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”
Morphology and paleobiology of the Late Cretaceous large-sized shark Cretodus crassidens (Dixon, 1850) (Neoselachii; Lamniformes)
The definition of the Cretaceous shark genus <i>Cretodus</i> Sokolov, 1965, was primarily based on isolated teeth. This genus includes five species. Among these, <i>C. houghtonorum</i> is the only species based on a partially preserved skeleton. Here, the taxonomic attribution of a virtually complete skeleton of <i>Cretodus </i>from the Turonian of northeastern Italy is discussed, together with a few specimens from the Turonian of England. One of these latter is investigated through micropaleontological analysis to determine its stratigraphic position. The material is referred to <i>Cretodus crassidens</i> (Dixon, 1850), whose diagnosis is emended herein. The dentition is tentatively reconstructed, exhibiting strong similarities with the congeneric species, though it differs in having strong vertical folds on the main cusp labial face, mesiodistally broad tooth aspect, weak and well-spaced 'costulae' at crown baseand different dental formula in the number of parasymphyseal and lateral rows. Some tooth malformations are interpreted as feeding-related or senile characters. The Italian specimen suggests that <i>Cretodus crassidens</i> had a wide and laterally expanded mouth and head, a stout body and attained a gigantic size. <i>Cretodus crassidens</i> was a moderate speed swimming shark ecologically similar to the extant tiger shark <i>Galeocerdo cuvier</i>. The age estimate from vertebral bands counting suggests that the Italian individual was at least 23 years old and the growth model indicates a longevity of 64 years and a maximum attainable total length of 9-11 m. <i>Cretodus crassidens</i> occurs both in Boreal and Tethyan domains, implying a broad paleobiogeographic distribution and a preference towards the offshore settings.
FIGURE 10 in Gastropods from the Late Jurassic - Early Cretaceous seep deposits in Spitsbergen, Svalbard
FIGURE 10. List of gastropod taxa found in the Mesozoic seeps in Spitsbergen (open circles) and their stratigraphical ranges in deep-water chemosynthesis̄based associations (solid circles) and non-seep first occurrences (open rectangles). Solid ranges show taxa ranges in deep-water chemosynthesis̄based associations while dotted lines show shallow-water ranges. The taxa in bold occur typically in the chemosynthesis̄based associations. NZ, occurrence in moderately shallow-water seeps in Novaya Zemlya (Hryniewicz et al. 2015b). T, Report of a Hikidea-like gastropod in a seep in Turkey (Kiel et al. 2017). Note several first occurrences in Spitsbergen seeps.
FIGURE 8. A–C in Gastropods from the Late Jurassic - Early Cretaceous seep deposits in Spitsbergen, Svalbard
FIGURE 8. A–C. Cretadmete sp., (PMO 224.762), Seep deposit #8, Sassenfjorden, Svalbard; Late Tithonian (late Jurassic). D. Gastropoda gen. et sp. indet. (PMO 217.517), Seep deposit #2, Sassenfjorden, Svalbard; late Berriasian (Early Cretaceous).
FIGURE 9 in Gastropods from the Late Jurassic - Early Cretaceous seep deposits in Spitsbergen, Svalbard
FIGURE 9. Hyalogyrina knorringfjelletensis sp. nov. Sassenfjorden, Svalbard; late Berriasian (Early Cretaceous). A, F. PMO 217.508, Seep deposit #12. B, H, I. Paratype (PMO 217.510), Seep deposit #12. C, D, E, J. Holotype (PMO 217.511a), Seep deposit #12. G. Juvenile (PMO 224.763), Seep deposit #9.
FIGURE 7 in Gastropods from the Late Jurassic - Early Cretaceous seep deposits in Spitsbergen, Svalbard
FIGURE 7. Sassenfjordia sassenfjordensis sp. nov., holotype (PMO 217.512), Seep deposit #9, Sassenfjorden, Svalbard; late Berriasian (Early Cretaceous).
FIGURE 6. A–D in Gastropods from the Late Jurassic - Early Cretaceous seep deposits in Spitsbergen, Svalbard
FIGURE 6. A–D. Abyssomelania sp. (PMO 224.758), Seep deposit #3, Sassenfjorden, Svalbard; late Tithonian (Late Jurassic). E–I.?Hokkaidoconcha sp., Seep deposit #3; late Tithonian (Late Jurassic). E. PMO 224.759. F, G. PMO 224.760. H, I. PMO 224.761.
FIGURE 5. A–H in Gastropods from the Late Jurassic - Early Cretaceous seep deposits in Spitsbergen, Svalbard
FIGURE 5. A–H. Hudlestoniella hammeri sp. nov. Seep deposit #9, Sassenfjorden, Svalbard; late Berriasian (Early Cretaceous). A, B, F. Holotype (PMO 224.754). C, G, H. Paratype (PMO224.755). D. PMO 224.756. E. PMO 224.757. I–M. Hokkaidoconcha sp. Seep deposit #12, Sassenfjorden, Svalbard; late Berriasian (Early Cretaceous). I. PMO 217.509. J, L. PMO 217.511b. K, M. PMO 217.507.
