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2,315 results for “dinosaur”
Fig. 6 in An Early Ostrich Dinosaur and Implications for Ornithomimosaur Phylogeny
Fig. 6. The dentition of Shenzhousaurus orientalis as preserved in the left dentary.
Figure 7 in Cranial anatomy of Shunosaurus, a basal sauropod dinosaur from the Middle Jurassic of China
Figure 7. Braincase of of Shunosaurus lii (ZG65430). A, left lateral view. B, rostroventral view.
Figure 6 in Cranial anatomy of Shunosaurus, a basal sauropod dinosaur from the Middle Jurassic of China
Figure 6. Restoration of the skull of Shunosaurus lii (ZG65430). A, dorsal view. B, ventral view.
Figure 9 in Sauropod dinosaur phylogeny: critique and cladistic analysis
Figure 9. Higher-level relationships of sauropods based on Wilson & Sereno (1998).
Tyrannosaurus (Daspletosaurus) torosus type NMC 8506 and AMNH 5438 in Predatory Dinosaurs of the World
Tyrannosaurus (Daspletosaurus) torosus type NMC 8506 and AMNH 5438
Estimating the distribution of carotenoid coloration in skin and integumentary structures of birds and extinct dinosaurs
<p>Carotenoids are pigments responsible for most bright yellow, red, and orange hues in birds. Their distribution has been investigated in avian plumage, but the evolution of their expression in skin and other integumentary structures has not been approached in detail. Here, we investigate the expression of carotenoid-consistent coloration across tissue types in all extant, non-passerine species (n= 4,022) and archelosaur outgroups in a phylogenetic framework. We collect dietary data for a subset of birds and investigate how dietary carotenoid intake may relate to carotenoid expression in various tissues. We find that carotenoid-consistent expression in skin or non-plumage keratin has a 50 percent probability of being present in the most recent common ancestor of Archosauria. Skin expression has a similar probability at the base of the avian crown clade, but plumage expression is unambiguously absent in that ancestor and shows hundreds of independent gains within non-passerine neognaths, consistent with previous studies. Although our data do not support a strict sequence of tissue expression in non-passerine birds, we find support that expression of carotenoid-consistent color in non-plumage integument structures might evolve in a correlated manner and feathers are rarely the only region of expression. Taxa with diets high in carotenoid content also show expression in more body regions and tissue types. Our results may inform targeted assays for carotenoids in tissues other than feathers, and expectations of these pigments in non-avian dinosaurs. In extinct groups, bare-skin regions and the rhamphotheca, especially in species with diets rich in plants, may express these pigments, which are not expected in feathers or feather homologues.</p>
Electronic supplement for Flannery Sutherland et al. (2023). Dinosaur Trackways from the Upper Cretaceous Technikum Formation near Mayluu Suu City, Southern Tien Shan Mountains, Southwestern Kyrgyzstan
<p>Electronic supplement for Flannery Sutherland et al. (2023). <br> Dinosaur Trackways from the Upper Cretaceous Technikum Formation near<br> Mayluu Suu City, Southern Tien Shan Mountains, Southwestern Kyrgyzstan</p> <p>Folders R1 and R2 respectively contain the raw photo data, processed photogrammetry<br> models, and topographic false-colour and photo-textured renders of each<br> model<br> </p>
Statistical evaluation of character support reveals the instability of higher-level dinosaur phylogeny
<p>The interrelationships of the three major dinosaur clades (Theropoda, Sauropodomorpha, and Ornithischia) have come under increased scrutiny following the recovery of conflicting phylogenies by a large new character matrix and its extensively modified revision. Here, we use tools derived from recent phylogenomic studies to investigate the strength and causes of this conflict. Using maximum likelihood as an overarching framework, we examine the global support for alternative hypotheses as well as the distribution of phylogenetic signal among individual characters in both the original and rescored dataset. We find the three possible ways of resolving the relationships among the main dinosaur lineages (Saurischia, Ornithischiformes, and Ornithoscelida) to be statistically indistinguishable and supported by nearly equal numbers of characters in both matrices. While the changes made to the revised matrix increased the mean phylogenetic signal of individual characters, this amplified rather than reduced their conflict, resulting in greater sensitivity to character removal or coding changes and little overall improvement in the ability to discriminate between alternative topologies. We conclude that early dinosaur relationships are unlikely to be resolved without fundamental changes to both the quality of available datasets and the techniques used to analyze them.</p>
Emergence age and ecological characteristics of gregarious dinosaurs
<p>All raw data of "Emergence age and ecological characteristics of gregarious dinosaurs". The species name (identified name) was obtained from a meta-analysis performed in this study. The database used for data collection is "The Paleobiology Database" (https://paleobiodb.org/).</p> <p> </p>
Supplementary information for: Dental microwear texture analysis reveals a likely dietary shift within Late Cretaceous ornithopod dinosaurs.
