1,721,034 research outputs found
Les ammonites du Toarcien de Chantonnay (Vendée, France): analyse paléontologique, biostratigraphie et réflexion sur les Hildoceratinae
No full textNeige, Pascal, Rouget, Isabelle (2002): Les ammonites du Toarcien de Chantonnay (Vendée, France): analyse paléontologique, biostratigraphie et réflexion sur les Hildoceratinae. Geodiversitas 24 (4): 765-784, DOI: 10.5281/zenodo.537208
FIG. 4 in Les ammonites du Toarcien de Chantonnay (Vendée, France): analyse paléontologique, biostratigraphie et réflexion sur les Hildoceratinae
No full textFIG. 4. — Ammonites de la coupe de Chantonnay (Vendée, France); A, B, Orthildaites douvillei (Haug, 1884); A, ex situ, GD13205; B, ex situ, GD13206; C-E, Hildoceras sublevisoni Fucini, 1919; C, niveau 10, GD13207; D, niveau 10, GD13208; E, niveau 10, GD13209. Échelle: 1 cm.Published as part of Neige, Pascal & Rouget, Isabelle, 2002, Les ammonites du Toarcien de Chantonnay (Vendée, France): analyse paléontologique, biostratigraphie et réflexion sur les Hildoceratinae, pp. 765-784 in Geodiversitas 24 (4) on page 771, DOI: 10.5281/zenodo.537208
Harpoceras pseudoserpentinum Gabilly 1976
No full textHarpoceras pseudoserpentinum Gabilly, 1976 Harpoceras (Harpoceras) pseudoserpentinum Gabilly, 1976a: 90, pl. 6, figs 1, 2, pl. 7, figs 1-5, pl. 8, fig. 1, pl. 9, figs 1, 2. MATÉRIEL EXAMINÉ.— Ex situ, 1 exemplaire. DESCRIPTION Forme à flancs plats, parallèles. Aire ventrale tabulée, monocarénée. Rebord latéro-ventral différencié, arrondi. Rebord ombilical bien différencié suivi d’un mur ombilical vertical relativement haut. Côtes falciformes, se présentant comme des « renflements » larges et peu élevés sur la partie latéro-ombilicale, avec une tendance nette au resserrement. Entre ces renflements se dessinent des « cuvettes » situées juste sous la moitié des flancs. Les côtes sont ensuite bien individualisées sur la partie latéro-ventrale qui est arquée.Published as part of Neige, Pascal & Rouget, Isabelle, 2002, Les ammonites du Toarcien de Chantonnay (Vendée, France): analyse paléontologique, biostratigraphie et réflexion sur les Hildoceratinae, pp. 765-784 in Geodiversitas 24 (4) on page 770, DOI: 10.5281/zenodo.537208
Pleydellia celtica ? Faure & Cubaynes 1983
No full textPleydellia celtica ? Fauré & Cubaynes, 1983 (Fig. 7I, J) Pleydellia celtica Fauré & Cubaynes, 1983: 681, pl. 2, figs 8-29. MATÉRIEL EXAMINÉ.— Ex situ, GD13230, ex situ, GD13231. DESCRIPTION Trois loges d’habitation incomplètes de petite taille (diamètre maximum estimé: 40 mm) présentent une section du tour fortement comprimée, subelliptique. L’enroulement est relativement évolute. Les flancs convergent doucement vers le rebord latéro-ventral avec une épaisseur maximale proche du rebord ombilical. Le rebord ombilical est indifférencié et le mur ombilical convexe. Le ventre est pincé, arrondi et porte une fine carène relativement tranchante. Les côtes sont fines, flexueuses, regroupées en faisceaux étroits et tranchants vers l’ombilic puis se prolongent en éventail du côté ventral dans la moitié supérieure des flancs. Nous conservons une incertitude dans la détermination spécifique du fait de l’absence de spécimens complets récoltés, et du fait de la forte ressemblance de nos spécimens avec P. fluens Buckman, 1904 et P. subcompta (Branco, 1879).Published as part of Neige, Pascal & Rouget, Isabelle, 2002, Les ammonites du Toarcien de Chantonnay (Vendée, France): analyse paléontologique, biostratigraphie et réflexion sur les Hildoceratinae, pp. 765-784 in Geodiversitas 24 (4) on page 778, DOI: 10.5281/zenodo.537208
Anatomy of a Jurassic carbonate ramp : a continuous outcrop transect across the southern margin of the High Atlas (Morocco)
No full textDurlet Christophe, Alméras Yves, Chellaï El Hassane, Elmi Serge, Le Callonnec Laurence, Lézin Carine, Neige Pascal. Anatomy of a Jurassic carbonate ramp : a continuous outcrop transect across the southern margin of the High Atlas (Morocco). In: Géologie Méditerranéenne. Tome 28, numéro 1-2, 2001. Anatomy of Carbonate Bodies / Anatomie des corps carbonates. International Meeting / Colloque international. Marseille, 9-12 mai 2001, France, sous la direction de Marc Floquet, Jérôme Hennuy et Jean-Pierre Masse. pp. 57-61
Events of Increased Biodiversity - Evolutionary Radiations in the Fossil Record.
No full text146 pagesInternational audienceThis book presents the phenomenon of evolutionary radiation, as seen in the fossil record, by exploring its causes through the analysis of concrete examples using current and past paleontological data, which have contributed to the recognition and later analysis of these phenomena of diversification.Biodiversity arises from a long series of sometimes-sudden events, where evolutionary radiations form part of the story, as do extinctions.Throughout the book the use of illustrative examples represents well-known cases of evolutionary radiations in the fossil record. The author give a general introduction to biodiversity as we know it today, then analyze the fossil record in greater detail through concrete examples.This title serves as an effective introduction to the phenomena of diversification of life, for a broader audience interested in science in general and paleontology in particular, but also for university students who can benefit from the explanations and ruminations about these issues of diversification in the biological world, and of how that issue is approached in paleontology
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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