Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
1,817
datasets available to search
ShareScore release 0.7.1
Dataset results
1,817 results for “Late Cretaceous”
FIGURE 15 in Osteology and systematics of Uberabatitan ribeiroi (Dinosauria; Sauropoda): a Late Cretaceous titanosaur from Minas Gerais, Brazil
FIGURE 15. Coracoids of Uberabatitan ribeiroi. A, CPPLIP-1109 in 1, ventral and 2, dorsal views, 3, interpretative draw in ventral view; B, CPPLIP-1120 in 1, ventral, and 2, dorsal views; 3, interpretative draw in ventral view. Abbreviations: gl: glenoid fossa; f: coracoid foramen; ifg: infraglenoid lip; M. cc: M. costocoracoideus.
FIGURE 17 in Osteology and systematics of Uberabatitan ribeiroi (Dinosauria; Sauropoda): a Late Cretaceous titanosaur from Minas Gerais, Brazil
FIGURE 17. Humerus of Uberabatitan ribeiroi. CPPLIP-1030 left humerus in A, anterior, B, medial, C, proximal, D, posterior and E, lateral views. Abbreviations: dc: deltopectoral crest, M. cb: insertion for the M. coracobrachialis brevis; M. pc: insertion for the M. pectoralis.
FIGURE 28 in Osteology and systematics of Uberabatitan ribeiroi (Dinosauria; Sauropoda): a Late Cretaceous titanosaur from Minas Gerais, Brazil
FIGURE 28. Interpretative drawn of anterior cervical vertebrae of A CPPLIP-1057 and B Serra do Veadinho "DGM Series A" (MCT 1487-R, 5th cervical), showing homologous structure between them.
text-fig. 6. Skull reconstructions of representatives of Cretaceous OTUs in left lateral view, a, abelisaurid Camotaurus sastrei, Late Cretaceous (Campanian), Gorro Frigio Formation, Argentina; based on Bonaparte et al. (1990) and MACN CH 894. b, composite skull of a generalized baryonychid; mainly based on Suchomimus tenerensis (MNN GDF 501, 503-506) and Irritator challenged (SMNS 58022), with some elements reconstructed after Baryonyx walkeri (BMNH R 9951). c, carcharodontosaurid Carcharodontosaurus sahariens, Late Cretaceous (Cenomanian), Kem Kem beds, Morocco; based on Sereno et al. (1996) and SGM-Din 1, unpreserved elements shaded. D, dromaeosaurid Velociraptor mongoliensis, Late Cretaceous (Campanian), Djadokhta Formation, Mongolia; based on Barsbold (1983), Barsbold and Osmólska (1999), and AMNH 6515. e, ornithomimosaur Dromiceiomimus brevitertius, Late Cretaceous (Maastrichtian), Horseshoe Canyon Formation, Alberta, Canada; redrawn from Russell (1972). F, oviraptorosaur Oviraptor philoceratops, Late Cretaceous (Campanian), Djadokhta Formation, Mongolia; redrawn from Barsbold et al. (1990). G, therizinosauroid Erlikosaurus andrewsi, Late Cretaceous (Cenomanian- Turonian), Baynshiren Svita, Mongolia; based on Clark et al. (1994). H, tyrannosaurid Gorgosaurus libratus, Late Cretaceous (Campanian), Judith River Formation, Alberta, Canada, redrawn from Molnar et al. (1990). Abbreviations as in Text-figures 4 and 5, and: acc. op., accessory opening of unknown function in the premaxilla of Oviraptor (Barsbold et al. 1990); amf, anterior maxillary foramen; pn, pneumatic openings. Scale bars represent 50 mm (d-g) and 100 mm (a-c, h). in The interrelationships and evolution of basal theropod dinosaurs
text-fig. 6. Skull reconstructions of representatives of Cretaceous OTUs in left lateral view, a, abelisaurid Camotaurus sastrei, Late Cretaceous (Campanian), Gorro Frigio Formation, Argentina; based on Bonaparte et al. (1990) and MACN CH 894. b, composite skull of a generalized baryonychid; mainly based on Suchomimus tenerensis (MNN GDF 501, 503-506) and Irritator challenged (SMNS 58022), with some elements reconstructed after Baryonyx walkeri (BMNH R 9951). c, carcharodontosaurid Carcharodontosaurus sahariens, Late Cretaceous (Cenomanian), Kem Kem beds, Morocco; based on Sereno et al. (1996) and SGM-Din 1, unpreserved elements shaded. D, dromaeosaurid Velociraptor mongoliensis, Late Cretaceous (Campanian), Djadokhta Formation, Mongolia; based on Barsbold (1983), Barsbold and Osmólska (1999), and AMNH 6515. e, ornithomimosaur Dromiceiomimus brevitertius, Late Cretaceous (Maastrichtian), Horseshoe Canyon Formation, Alberta, Canada; redrawn from Russell (1972). F, oviraptorosaur Oviraptor philoceratops, Late Cretaceous (Campanian), Djadokhta Formation, Mongolia; redrawn from Barsbold et al. (1990). G, therizinosauroid Erlikosaurus andrewsi, Late Cretaceous (Cenomanian- Turonian), Baynshiren Svita, Mongolia; based on Clark et al. (1994). H, tyrannosaurid Gorgosaurus libratus, Late Cretaceous (Campanian), Judith River Formation, Alberta, Canada, redrawn from Molnar et al. (1990). Abbreviations as in Text-figures 4 and 5, and: acc. op., accessory opening of unknown function in the premaxilla of Oviraptor (Barsbold et al. 1990); amf, anterior maxillary foramen; pn, pneumatic openings. Scale bars represent 50 mm (d-g) and 100 mm (a-c, h).