<p>This supplementary information includes 19 datasets and 95 sur files. Dataset 1 to 11 and 13 to 19 are in one excel file (“1. Supplementary Dataset 1-11 13-17_MS.xlsx “) and each dataset is in a separate excel sheet. Dataset 12 is a nexus file that contains a phylogenetic tree of ornithischian dinosaurs used in the analysis of this study (“2. DatasetS12 tree.nex”). Other 95 sur format files are original 3D surface files that are obtained by scanning tooth surface of ornithischian tooth fossils using a laser microscope VK-9700. Sur file can be opened by a surface roughness software MountainsMap. Surface roughness parameters obtained from these Sur files are in Supplementary dataset 1.</p> <p>Datasets 13 to 19 are results of statistical analyses that excluded data from <em>Thescelosaurs</em>.</p> <p> </p> <p>Below is an explanation for each dataset.</p> <p>Supplementary Dataset 1. Normalized dental microwear texture parameters.</p> <p>Supplementary Dataset 2. Results of the statistical analysis that examined effect of geological ages and enamel locations on each dental microwear texture parameter.</p> <p>Supplementary Dataset 3. Results of the statistical analysis that include body size as an explanatory variable.</p> <p>Supplementary Dataset 4. Eigen values of principal components obtained by the PCA of dental microwear texture parameters.</p> <p>Supplementary Dataset 5. Loading matrix of the PCA.</p> <p>Supplementary Dataset 6. Results of statistical analyses that examined effect of geological ages and enamel locations on PC1 and PC2.</p> <p>Supplementary Dataset 7. Bayes factors for the evolutionary model fitting of PC1.</p> <p>Supplementary Dataset 8. Bayes factors for the evolutionary model fitting of Sdr.</p> <p>Supplementary Dataset 9. Bayes factors for the evolutionary model fitting of Sha.</p> <p>Supplementary Dataset 10. Bayes factors for the evolutionary model fitting of Sq.</p> <p>Supplementary Dataset 11. Bayes factors for the evolutionary model fitting of Vvv.</p> <p>Supplementary Dataset 12. Phylogenetic trees used for the model fitting.</p> <p>Supplementary Dataset 13. Without <em>Thescelosaurus</em>: Results of the statistical analysis that examined effect of geological ages and enamel locations on each dental microwear texture parameter.</p> <p>Supplementary Dataset 14. Without <em>Thescelosaurus</em>: Results of statistical analyses that examined effect of geological ages and enamel locations on PC1 and PC2.</p> <p>Supplementary Dataset 15. Without Thescelosaurus: Bayes factors for the evolutionary model fitting of PC1.</p> <p>Supplementary Dataset 16. Without <em>Thescelosaurus</em>: Bayes factors for the evolutionary model fitting of Sdr.</p> <p>Supplementary Dataset 17. Without <em>Thescelosaurus</em>: Bayes factors for the evolutionary model fitting of Sha.</p> <p>Supplementary Dataset 18. Without <em>Thescelosaurus</em>: Bayes factors for the evolutionary model fitting of Sq.</p> <p>Supplementary Dataset 19. Without <em>Thescelosaurus</em>: Bayes factors for the evolutionary model fitting of Vvv.</p>
Dinosaur hemimandible (Hadrosauridae)
**Ejemplar: ** Hadrosauridae indet. **Edad:** Campaniense-Maastrichtiense 80-70 Ma. (Cretácico Superior) **Localidad:** La Solana,Tous (Valencia, España) **Descripción:** hemimandíbula izquierda de hadrosaurido que conserva parte de la bateria dentaria con 18 dientes entre completos y fragmentados. Presencia de 17 alvéolos dentales, proceso coronoide y forámenes mentonianos. **Dimensión ejemplar:** 180 mm. longitud máxima **Sigla museo, colección y entidad: **MGUV 2200, colección yacimiento de La Solana, depósito MUVHN **Técnica digitalización:** fotogrametría con cámara Sony DSC HV60, 278 fotos con plataforma **Software y parámetros: ** Metashape, nubes de puntos y malla calidad alta **Autor digitalización: **José A. Villena. **Cita ejemplar: **colección dinosaurios MUVHN **Referencia:**Lorente, A.G., & Gaete, R. (1998). First Data on the Hadrosaurian Dinosaurs (Ornitischia, Dinosauria) from the Upper Cretaceous of Valencia, Spain.  Source: Objaverse 1.0 / Sketchfab
Fig. 7 in The lambeosaurine dinosaur Amurosaurus riabinini, from the Maastrichtian of Far Eastern Russia
Fig. 7. Braincase of Amurosaurus riabinini (AEHM 1/232) in ventral (A, B) and caudal (C, D) views.
Fig. 4 in The lambeosaurine dinosaur Amurosaurus riabinini, from the Maastrichtian of Far Eastern Russia
Fig. 4. Reconstruction of the skull of Amurosaurus riabinini in left lateral view.
Fig. 6 in The lambeosaurine dinosaur Amurosaurus riabinini, from the Maastrichtian of Far Eastern Russia
Fig. 6. Braincase of Amurosaurus riabinini (AEHM 1/232) in rostral (A, B) and dorsal (C, D) views.
New frontiers in dinosaur exploration
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Data from: New evidence for the earliest ornithischian dinosaurs from Asia
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Taxonomic utility of isolated ankylosaurian dinosaur teeth using traditional and geometric morphometrics with implications for ankylosaur palaeoecology
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Data from: Standing giants: A digital biomechanical model for bipedal postures in sauropod dinosaurs
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A new two-fingered dinosaur sheds light on the radiation of Oviraptorosauria
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Estimating the distribution of carotenoid coloration in skin and integumentary structures of birds and extinct dinosaurs
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.