uncertain: indeed, besides the autapomorphic denticle size, R. sakalavae shared a mix of potential autapomorphic, synapomorphic, and homoplasic features with crocodylomorphs and theropods. Therefore, the species was referred to Archosauria incertae sedis. Here we describe new cranial material referable to R. sakalavae and consisting of an almost complete right premaxilla, the rostral half of a left dentary, a maxillary fragment with diagnostic teeth, and a very large isolated tooth crown. In addition, we tentatively refer to the same taxon five cranial fragments that were likely collected at the same locality. -
[PDF] Sedimentology and Depositional Environments of the Red
This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier’s archiving and manuscript policies are encouraged to visit: http://www.elsevier.com/copyright Author's personal copy Journal of African Earth Sciences 57 (2010) 179–212 Contents lists available at ScienceDirect Journal of African Earth Sciences journal homepage: www.elsevier.com/locate/jafrearsci Geological Society of Africa Presidential Review No. 15 Sedimentology and depositional environments of the Red Sandstone Group, Rukwa Rift Basin, southwestern Tanzania: New insight into Cretaceous and Paleogene terrestrial ecosystems and tectonics in sub-equatorial Africa Eric M. Roberts a,*, Patrick M. O’Connor b, Nancy J. Stevens b, Michael D. Gottfried c, Zubair A. Jinnah d, Sifael Ngasala c, Adeline M. Choh d, Richard A. Armstrong e a Department of Physical Sciences, Southern Utah University, Cedar City, UT 84720, USA b Department of Biomedical Sciences, 228 Irvine Hall, College of Osteopathic Medicine, Ohio University, Athens, OH, 45701, -
Chubut Province, Argentina) and Its Phylogenetic Position Within Basal Mesoeucrocodylia
Cretaceous Research 30 (2009) 1376–1386 Contents lists available at ScienceDirect Cretaceous Research journal homepage: www.elsevier.com/locate/CretRes The first crocodyliform from the Chubut Group (Chubut Province, Argentina) and its phylogenetic position within basal Mesoeucrocodylia Juan Martı´n Leardi a,c,*, Diego Pol b,c a Laboratorio de Paleontologı´a de Vertebrados, Departamento de Ciencias Geolo´gicas, Facultad de Ciencias Exactas y Naturales, Pabello´n II, Universidad de Buenos Aires, Intendente Gu¨iraldes 2160, Ciudad Universitaria (C1428EGA), Buenos Aires, Argentina b Museo Paleontolo´gico Egidio Feruglio, Avenue Fontana 140 (9100), Trelew, Chubut, Argentina c CONICET- Consejo Nacional de Investigaciones Cientı´ficas y Te´cnicas, Avenue Rivadavia 1917, Buenos Aires, Argentina article info abstract Article history: A new crocodyliform specimen is presented here found in the Cerro Castan˜o Member of the Cerro Received 27 February 2009 Barcino Formation (Chubut Group). The material consists of cranial and postcranial remains that Accepted in revised form 4 August 2009 represent a new taxon that has strong affinities with Peirosauridae, but also shares derived features Available online 11 August 2009 present in Araripesuchus. The phylogenetic relationships of this new taxon were tested through a cladistic analysis depicting it as a member of the Peirosauridae. The inclusion of Barcinosuchus within this clade of Keywords: basal mesoeucrocodylians is supported by the presence of hypapophyses up to the third or fourth dorsal Crocodyliformes vertebrae, anterolateral facing edge on postorbital, quadrate dorsal surface divided in two planes by Peirosauridae Lower Cretaceous a ridge; mandibular symphysis tapering anterirorly in ventral view, lateral surface of dentary convex Central Patagonia anterior to mandibular fenestra, distal body of quadrate well developed, anteroposteriorly thin and Argentina lateromedially broad. -
From the Late Cretaceous of Minas Gerais, Brazil: New Insights on Sphagesaurid Anatomy and Taxonomy
The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy Agustín G. Martinelli1,2,3, Thiago S. Marinho2,4, Fabiano V. Iori5 and Luiz Carlos B. Ribeiro2 1 Instituto de Geociencias, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil 2 Centro de Pesquisas Paleontológicas L. I. Price, Complexo Cultural e Científico Peirópolis, Pró-Reitoria de Extensão Universitária, Universidade Federal do Triangulo Mineiro, Uberaba, Minas Gerais, Brazil 3 CONICET-Sección Paleontologia de Vertebrados, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Buenos Aires, Argentina 4 Departamento de Ciências Biológicas, Universidade Federal do Triângulo Mineiro, Instituto de Ciências Exatas, Naturais e Educação, Uberaba, Minas Gerais, Brazil 5 Museu de Paleontologia “Prof. Antonio Celso de Arruda Campos”, Monte Alto, Sao Paulo, Brazil ABSTRACT Field work conducted by the staff of the Centro de Pesquisas Paleontológicas Llewellyn Ivor Price of the Universidade Federal do Triângulo Mineiro since 2009 at Campina Verde municipality (MG) have resulted in the discovery of a diverse vertebrate fauna from the Adamantina Formation (Bauru Basin). The baurusuchid Campinasuchus dinizi was described in 2011 from Fazenda Três Antas site and after that, preliminary descriptions of a partial crocodyliform egg, abelisaurid teeth, and fish remains have been done. Recently, the fossil sample has been considerably increased including the discovery -
The Chaco Paraná Basin Rift Basin System. an Approach to the Tectonic-Stratigraphical Evolution from the Late Cretaceous to Quaternary
The Chaco Paraná Basin rift basin system. An approach to the tectonic-stratigraphical evolution from the Late Cretaceous to Quaternary. South America Roberto Torra Departamento de Geociencias. Fac. de Ingeniería. Universidad Nacional del Nordeste Avda. Las Heras 727, H3500COI. Resistencia. Chaco. Argentina. e-mail: [email protected] Resumo O presente trabalho trata de um estudo de geologia regional, sedimentologia e tectônica feito nas seqüências marinhas costeiras rasas de idade neocretàcica a miocênica. Estas seqüências estão coligadas num sistema do tipo “rift basin” que evoluiu desde o neocretácico. A bacia em estudo encontra-se localizada no América do Sul, bordejando ao oeste do Escudo Brasileiro. O sistema regional rift basin da Bacia Chaco Paraná formou-se como uma típica bacia extensional intracratónica, limitada no oeste pelo antepaís do orógeno andino, que ainda não tinha sofrido sua principal fase de orogênese e levantamento regional. As amplas áreas invadidas pelos mares e seus depósitos associados de seqüências costeiras superficiais cobriram uma ampla pediplanicie de relevo pouco pronunciado. A primeira etapa transgressiva começou ao final do Senoniano tardío ou Maestrichtiano prematuro. Logo aconteceram oi avanços maiores até o Neo- Mioceno, com retrocessos e avanços sucessivos de menor importancia. Podem registrar-se pelo menos três etapas de associações de clímax extensionais (crustal stretchs) e de mar alto associadas com variações eustáticas ocorridas durante o Senoniano-Maestrichtiano-Paleoceno, o Eoceno e o Mioceno. O primeiro aconte- cimento transgressivo aconteceu durante o Neo-Cretàcico, mas seu registro sedimentológico conhecido é escasso. Porem, seríam necessarias um maior núme- Ciência e Natura, UFSM, 27 (2): 25 - 64, 2005 25 ro de perfurações para um reconhecimento mais exato dos depósitos desta transgreção marinha, bem exposta na região sud-andina (Serras Subandinas) do noroeste da Argentina e Bolivia.