1,720,958 research outputs found
Ornithischia Seeley 1887
No full textOrnithischia Seeley, 1887 Ornithopoda Marsh, 1881 Iguanodontia Baur, 1891 sensu Madzia et al., 2018 Ankylopollexia Sereno, 1986 sensu Sereno, 1998 Styracosterna Sereno, 1997 sensu Sereno 1998Published as part of Samathi, Adun & Suteethorn, Suravech, 2022, New materials of iguanodontians (Dinosauria: Ornithopoda) from the Lower Cretaceous Khok Kruat Formation, Ubon Ratchathani, Thailand, pp. 301-320 in Zootaxa 5094 (2) on page 303, DOI: 10.11646/zootaxa.5094.2.5, http://zenodo.org/record/596525
FIGURE 11 in New materials of iguanodontians (Dinosauria: Ornithopoda) from the Lower Cretaceous Khok Kruat Formation, Ubon Ratchathani, Thailand
No full textFIGURE 11. Majority rule consensus tree of the parsimony analysis showing the Khok Pha Suam iguanodontian UB1-A to nest within non-hadrosauriform styracosternan Iguanodontia.Published as part of Samathi, Adun & Suteethorn, Suravech, 2022, New materials of iguanodontians (Dinosauria: Ornithopoda) from the Lower Cretaceous Khok Kruat Formation, Ubon Ratchathani, Thailand, pp. 301-320 in Zootaxa 5094 (2) on page 313, DOI: 10.11646/zootaxa.5094.2.5, http://zenodo.org/record/596525
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 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
Theropod dinosaurs from Thailand and Southeast Asia : phylogeny, evolution, and paleobiogeography
Full text linkSoutheast Asia played an important role in dinosaur study during the Late Jurassic to mid-Cretaceous. Thailand is roughly in the third place in dinosaur discovery in Asia, after China and Mongolia. Nevertheless, there are few palaeontologists. Focussing on theropod dinosaurs in Southeast Asia, they mainly consist of non-maniraptoran tetanurans. They show similarity to Chinese plus Japanese theropods during the Early Cretaceous in broad systematic terms. During this time, some theropods such as spinosaurids and carcharodontosaurs were almost cosmopolitant. Whereas some theropods such as metriacanthosaurids were endemic to Europe and Asia including China and Thailand during the Middle to Late Jurassic. In this thesis, my team and I added knowledge and updated information on theropod diversity and taxonomy in Southeast Asia. The diversity of non-avian theropods from the Khorat Plateau in northeastern Thailand is high compared with previous works. In the Sao Khua Formation, which shows the highest theropod diversity, two new theropod taxa have been described and named. These include the basal coelurosaur Vayuraptor nongbualamphuensis gen. et sp. nov. and the basal megaraptoran Phuwiangvenator yaemniyomi gen. et sp. nov. This find suggests that the Megaraptora might originate in Southeast Asia. The problematic avetheropod Siamotyrannus has been revised and found here to be a basal coelurosaur, not an allosauroid as previous studies. This tells us that the basal coelurosaurs were probably evolved into large bodied at early stages. New phylogenetic analyses found Kinnareemimus is a basal ornithomimosaur, more basal than previously thought. Postcranial materials of a spinosaurid from the Phu Wiang Mountain, Khon KaenProvince, which might belong to Siamosaurus, have been described. A juvenile theropod from the Phu Wiang Mountain has been reported and described for the first time. Several theropod fragmentary materials from Thailand have been re-studied and discussed. In the Phu Kradung Formation, a new metriacanthosaurid (sinraptorid), which is being described by Chanthasit and team, was briefly mentioned here. In the Khok Kruat Formation, a yet unnamed and undescribed spinosaurid from Thailand has been preliminary studied here. We found that it differs from the spinosaurid from Laos, suggested that it could be a new taxon. A new carcharodontosaur, which is being described by Chokchaloemwong and team, was briefly mentioned here. Furthermore, theropod materials in Southeast Asia including Myanmar, Laos, and Malaysia, as well as southern China, have been here discussed. The supposed to be a ceratosaur Camarillasaurus from the Early Cretaceous of Spain was found here to be a spinosaurid, not a ceratosaur as in the original study, adding number of spinosaurid taxa into the Iberian Peninsula. Finally, a tibial fragment of a spinosaurid has been identified and studied. It was concluded to belong to the subclade Spinosaurinae and shows some level of aquatic adaptation
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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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