FIGURES 1–3 in Late Cretaceous thrips (Thysanoptera) from Hti Lin amber
FIGURES 1–3. New Terebrantia from Hti Lin amber. (1) Avitrips yellae gen. et sp. n. holotype female (MU-Fos-128/1), lateral view. (2–3) Campanithrips kyakhei gen. et sp. n. holotype female (MU-Fos-129/1); (2) dorsal view, encircled red: pollen grain attached to the antenna of the thrips; (3) left fore wing.
Data from: Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the U.S. Gulf Coastal Plain
The late Mesozoic through early Cenozoic is an interval of significant biologic turnover and ecologic reorganization within marine assemblages, but the timing and causes of these changes remain poorly understood. Here, we quantify the pattern and timing of changes in the diversity (richness and evenness) and ecology of local (i.e., sample level) mollusk-dominated assemblages during this critical interval using field-collected and published datasets from the US Gulf Coastal Plain. We test whether the biologic and ecologic changes observed primarily at the global level during this time are also expressed at the local level, and whether the end Cretaceous (K/Pg) mass extinction and recovery moderated these trends. To explore whether environment had any effect on these patterns, we examine data from shallow subtidal and offshore settings. Assemblages from both settings recovered to pre-extinction diversity levels rapidly, in less than 7 million years. Following initial recovery, diversity remained relatively unchanged in both settings. The trajectory of ecological restructuring was distinct for each setting in the wake of the K/Pg extinction. In offshore assemblages, the abundance and number of predatory carnivorous taxa dramatically increased, and surficial sessile suspension feeders were replaced by more active suspension feeders. In contrast, shallow subtidal assemblages did not experience ecological reorganization following the K/Pg extinction. The distinct ecological patterns displayed in each environment follow onshore-offshore patterns of innovation, whereby evolutionary novelties first appear in onshore settings relative to offshore habitats. Increased predation pressure may explain the significant ecological restructuring of offshore assemblages, whereby the explosive radiation of predators drove changes in their prey. Habitat-specific ecological restructuring, and its occurrence solely during the recovery interval, implies that disturbance and incumbency were also key in mediating these ecological changes.
Data from: Discovery of proteinaceous moieties in Late Cretaceous dinosaur eggshells
<p>The documentation of proteinaceous soft tissues in fossils from deep time remains controversial. Often this has been attributed to the laboratory or other modes of modern contamination. Here we provide incontrovertible evidence for the preservation of proteinaceous moieties in the Maastrichtian dinosaur eggshells using pyrolysis-GC×GC-TOFMS. The presence of nitrogen-bearing organic molecules along with diketodipyrrole suggest that the proteinaceous moieties can survive diagenesis. The preservation of these proteinaceous moieties has been attributed to deposition in a palustrine flat environment under subaerial conditions and entrapment of organic material by the eggshell calcitic units. The present study demonstrates that the preservation of nitrogen-bearing macromolecules in Mesozoic fossil remains is not impossible provided the depositional environments and diagenetic processes are propitious. The survival of nitrogen-bearing macromolecule in deep time under subaerial depositional settings will open a new avenue to the research on soft tissue preservation.</p>
FIGURE 11 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 11. Strict consensus tree depicting the phylogenetic relationships of Achillesaurus manazzonei using the dataset of Xu and Norell (2004; See Appendix). Clades: 1, Alvarezsauridae; 2, Mononykinae.
FIGURE 8 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 8. Achillesaurus manazzonei. Distal portion of left tibia and astragalus in cranial (A), lateral (B), caudal and distal (C), and medial (D) views. Abbreviations: apa, ascending process of astragalus; as, astragalus; clb, craniolateral buttress; fca, facet for the calcaneum; ti, tibia; tim, tibial malleolus. Scale bar represents 20 mm. Grey areas indicate broken bone, dotted indicates matrix.
FIGURE 5 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 5. Comparison of the ilium among Alvarezsauridae. A, Achillesaurus manazzonei (inverted); B, Alvarezsaurus calvoi (modified from Bonaparte 1991 and MUCPV 54); C, Patagonykus puertai (modified from Novas 1997); D, Shuvuuia deserti (modified from Chiappe et al. 2002). Not to scale.
FIGURE 2 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 2. Achillesaurus manazzonei. Portion of holotype skeleton as preserved before the isolation of each bone. Abbreviations: as, astragalus; c1, first caudal; c2, second caudal; c?4, possible fourth caudal; f, femur; il, ilium; mt II, second metatarsal; mt III, third metatarsal; s, last sacral; ti, tibia. Scale bar represents 50 mm. Grey area indicates matrix.
