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.
191
datasets available to search
ShareScore release 0.7.1
Dataset results
191 results for “Paleoecology”
Fig. 1 in Paleoecology of the first Devonian-like sclerobiont association on Permian brachiopods from southeastern Mexico
Fig. 1. Map of Mexico and geological map of the studied locality.
Рис. 11. Характер фрагментации створок приморского гребешка (Mizuhopecten yessoensis) иЗ раскопа 1. in Mollusks from the shell-midden of the Telyakovskogo 2 site in southern Primorye (Yankovskaya culture), their paleoecology and role in paleoeconomy
Рис. 11. Характер фрагментации створок приморского гребешка (Mizuhopecten yessoensis) иЗ раскопа 1.
FIGURE 16 in Late Messinian mollusks and vertebrates from Moncucco Torinese, north-western Italy. Paleoecological and paleoclimatological implications
FIGURE 16. Relative abundances of the murid taxa within each murid assemblage of Moncucco Torinese.
Data from: First report of silicified wood from a late Pennsylvanian intramontane wetland of the Pyrenees: systematic affinities and paleoecological implications
<p><span>The first anatomically preserved wood specimens of an upland Carboniferous flora from the Iberian Peninsula are reported from the Erillcastell Basin </span><span>(Eastern Pyrenees, Catalonia, Spain)</span><span>. Two taxa are described, a calamitacean Equisetale (<em>Arthropitys</em> sp.) and a Cordaitale (<em>Dadoxylon</em> sp.). The <em>Arthropitys</em> specimen shows fusiform multiseriate rays composed of square parenchyma cells with conspicuous uniseriate or multiseriate simple pits. These pits are located near the transverse walls and occasionally in the tangential walls. The tracheids vary in lumen size, with scalariform-bordered pits on their radial walls and multiseriate pits in their cross-field areas. The <em>Dadoxylon</em> specimen commonly has uniseriate fusiform rays. The tracheids are long, with a square shape in transverse section. Their radial walls bear araucarian pitting with a uni- to triseriate arrangement. The pits are circular with a spindle-shaped aperture. Comparison of the Erillcastell specimens with coeval species from Europe indicates that they could belong to new species. </span><span>T</span><span>he good preservation of the new fossil wood yields significant palaeoenvironmental information. The lack of marked growth rings in both specimens and the presence of tyloses in <em>Dadoxylon</em> suggest that the climate in the intramontane basins of the Pyrenees was slightly seasonal </span><span>towards the end of the Carboniferous. This contrasts with the marked seasonality of coeval lowland basins. Such upland habitats may have enhanced the survival of plants adapted to humid conditions in a global context of increasing aridity.</span></p>
Supplement to: Early Cretaceous climate for the southern Tethyan Ocean: insights from the geochemical and paleoecological analyses of extinct cephalopods
<p>One file (excel) containing XRPD results and Table S1-S6 with details of the clumped isotope, stable carbon isotope, and trace elements analyses that refers to the manuscript.</p>
Supplement to: Early Cretaceous climate for the southern Tethyan Ocean: insights from the geochemical and paleoecological analyses of extinct cephalopods
<p>One file (excel) containing XRPD results and Table S1-S6 with details of the clumped isotope, stable carbon isotope, and trace elements analyses that refers to the manuscript.</p>
Data from: Pterotheca (Gastropoda) from the Telychian (Silurian) Xiushan formation of South China: Taxonomy, paleoecology and paleogeography
Open the record for dataset details and reuse information.
Data from: Dietary adaptations and paleoecology of Lophialetidae (Mammalia: Tapiroidea) from the Eocene of the Erlian Basin, China: Combined evidence from mesowear and stable isotope analyses
Open the record for dataset details and reuse information.
Data from: Overprinting of taphonomic and paleoecological signals across the forest-prairie environmental gradient, mid-continent of North America
Open the record for dataset details and reuse information.
Comparative Spatial Paleoecology: Assessing Niche Competition between Eocene North American Multituberculates and Rodents Regarding Forest Resources to Elucidate the Cause of Multituberculate Extinction
Open the record for dataset details and reuse information.
Data from: First report of silicified wood from a late Pennsylvanian intramontane wetland of the Pyrenees: systematic affinities and paleoecological implications
Open the record for dataset details and reuse information.
