Deux nouvelles traces de pas de Dinosaures du Trias supérieur de la bordure cévenole (la Grand-Combe, Sud-Est de la France)

Gand, Georges; Vianey‐Liaud, Monique; Demathieu, Georges; Garric, Jacques

doi:10.1016/s0016-6995(00)80033-9

Cited by 19 publications

(13 citation statements)

References 9 publications

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“…However, it has not been found in Triassic strata: Otozoum from the Mercia Mudstone Group of Wales (Lockley et al 1996), and the`Gre Ás supe Ârieurs et Argiles bariole Âes' of Languedoc (Gand et al 2000) is referred here to Pseudotetrasauropus. Similarly, material from the Chinle Group (south-west USA) variously referred to Pseudotetrasauropus, Tetrasauropus (in part), Kalosauropus, and Otozoum (Lockley et al 1992(Lockley et al , 1993a(Lockley et al , b, 1996(Lockley et al , 2000(Lockley et al , 2001Lockley and Hunt 1995;Hunt et al 1998; Lockley and Meyer 1999;Lucas et al 2001) is all considered here to be Pseudotetrasauropus.…”

Section: R a I N F O R T H : D I N O S A U R I A N I C H N O G E N U mentioning

confidence: 98%

“…In mentioning this synonymy, it appears that the authors considered the grandcombensis material to belong to the Pseudotetrasauropus concept. The description of Gand et al (2000) states that the holotype trackway consists of seven pes and two manus impressions; they designated the ®rst pes and second manus prints the holotype. Whilst I have not examined the material in person, it appears from the ®gures provided (in particular, their ®gures 5 and 6) that the material under consideration represents two separate trackways: the two manus impressions, which are the same size and morphology as the pes impressions of the main trackway, are reinterpreted as belonging to a second, less well-preserved, trackway.…”

Section: Ichnospecies Removed From Otozoummentioning

confidence: 99%

“…1, ®g. 4) from the Upper Triassic Mercia Mudstone of Wales referred to Otozoum (Lockley et al 1996) to be Pseudotetrasauropus, and Otozoum grandcombensis (Gand et al 2000) from Norian strata in southern France to be Pseudotetrasauropus grandcombensis.…”

Section: Pseudotetrasauropus Ellenberger 1972mentioning

confidence: 99%

“…1) and attributed to a large bipedal batrachian. Five additional ichnospecies were assigned to the ichnogenus after Edward Hitchcock's death (C. H. Hitchcock 1871(C. H. Hitchcock , 1889 Lull 1915;Bock 1952;Gand et al 2000). Three (O. lineatus, O. parvum, O. grandcombensis) have been removed into different ichnogenera [Apatopus (Baird 1957), Brachychirotherium (Haubold 1971), and Pseudotetrasauropus (this paper) respectively], whilst the other two are here synonymised with O. moodii.…”

mentioning

confidence: 99%

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Revision and re‐evaluation of the Early Jurassic dinosaurian ichnogenus Otozoum

