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Figure 8 in A new specimen of Uruguaysuchus aznarezi (Crocodyliformes: Notosuchia) from the middle Cretaceous of Uruguay and its phylogenetic relationships
No full textFigure 8. FC-DPV 2320, right anterior palpebral in dorsal view. Scale bar = 2 cm.Published as part of Soto, Matías, Pol, Diego & Perea, Daniel, 2011, Zoological Journal of the Linnean Society 163 (5) on pages 644-645, DOI: 10.1111/j.1096-3642.2011.00717.x, http://zenodo.org/record/544168
Figure 1. A in A new specimen of Uruguaysuchus aznarezi (Crocodyliformes: Notosuchia) from the middle Cretaceous of Uruguay and its phylogenetic relationships
No full textFigure 1. A, map of Uruguay illustrating exposed sequences of the Guichón Formation (black arrow = town of Guichón). B, location of Guichón, from where FC-DPV 2320 comes (it is also the type locality of Uruguaysuchus), about 90 km east of Paysandú (Paysandú province, north-west Uruguay).Published as part of Soto, Matías, Pol, Diego & Perea, Daniel, 2011, Zoological Journal of the Linnean Society 163 (5) on pages 644-645, DOI: 10.1111/j.1096-3642.2011.00717.x, http://zenodo.org/record/544168
El Uruguay de los dinosaurios
No full textHace 300 millones de años (Ma), durante el período Carbonífero, los países que hoy están más al norte, en especial norteamericanos y europeos, pasaban unos agradables años cálidos atravesados por la franja ecuatorial del planeta. Sus territorios estaban cubiertos de bosques frondosos y pantanos donde prosperaban grandes insectos y arácnidos, y numerosos anfibios, cuyos magníficos fósiles hoy adornan las vitrinas de numerosos museos. A la vez sus bosques, convertidos en carbón(de ahí el nombre del período),sustentaron sus máquinas durante la Revolución Industrial y la Primera Guerra Mundial. Pero...¿qué pasaba aquí en el sur?Fil: Apesteguía, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación de Historia Natural Félix de Azara; ArgentinaFil: Soto, Matías. Universidad de la República. Instituto de Ciencias Geológicas; Urugua
A new specimen of Uruguaysuchus aznarezi (Crocodyliformes: Notosuchia) from the middle Cretaceous of Uruguay and its phylogenetic relationships
Full text linkUruguaysuchus is a small mesoeucrocodylian known from several partial skeletons and skulls from the Guichón Formation (middle Cretaceous, Uruguay). Several authors have pointed out derived similarities of this taxon with different basal notosuchian genera, highlighting its importance for mesoeucrocodylian phylogeny and biogeography. However, the holotype is only partially prepared and has not been available for study for many years. Thus, phylogenetic studies have included this form based on the original description, thereby resulting in a large amount of missing data in the character scorings of this taxon. Here, we describe a new specimen from the type locality consisting of a partial skull, lower jaw and cervical vertebrae which can be referred to U. aznarezi. The new specimen allows for the recognition and scoring of several characters previously unknown for this taxon, thus providing a more extensive diagnosis, as well as new information for understanding its phylogenetic relationships. These characters are congruent with the morphology present in basal notosuchians. The relationships of Uruguaysuchus are tested through a cladistic analysis using a recently published data set including the new information. The phylogenetic results differ from previous analyses, recovering this taxon as the sister group of the Araripesuchus clade. U. terrai is considered a juvenile individual of U. aznarezi.Fil: Soto, Matías. Administración Nacional de Combustibles, Alcohol y Portland; UruguayFil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Perea, Daniel. Universidad de la República. Facultad de Ciencias; Urugua
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
Uruguaysuchidae GASPARINI 1971
No full textURUGUAYSUCHIDAE GASPARINI, 1971 <p> <i>Type genus:</i> <i>Uruguaysuchus</i> Rusconi, 1933.</p> <p> <i>Diagnosis:</i> The family Uruguaysuchidae is supported by two unambiguous synapomorphies: surangular forming approximately one-third of the glenoid fossa and dorsal surface of mandibular symphysis strongly concave and narrow, trough shaped. See discussion in the section on ‘Phylogenetic relationships’ below.</p> <p> <i>Comments:</i> Although it is still premature to give a phylogenetic definition of the family Uruguaysuchidae (as the clade is only weakly supported), it should be noted that the only existing phylogenetic definition (that of Carvalho, Ribeiro & Avilla, 2004) is incomplete. A node-based (employing both <i>Uruguaysuchus aznarezi</i> and <i>Araripesuchus gomesii</i> as internal specifiers) or stem-based (using also <i>Notosuchus terrestris</i> as the external specifier) phylogenetic definition is equally possible. However, it should also be noted that if eventually <i>Uruguaysuchus</i> turns out to be closer to Ziphosuchia (instead of being the sister taxon of <i>Araripesuchus</i>), a node-based Uruguaysuchidae would be redundant with Notosuchia, and a stem-based Uruguaysuchidae would include a paraphyletic array of basal notosuchians.</p>Published as part of <i>Soto, Matías, Pol, Diego & Perea, Daniel, 2011, A new specimen of Uruguaysuchus aznarezi (Crocodyliformes: Notosuchia) from the middle Cretaceous of Uruguay and its phylogenetic relationships, pp. 644-645 in Zoological Journal of the Linnean Society 163 (5)</i> on pages 644-645, DOI: 10.1111/j.1096-3642.2011.00717.x, <a href="http://zenodo.org/record/5441686">http://zenodo.org/record/5441686</a>
Uruguaysuchus Rusconi 1933
No full textURUGUAYSUCHUS RUSCONI, 1933 Type species: Uruguaysuchus aznarezi Rusconi, 1933. Revised diagnosis: Uruguaysuchus can be diagnosed by the presence of the following unique combination of characters (autapomorphies marked with an asterisk): heterodont dentition (maxilla: 1–2 incisiviform teeth, 1 caniniform tooth and 9–10 post-caniniform teeth; dentary: 6–7 incisiviform teeth, 10–11 ‘postcaniniform’ teeth); hypertrophied 2nd or (in juveniles) 3rd maxillary tooth; post-caniniform spatulated teeth showing strong buccolingual compression, subcircular in shape (in buccal or lingual view), with a pointed central cusp and minute denticles in a single row along the mesial and distal margins*; strong constriction at the base of the crown and marked apicobasal groove along the lingual surface of the root; choanal septum completely divides the opening; posterior region of septum with subcircular cross-section and anterior region T-shaped in cross-section* (broad expansion at the ventral surface of the choana); ventral surface of choanal septum bearing a longitudinal groove; acute anterior tip of the choanal septum that wedges between the palatines; basisphenoid and basioccipital not exposed in ventral view of the skull (given that the extensive posterior region of the pterygoid flanges projects caudally)*; pterygoids fused posterior to the choanal opening, but towards the posterior ends the two flanges meet, forming a narrow sulcus*; posterior border of the choanal opening formed by an elevated rim that projects more ventrally than the palatal surface of the pterygoid flanges*; lateral surface of the quadrate pierced by a dorsally located preotic siphoneal opening, partially exceeding the dorsal margin of the otic aperture*.Published as part of Soto, Matías, Pol, Diego & Perea, Daniel, 2011, A new specimen of Uruguaysuchus aznarezi (Crocodyliformes: Notosuchia) from the middle Cretaceous of Uruguay and its phylogenetic relationships, pp. 644-645 in Zoological Journal of the Linnean Society 163 (5) on pages 644-645, DOI: 10.1111/j.1096-3642.2011.00717.x, http://zenodo.org/record/544168
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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