Paleobiogeography, paleoecology, diversity, and speciation patterns in the Eublastoidea (Blastozoa: Echinodermata)
<p>Understanding the distribution of taxa in space and time is key to understanding diversity dynamics. The fossil record provides an avenue to assess these patterns on vast timescales and through major global changes. The Eublastoidea were a conservatively plated Paleozoic echinoderm clade that range from the middle Silurian to the end Permian. The geographic distribution of the eublastoids, as a whole, has been qualitatively assessed but has historically lacked a quantitative analysis. This is the first examination of the Eublastoidea using probabilistic methods within the R package BioGeoBEARS to assess macroevolutionary trends. Results provide an updated understanding of eublastoid diversity with new peaks and troughs in diversity through their evolutionary history. Lithology is examined in an evolutionary framework and does not have clear evolutionary trends and there is much work to be done regarding environmental preferences. Biogeographic patterns do not recover precise group origins but do support the previous work that outlines Eublastoidea as a Laurentian clade. Sympatric speciation events dominant the clade's history but are likely exaggerated due to the highly combined areas. Vicariance events are rare and restricted to the Silurian and Devonian and dispersal events are more common throughout the evolutionary history. Pathways allowing for lineage migrations are noted between Southern Laurussia and China in the Devonian and Carboniferous, and Southern Laurussia and Eastern Gondwana in the Carboniferous. Future work will include the addition of more non-Laurentian species into the estimated phylogeny to better estimate these global patterns.</p>
FIGURE 1. A in Tyrannosaurus rex from the Upper Cretaceous (Maastrichtian) North Horn Formation of Utah: biogeographic and paleoecologic implications
FIGURE 1. A. Skeletal restoration of UMNH 11000, Tyrannosaurus rex, with preserved elements highlighted. Right postorbital and squamosal of UMNH 11000 are shown separately in right lateral view. Abbreviations: co, cornual ossification; ltf, lateral temporal fenestra; o, orbit; PO, postorbital; qjp, quadratojugal process of squamosal; sp, suborbital process; SQ, squamosal. Scale bar equals 10 cm. B. Postorbitals and squamosals of various tyrannosaurids viewed in right lateral view: Gorgosaurus, TMP 91.36.500 (reflected and modified after Currie, 2003a); Albertosaurus, TMP 81.10.1 (reflected and modified after Currie 2003b); Daspletosaurus, combination of NMC 8506 and TMP 2001.36.1 (reflected and modified after Currie 2003b); Tarbosaurus, ZPAL MgD-1/4 (reflected and modified after Hurum and Sabath, 2003); Tyrannosaurus, FMNH PR 2081 (reflected and modified after Brochu, 2003) and UMNH VP 11000.
Data from: Paleoecological and stratigraphic controls on eurypterid Lagerstätten: a model for preservation in the mid-Paleozoic
Recent studies of eurypterid paleoecology suggest that formation of eurypterid Lagerstätten in the mid-Paleozoic of Laurentia was controlled by the presence of an ecological–taphonomic window that recurred predictably in nearshore, marginal environments during transgressions. We tested this hypothesis by performing a high-resolution taxonomic, environmental, and stratigraphic survey and quantitative analysis of all Silurian–Lower Devonian eurypterid-bearing intervals in the Appalachian basin, the most prolific region for eurypterid remains in the world. Canonical correspondence analysis of sedimentological and faunal associations revealed a strong lithologic gradient between groupings of eurypterid genera and associated taxa across the basin, and a significant association of eurypterids with microbialites (thrombolites, stromatolites) and evaporitic structures. Field observations confirmed that, stratigraphically, eurypterids in the basin frequently occur above the microbialite structures and beneath evaporites and other indicators of increased salinity or subaerial exposure. Following interpretation of these features within a sequence stratigraphic framework, we present a preservational model in which (1) eurypterids inhabited nearshore settings following freshening conditions concomitant with minor transgressions, (2) their remains were subsequently buried by storms or microbialite sediment baffling, and (3) subsequent long-term preservation of tissues was facilitated by regression and cyclical shallowing-up successions that promoted hypersalinity and anoxia. In the central and southern region of the basin, where microbial structures and evidence for hypersalinity are less common, a similar pattern of cyclical shallowing-upward deposition within eurypterid-bearing units holds. Thus, eurypterid preservation appears to reflect a combination of ecological preferences and abiotic conditions that promoted inhabitation and eventual preservation within the same setting. This study provides the first quantitative support for a sea level–based control on preservation of eurypterids and adds to the growing body of evidence that suggests that analysis of exceptional preservation in the fossil record benefits from interpretation within a sequence stratigraphic framework.
Data from: Integrating phylogeography and paleoecology to investigate the origin and dynamics of hybrid zones: insights from two widespread North American firs
Secondary contact between closely related taxa routinely occurs during postglacial migrations. After initial contact, the location of hybrid zones may shift geographically or remain spatially stable over time in response to various selective pressures or neutral processes. Studying the extent and direction of introgression using markers having contrasted levels of gene flow can help unravel the historical dynamics of hybrid zones. Thanks to their contrasted maternal and paternal inheritance, resulting in different levels of gene flow for mitochondrial and chloroplast DNA (mtDNA and cpDNA), the Pinaceae stand out as a relevant biological model for this purpose. The objective of the study was to assess whether the hybrid zone between Abies balsamea and Abies lasiocarpa (two largely distributed Pinaceae) has moved or remained stable over time by analysing the distribution of cytoplasmic DNA variation as well as published palaeobotanical data. Interspecific gene flow was higher for cpDNA than mtDNA markers; hence, the geographic distribution of mitotypes was more congruent with species distributions than chlorotypes. This genetic signature was contrary to expectations under a moving hybrid zone scenario, as well as empirical observations in other conifers. Genetic evidence for this rare instance of stable hybrid zone was corroborated by the colonization chronology derived from published fossil data, indicating that the two fir species initially came into contact in the area corresponding to the current sympatric zone 11 kyr ago. While an explanatory analysis suggested the putative influence of various environmental factors on the relative abundance of cytoplasmic genome combinations, further research appears necessary to assess the role of both demographic history and selective factors in driving the dynamics of hybrid zones.