FIGURE 4 in Gastropods from the Late Jurassic - Early Cretaceous seep deposits in Spitsbergen, Svalbard
FIGURE 4. Eucycloidea bitneri sp. nov. Sassenfjorden, Svalbard. A–C. Holotype (PMO 217.235), Seep deposit #3; late Tithonian (Late Jurassic). D. Juvenile (PMO 224.753), Seep deposit #9; late Berriasian (Early Cretaceous).
FIGURE 3. A–C in Gastropods from the Late Jurassic - Early Cretaceous seep deposits in Spitsbergen, Svalbard
FIGURE 3. A–C. Hikidea svalbardensis sp. nov. Seep deposit #9, Sassenfjorden, Svalbard; late Berriasian (Early Cretaceous); holotype (PMO 217.574). D–H.?Pectinodonta borealis sp. nov. Seep deposit #9, Sassenfjorden, Svalbard; late Berriasian (Early Cretaceous). D, E, G. Holotype (PMO 217.516). F, H. Internal mould (PMO 224.752).
FIGURE 1 in Gastropods from the Late Jurassic - Early Cretaceous seep deposits in Spitsbergen, Svalbard
FIGURE 1. Map showing the location of gastropod-bearing hydrocarbon-seeps sites in Sassenfjorden area, Spitsbergen, Svalbard. Modified from Dallmann et al. (2001) and Hryniewicz et al. (2015a).
Figure 8 in Tyrannosaurs from the Late Cretaceous of western Canada
Figure 8 Daspletosaurus torosus, reconstruction of the skeleton. The length of the femur is 1000 mm,
Figure 3 in Tyrannosaurs from the Late Cretaceous of western Canada
Figure 3 Albertosaurus libratus, restoration of a hypothetical hatchling. The length of the femur is
FIGURES 7 in Re-description of Grammapsychops lebedevi Martynova, 1954 (Neuroptera: Psychopsidae) with notes on the Late Cretaceous psychopsoids
FIGURES 7. Forewing of Arctopsychops zherikhini Makarkin, 1994, holotype PIN 1832/135. A, counterpart; B, part. Scale bars = 2 mm.
FIGURES 4 in Re-description of Grammapsychops lebedevi Martynova, 1954 (Neuroptera: Psychopsidae) with notes on the Late Cretaceous psychopsoids
FIGURES 4. Forewings of Kagapsychops Fujiyama, 1978. A, holotype of K. araneus Fujiyama, 1978 (NMNS PM12004); B, holotype of K. continentalis Makarkin, 1994 (PIN 2383/496, counterpart). Scale bars are 5 mm.
FIGURES 3 in Re-description of Grammapsychops lebedevi Martynova, 1954 (Neuroptera: Psychopsidae) with notes on the Late Cretaceous psychopsoids
FIGURES 3. Forewing venation of Grammapsychops lebedevi Martynova, 1954, holotype PIN 846/1-2. Scale bar is 2 mm.
FIGURES 6 in Re-description of Grammapsychops lebedevi Martynova, 1954 (Neuroptera: Psychopsidae) with notes on the Late Cretaceous psychopsoids
FIGURES 6. Head of larva of Psychopsidae (type B) from Burmese amber (the same specimen as in Fig. 5B). A, dorsal view; B, ventral view (courtesy of Sieghard Ellenberger, Burmese-amber.com). an, antenna; lb, labrum; lp, labial palpus; md, mandible; mx, maxillary blade; pl, papillae.
FIGURES 2. Grammapsychops lebedevi Martynova, 1954, holotype PIN 846 in Re-description of Grammapsychops lebedevi Martynova, 1954 (Neuroptera: Psychopsidae) with notes on the Late Cretaceous psychopsoids
FIGURES 2. Grammapsychops lebedevi Martynova, 1954, holotype PIN 846/1-2. A, proximal part of the forewing; B, a portion of RP and its branches (some setal sockets on veins are shown by red arrows). Scale bars are 2 mm (A), 0.4 mm (B).
FIGURES 1. Grammapsychops lebedevi Martynova, 1954, holotype PIN 846 in Re-description of Grammapsychops lebedevi Martynova, 1954 (Neuroptera: Psychopsidae) with notes on the Late Cretaceous psychopsoids
FIGURES 1. Grammapsychops lebedevi Martynova, 1954, holotype PIN 846/1-2. A, specimen as preserved; B, original field label; C, PIN label. Scale bar is 2 mm.
FIGURE 3 in Re-evaluation of the taxonomic status of Vegaranina (Crustacea: Raninidae) from the Late Cretaceous of Cuba, with description of a new species
FIGURE 3. Anterior half of the holotype of U. rivasi sp. nov. with some of the most important structures. Notice the fusion between the mesogastric (msg), metagastrial (mtg) and cardiac region (cr). The two arrows indicate the presence of the open orbital fissures.
FIGURE 2 in Re-evaluation of the taxonomic status of Vegaranina (Crustacea: Raninidae) from the Late Cretaceous of Cuba, with description of a new species
FIGURE 2. Dorsal view of the nearly complete carapace of the holotype of U. rivasi sp. nov. MMC-5-68-1. T1–T7 refers to the order of the transversal terraces.
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.