Rainforth¹

2003

Palaeontology

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ABSTRACT. Otozoum moodii Hitchcock, 1847 is one of the classic Connecticut Valley ichnotaxa established by Edward Hitchcock between 1836 and 1865. The taxon is redescribed, and AC 4/1a re-established as the holotype specimen. Otozoum minus and O. caudatum are synonymised with O. moodii. The syntypes of Kalosauropus pollex (nomen nudum) are described as O. pollex sp. nov. Cladistic, quantitative, and comparative methods of trackmaker identi®cation suggest that Otozoum was made by a prosauropod dinosaur. In quantitative analyses, only those phalanges likely to contribute to footprint morphology were considered; claws were also excluded due to their highly variable styles of impression. Several diagnostic characters distinguish Otozoum from Brachychirotherium, Chirotherium, Batrachopus, Tetrasauropus, and Pseudotetrasauropus; these ichnotaxa are probably attributable to crurotarsan archosaurs. Otozoum is found primarily in Hettangian strata of the Hartford, Deer®eld, and Fundy rift basins of eastern North America; it is also present in the Early Jurassic Navajo Sandstone (Colorado Plateau, USA) and Clarens Formation (Lesotho). The taxon is unknown in older strata; Triassic material previously referred to Otozoum (including O. grandcombensis) instead belongs in Pseudotetrasauropus. Correlation of sediments and comparison of faunal assemblages, particularly within the Newark Supergroup, suggest that the Otozoum trackmakers were restricted to arid environments.KEY WORDS: Otozoum, Pseudotetrasauropus, Early Jurassic, ichnotaxa, prosauropod.I N 1836, Edward Hitchcock, at that time Professor of Chemistry and Natural History at Amherst College, published the ®rst description of footprints from Early Jurassic strata of the Connecticut Valley. By the time of his death in 1864, he had described over 70 vertebrate and invertebrate ichnogenera and 140 ichnospecies (summarised in E. Hitchcock 1858, 1865). The catalogue of specimens in the Hitchcock Ichnological Cabinet of Amherst College (C. H. Hitchcock 1865) appears to have been used by later workers as the basis for identi®cation of type material, and the concepts of individual ichnotaxa. Unfortunately omissions, misidenti®cations, and imprecise wording con¯ict with the earlier works of E. Hitchcock, and have caused much confusion. The ichnotaxon lists (primarily E. Hitchcock 1858, 1865; C. H. Hitchcock 1865) were reviewed, revised, and expanded over the next 100 years (Hay 1902(Hay , 1930Lull 1904 Lull , 1915 Lull , 1953Abel 1935). Lull's (1953 treatise is commonly used as the basis for studies on Early Jurassic ichnites; Haubold's (1971Haubold's ( , 1984 monographs relied on Lull's (1953) publication in describing Early Jurassic footprints from North America. These three works are considered the standard references for palaeoichnological studies. Unfortunately, errors in Lull's (1904Lull's ( , 1915Lull's ( , 1953 works, largely due to reliance on C. H. Hitchcock's (1865) catalogue, have been perpetuated by subsequent ichnotaxonomists who have used Lull's works as a bas...

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Section: R a I N F O R T H : D I N O S A U R I A N I C H N O G E N U mentioning

confidence: 98%

Section: Ichnospecies Removed From Otozoummentioning

confidence: 99%

Section: Pseudotetrasauropus Ellenberger 1972mentioning

confidence: 99%

mentioning

confidence: 99%

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Revision and re‐evaluation of the Early Jurassic dinosaurian ichnogenus Otozoum

Rainforth¹

2003

Palaeontology

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“…Les séries triasiques étaient depuis longtemps l'objet de nombreuses études d'ordre stratigraphique (Cuif & Gautret, 1987;Gautret, 1991;Peybernes et al, 1993;Gand et al, 2000;Brayard et al, 2007;Pineiro, 2012), structural (Perthuisot, 1983, Lemaire et al, 1998Bobier et al, 1991;Chikhaoui et al, 2002;Khomsi,2004;Gharbi et al, 2005;Jallouli et al, 2005;Ben Chalbi et al, 2006;Roger et al, 2008), et minéralogique (Hartmann, 1963;Vila et al, 1998;Rossi, 2003;Hoa, 2008;Li, 2011;Oliver et al, 2014). Ce sont essentiellement les intérêts miniers et pétroliers (Mennig,1963;Espitalié et al, 1988;Alem et al 1998;Jamal et al, 2000;Acheche et al, 2001;Naouali Sarsar et al, 2013) qui ont été visés.…”

Section: Introductionunclassified

Etude hydrogéologique des séries triasiques dans la région de Jeffara-Dahar (Sud Tunisien): Apport des diagraphies et de la sismique réflexion

Lasmar¹,

Guellala

Zouhri

et al. 2016

Estud. geol.

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RÉSUMÉLa présente étude concerne l'interprétation des données de la sismique réflexion et celles des puits y compris les enregistrements diagraphiques en vue d'une meilleure caractérisation de l'aquifère triasique de la région de Jeffara-Dahar (Sud-Est de la Tunisie) qui constitue une cible potentielle pour l'alimentation en eau.Les logs lithologiques associés aux enregistrements diagraphiques correspondants montrent que les principaux réservoirs sont les grés de Sidi Stout, Kirchaou et Touareg ainsi que les dolomies de Mekraneb et Rehach. L'interprétation diagraphique met en évidence des niveaux de faible perméabilité et d'autres perméables et bien fracturées qui pourraient jouer un rôle dans l'acheminement des eaux souterraines.Les profils sismiques interprétés et la cartographie élaborée en conséquence mettent en évidence que l'aquifère triasique est compartimenté en blocs soulevés et affaissés. Cette structuration, contrôlée par la réactivation des accidents E-W et NW-SE en failles normales au cours du Trias, influence l'épaisseur des formations perméa-bles ainsi que le sens d'écoulement de la nappe d'eau.Les résultats obtenus seront utiles pour la rationalisation des futures recherches hydrogéologiques dans la région de Jeffara -Dahar.

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