Data from: Morphometrics and paleoecology of Catenipora (Tabulata) from the Xiazhen Formation (Upper Ordovician), Zhuzhai, South China
Catenipora is one of the most common tabulate coral genera occurring in various lithofacies in the Upper Ordovician Xiazhen Formation at Zhuzhai in South China. A combination of traditional multivariate analysis and geometric morphometrics is applied to a large number of specimens to distinguish and identify species. Based on three major principal components extracted from 11 morphological characters, three major groups as determined by the cluster-analysis dendrogram are considered to be morphospecies. Their validity and distinctiveness are confirmed by discriminant analysis, descriptive statistics, and bivariate plots. Tabularium area and common wall thickness are the most meaningful characters to distinguish the three morphospecies. Geometric morphometrics is adopted to compare the morphospecies with types and/or figured specimens of species previously reported from the vicinity of Zhuzhai. Despite discrepancies in corallite size, principal component analysis and discriminant analysis, as well as consideration of overall morphological characteristics, indicate that the morphospecies represent C. zhejiangensis Yu in Yu et al., 1963, C. shiyangensis Lin and Chow, 1977, and C. dianbiancunensis Lin and Chow, 1977. Catenipora occurs in seven stratigraphic intervals in the Xiazhen Formation at Zhuzhai, representing a variety of heterogeneous environments. The coralla preservation is variable due to differential compaction; coralla preserved in limestones are commonly intact and in growth position, whereas those in shales are mostly crushed or fragmentary. The size and shape of corallites are considered primarily to be species-specific characters, but are also related to the depositional environments. In all species, morphological characters, including corallite size, septal development, and shape and size of lacunae, show high variability in accordance with lithofacies and stratigraphic position. The intraspecific differences in corallite size at various localities in the Zhuzhai area may indicate responses to local environmental factors, but may also reflect genetic differences if there was limited connection among populations.
FIGURE 3. Dispersion curves for Araripe cearagryllids. A and B in The Orthoptera (Ensifera) from the Santana formation (Early Cretaceous, Northeast Brazil): A statistical and paleoecological approach, with description of new taxa
FIGURE 3. Dispersion curves for Araripe cearagryllids. A and B fore wing length and ovipositor, respectively for Euclydes ramosfernandesi Martins-Neto, 2007 (Stenopelmatoidea), a possible mimetic Orthoptera of cearagryllids.
FIGURE 1. A in The Orthoptera (Ensifera) from the Santana formation (Early Cretaceous, Northeast Brazil): A statistical and paleoecological approach, with description of new taxa
FIGURE 1. A) Notocearagryllus dutrae Martins-Neto, 1999, modified from Martins-Neto (1998); B) Notocearagryllus arturandradai n. sp., drawn from holotype; C) Allocearagryllus leipnitzi n. sp., drawn from holotype; D) Cearagryllus robustus Martins-Neto, 1991, redrawn from holotype;; E) Cryptocearagryllus revelatus n. gen. et n. comb., redrawn from holotype. Scale bar 5 mm.
FIGURE 2 in The Orthoptera (Ensifera) from the Santana formation (Early Cretaceous, Northeast Brazil): A statistical and paleoecological approach, with description of new taxa
FIGURE 2. Fore wing (A-C), ovipositor (D-G) and hind legs (H-K) details of the Santana Formation Cearagryllinae (females). A, D, H) Cearagrylloides perforatorius n. gen. et n. comb., drawn from the specimen RGMN-506 (A), CV- 6015 (D, H); B, E) Cearagrylloides microcephalus n. gen. et n. comb., drawn from the specimen RGMN-508 (B), and GP/1T-1680 (E); C, G, K) Paracearagryllus poliacanthus n. gen. et n. comb., drawn from the specimen RGMN-338 (C, G), and from holotype (K); F) Cearagrylloides previstus n. gen. et n. comb., drawn from holotype. Scale bar 1 mm.
FIGURE 4 in The Orthoptera (Ensifera) from the Santana formation (Early Cretaceous, Northeast Brazil): A statistical and paleoecological approach, with description of new taxa
FIGURE 4. Euclydes ramosfernandesi Martins-Neto, 2007 reconstruction, based on the holotypus. Scale bar 5mm.
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.