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Erratum A new species of basal rhynchosaur (Diapsida: Archosauromorpha) from the early Middle Triassic of South Africa, and the early evolution of Rhynchosauria
No full textButler, Richard J., Ezcurra, Martín D., Montefeltro, Felipe C., Samathi, Adun, Sobral, Gabriela (2016): Erratum A new species of basal rhynchosaur (Diapsida: Archosauromorpha) from the early Middle Triassic of South Africa, and the early evolution of Rhynchosauria. Zoological Journal of the Linnean Society 177 (4): 1030, DOI: 10.1111/zoj.12475, URL: http://doi.wiley.com/10.1111/zoj.1247
FIGURE 1 in The first Pan-Podocnemididae turtle egg from the Presidente Prudente Formation (Late Cretaceous, Bauru Group), Brazil
No full textFIGURE 1. Maps of Brazil (A), São Paulo State (B), and the distribution of Late Cretaceous rock exposures of the Caiuá and Bauru Groups (C). Black star indicates the site of LPRP-USP 0052 (edited from Marsola et al. 2014).Published as part of Marsola, Júlio C. De A., Grellet-Tinner, Gerald, Montefeltro, Felipe C. & Langer, Max C., 2014, The first Pan-Podocnemididae turtle egg from the Presidente Prudente Formation (Late Cretaceous, Bauru Group), Brazil, pp. 187-194 in Zootaxa 3872 (2) on page 188, DOI: 10.11646/zootaxa.3872.2.5, http://zenodo.org/record/494804
Finite elements analysis suggests a defensive role for osteoderms in titanosaur dinosaurs (Sauropoda)
No full textHere we present, for the first time, the use of finite element analysis to evaluate bites of two possible predators, a baurusuchid crocodyliform and an abelisaurid theropod into titanosaur osteoderms, in order to test if these structures could act as defensive tools. Our results showed that bites caused much less stress on osteoderms that did not went through internal resorption and were composed mainly by solid bone. Our data strengths the hypothesis that titanosaur osteoderms could have provided more functions than just mineral storage.Fil: Silva Junior, Julian C.G.. Universidade de Sao Paulo; BrasilFil: Montefeltro, Felipe C.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Marinho, Thiago S.. Universidade Federal Do Triangulo Mineiro; BrasilFil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Langer, Max C.. Universidade de Sao Paulo; Brasi
Figure 4 in A new species of basal rhynchosaur (Diapsida: Archosauromorpha) from the early Middle Triassic of South Africa, and the early evolution of Rhynchosauria
No full textFigure 4. Eohyosaurus wolvaardti gen. et sp. nov., SAM-PK-K10159, close-up photographs. Anterior end of the skull as preserved in left (A) and right (B) lateral views; temporal region of the skull in right lateral view (C); left squamosal, quadrate, and quadratojugal in lateral view (D); and parietals and posterior skull roof in dorsal view (E). Abbreviations: ao, anguli oris crest; ap.qj, anterior process of the quadratojugal; d, dentary; dp.j, dorsal process of the jugal; j, jugal; lf.q, lateral flange of the quadrate; m, maxilla; p, parietal; pf, postfrontal; po, postorbital; pp.j, posterior process of the jugal; pp.po, posterior process of the postorbital; qf, quadrate foramen; qj, quadratojugal; sc, sagittal crest; scl, sclerotic ring; shm, impression of the horizontal occlusal shelf of the maxilla; t.po, thickened orbital margin of the postorbital; vp.sq, ventral process of the squamosal.Published as part of Butler, Richard J., Ezcurra, Martín D., Montefeltro, Felipe C., Samathi, Adun & Sobral, Gabriela, 2015, A new species of basal rhynchosaur (Diapsida: Archosauromorpha) from the early Middle Triassic of South Africa, and the early evolution of Rhynchosauria, pp. 571-588 in Zoological Journal of the Linnean Society 174 (3) on page 576, DOI: 10.1111/zoj.12246, http://zenodo.org/record/472055
The osteoderms of baurusuchid crocodyliforms (Mesoeucrocodylia, Notosuchia)
No full textBaurusuchidae is a clade of terrestrial crocodyliforms that thrived during the Late Cretaceous in South America. The members of this clade occupied top-predator roles in their habitats. Knowledge about the anatomy, the systematics, and the evolution of baurusuchids has increased profoundly in the past decade. Although aspects of their cranial and postcranial anatomy are becoming clearer, the configuration of the dermal armor remains neglected and little is known about the anatomy of these elements in the clade. The dermal skeleton of baurusuchids is described here in detail in terms of arrangement and morphology, the supposed absence of osteoderms in Pissarrachampsa sera is reevaluated, and a detailed comparison across Crocodyliformes is attempted. The description of the dermal armor, in particular that of the dorsum, revealed an unforeseen variation among baurusuchid taxa, including autapomorphic traits that were added to the diagnosis of taxa. The absence of osteoderms is confirmed for Pissarrachampsa sera based on new specimens, revealing this taxon as the only terrestrial crocodyliform known to lack dermal armor altogether. Comparisons with a diverse range of crocodyliforms revealed that the dorsal shield of baurusuchids is unique among crocodyliforms in terms of arrangement and morphology, and only a few notosuchians approach the condition seen in the clade. This study explores possible biomechanical implications of the unique dorsal shield of baurusuchids and provides information about possible phylogenetic signals, to be tested in future analyses of notosuchian systematics
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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