FIGURE 7 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 7. Comparison of the proximal portion of the femur among Alvarezsauridae in cranial and medial views. A, Achillesaurus manazzonei (inverted); B, Alvarezsaurus calvoi (modified from Bonaparte 1991 and MUCPV 54); C, Patagonykus puertai (modified from Novas 1997). Not to scale.
FIGURE 10 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 10. Achillesaurus manazzonei. Proximal portion of left metatarsal II, III, and IV in cranial (A) and caudal (B) views, with accompanying reconstruction of proximal view. Scale bar represents 20 mm. Grey areas indicate broken bone, dotted indicates matrix.
FIGURE 1 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 1. Location map of Paso Córdova, Río Negro Province, Argentina, where the holotype of Achillesaurus was found.
FIGURE 4 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 4. Achillesaurus manazzonei. Left ilium in dorsolateral (A) and medioventral (B) views. Abbreviations: ar, attachment area for the ribs of the last sacral vertebra; bs, brevis shelf; ib, iliac blade; pi, ischial pedicel; pp, pubic pedicel. Scale bar represents 20 mm. Grey areas indicate broken bone, dotted indicates matrix.
FIGURE 3 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 3. Achillesaurus manazzonei. Last sacral, and first and second caudals in articulation in lateral (A) and dorsal (B) views; and possible fourth biconcave sacral in lateral (C), ventral (D), cranial (E), and caudal (F) views. Abbreviations: f, fossa; ha, haemal arch; k, ventral keel; nc, neural canal; ns, neural spine; poz, postzygapophysis; prz, prezygapophysis; tp, transverse process. Scale bar represents 10 mm. Grey areas indicate broken bone, dotted indicates matrix.
FIGURE 6 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 6. Achillesaurus manazzonei. Proximal portion of left femur in cranial (A), medial (B), and caudal (C) views. Abbreviations: at, anterior throchanter; fh, femoral head; fn, femoral neck. Scale bar represents 20 mm. Grey areas indicate broken bone, dotted indicates matrix.
FIGURE 9 in Achillesaurus manazzonei, a new alvarezsaurid theropod (Dinosauria) from the Late Cretaceous Bajo de la Carpa Formation, Río Negro Province, Argentina
FIGURE 9. Comparison of the distal portion of the tibia among Alvarezsauridae in cranial and caudal views. A, Achillesaurus manazzonei (inverted); B, Alvarezsaurus calvoi (modified from Bonaparte 1991 and MUCPV 54); C, Patagonykus puertai (modified from Novas 1997). Not to scale.
Data From: Phylogenomics reveals accelerated late Cretaceous diversification of bee flies (Diptera: Bombyliidae)
<p><span>Bombyliidae is a very species-rich and widespread family of parasitoid flies with more than 250 genera classified into 17 extant subfamilies. However, little is known about their evolutionary history or how their present-day diversity was shaped. Transcriptomes of 15 species and anchored hybrid enrichment (AHE) sequence captures of 86 species, representing 94 bee fly species and 14 subfamilies, were used to reconstruct the phylogeny of Bombyliidae. We integrated data from transcriptomes across each of the main lineages in our AHE tree to build a data set with more genes (550 loci versus 216 loci) and higher support levels. Our overall results show strong congruence with the current classification of the family, with 11 out of 14 included subfamilies recovered as monophyletic. Heterotropinae and Mythicomyiinae are successive sister groups to the remainder of the family. We examined the evolution of key morphological characters through our phylogenetic hypotheses and show that neither the "sand chamber subfamilies" nor the "Tomophthalmae" are monophyletic in our phylogenomic analyses. Based on our results, we reinstate two tribes at the subfamily level (Phthiriinae stat. rev. and Ecliminae stat. rev.) and we include the genus <em>Sericosoma</em> Macquart (previously <em>incertae sedis</em>) in the subfamily Oniromyiinae, bringing the total number of bee fly subfamilies to 19. Our dating analyses indicate a Jurassic origin of the family (165–194 Ma), with the sand chamber evolving early in bee fly evolution, in the late Jurassic or mid-Cretaceous (100–165 Ma). We hypothesize that the angiosperm radiation and the hothouse climate established during the late Cretaceous accelerated the diversification of bee flies, by providing an expanded range of resources for the parasitoid larvae and nectarivorous adults.</span></p>
FIGURE 2 in Revised diagnoses of Hadrosaurus foulkii Leidy, 1858 (the type genus and species of Hadrosauridae Cope, 1869) and Claosaurus agilis Marsh, 1872 (Dinosauria: Ornithopoda) from the Late Cretaceous of North America
FIGURE 2. (a) Right ilium of the holotype specimen of Claosaurus agilis (YPM 1190) in lateral view. The horizontal and double-arrowed white lines indicate the breadth of the supraacetabular crest being approximately 75 per cent of the length of the central plate of the ilium. The vertical white arrow indicates the position of the ventral apex of the supraacetabular crest relative to the posteroventral corner (black arrow) of the posterior tuberosity of the ischial peduncle. (b) Line drawing of the right ilium of YPM 1190 showing in gray the areas with plaster reconstruction.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.