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.
4,068
datasets available to search
ShareScore release 0.9.0
Dataset results
4,068 results for “geographic”
FIG. 5. — Ragechelus sahelica n. gen., n in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 5. — Ragechelus sahelica n. gen., n. sp., Indamane, southwestern Niger, late Maastrichtian; photographs of the skull, holotype MNHN-RA-2018.0031: A-F, dorsal, ventral, left lateral, anterior, right lateral and posterior views. Scale bar: 4 cm.
FIG. 3 in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 3. — Geological map of Iullemmeden basin. Extract from Greigert (1961), focused on the northeastern basin part, area of Kao to Ibeceten with Mont Indamane (Mt Igdaman). Legend, from Greigert (1961): Cr 9-8, including (from top to bottom, [Mt Indamane Maastrichtian outcropping]: 1, Upper sandstones; 2, Mosasaurus shales; 3, Lower sandstones. Cr7, lower and middle Senonian, with gypsum [including Ibéceten outcropping]; Cr6, Turonian; Cr6b, Turonian (white limestones); Cr6a, lower Turonian (Nigericeras zone); CR6a-b, lower Turonian and Upper Cenomanian (Neolobites vibrayeani zone, Tegama group sandstones); e III-VI, lower Eocene; ct, terminal continental (simplified); qa2, filled fossil valleys; qd1, fixed oriented recent dunes (barchans); F, fossils at Mont Indamane and Ilatarda.
FIG. 2 in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 2. — Geographical location, northern to southern, of: Mont In Tahout area (Nigeremys locality), Indamane (Ragechelus saherica n. gen., n. sp. locality), Ibeceten (Erymnochelyine locality) and Ilatarda, fossil localities with turtles (stars), in southwestern Niger, Tahoua district between Niamey and Agades, Iullemeden basin, Upper Cretaceous. Purple line, raised edge of the Upper Cretaceous outcropping (symbols: "10" in Fig. 1, "Cr 9-8" in Fig. 3), overhanging the reg with dunes including the Ibeceten Senonian outcropping (Cr7 in Fig. 3).
FIG. 4 in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 4. — Log, simplified stratigraphic section, from Greigert (1966: pl. 37)'s Mont Indamane, presenting 16 banks, from bottom to top: alternately, 1, 3, 5, gypsiferous sandy marls and 2, 4, fine and silty sandstones; at top of 5, large dinosaur site (of Greigert et al. [1954]); 6, grey and black gypsiferous marls; 7, gypsiferous marls; 8, phosphatic breccia: fish, crocodile, batoids, sawfish (bone bed of the new turtle skull); 9, white sandstones: turtles, selachians; 10, black marls, salt; 11, 13, 15, yellow marls [with Libycoceras and Laffiteines]; 12, lumachella, with Rs (Veniella [Roudaireia] ouressensis); 14, lumachella; 16, ferrugineous sandstones (overlying crust). C LS, bank C in Lingham-Soliar (1991 [after David Ward]); D et al., Dikouma et al. (1993, 1994); F, Formation; G, Greigert (1966); MS, banks 8-10, 11/14, 19 and 25 in Moody & Sutcliffe (1991). Not to scale.
FIG. 1 in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 1. — Geological map of the Iullemeden basin, extract from the Geological map of Africa, 1:10 millionth (Thiéblemont & Chêne 2016). Numbers: 1, Quaternary, 2.6-0 Ma, sedimentary; 5, Paleogene to Pleistocene, 66-0.012 Ma, sedimentary; 7, Tertiary, 66-2.6 Ma, sedimentary; 10, Upper Cretaceous, 100.5-66 Ma. Sedimentary; 12, Lower Cretaceous, 145-100.5 Ma, sedimentary; 39, Paleozoic; 45, 46, Proterozoic; 70, 86, 87, Archean. Blue square, area represented Fig. 2 (geographical map). Orange square, area represented in Fig. 3 (Greigert's geological map).
Data from: The evolution of environmental tolerance and range size: A comparison of geographically restricted and widespread Mimulus
<p>The geographic ranges of closely related species can vary dramatically, yet we do not fully grasp the mechanisms underlying such variation. The niche breadth hypothesis posits that species that have evolved broad environmental tolerances can achieve larger geographic ranges than species with narrow environmental tolerances. In turn, plasticity and genetic variation in ecologically important traits and adaptation to environmentally variable areas can facilitate the evolution of broad environmental tolerance. We used five pairs of western North American monkeyflowers to experimentally test these ideas by quantifying performance across eight temperature regimes. In four species pairs, species with broader thermal tolerances had larger geographic ranges, supporting the niche breadth hypothesis. As predicted, species with broader thermal tolerances also had more within-population genetic variation in thermal reaction norms and experienced greater thermal variation across their geographic ranges than species with narrow thermal tolerances. Species with narrow thermal tolerance may be particularly vulnerable to changing climatic conditions due to a lack of plasticity and insufficient genetic variation to respond to novel selection pressures. Conversely, species experiencing high variation in temperature across their ranges may be buffered against extinction due to climatic changes because they have evolved tolerance to a broad range of temperatures.</p>
Data from: Genetic and morphological evidence of a geographically widespread hybrid zone between two crocodile species, Crocodylus acutus and Crocodylus moreletii
<p>Hybrid zones represent natural laboratories to study gene flow, divergence and the nature of species boundaries between closely related taxa. We evaluated the level and extent of hybridization between <em>Crocodylus moreletii </em>and<em> C. acutus </em>using genetic and morphological data on 300 crocodiles from 65 localities. To our knowledge, this is the first genetic study that includes the entire historic range and sympatric zone of the two species. Contrary to expectations, Bayesian admixture proportions and maximum likelihood estimates of hybrid indexes revealed that most sampled crocodiles were admixed and that the hybrid zone is geographically extensive, extending well beyond their historical region of sympatry. We identified a few geographically isolated, non-admixed populations of both parental species. Hybrids do not appear to be F<sub>1</sub>s or recent backcrosses, but rather are more likely later-generation hybrids, suggesting that hybridization has been going on for several to many generations and is mostly the result of natural processes. <em>C. moreletii </em>is not the sister species of <em>C. acutus,</em> suggesting that the hybrid zone formed from secondary contact rather than primary divergence. Non-admixed individuals from the two species were distinguishable based on morphological characters, whereas hybrids had a complex mosaic of morphological characters that hinders identification in the wild. Very few non-admixed <em>C. acutus</em> and <em>C. moreletii</em> populations exist in the wild. Consequently, the last non-admixed <em>C. moreletii</em> populations have become critically endangered. Indeed, not only the parental species but also the naturally occurring hybrids should be considered for their potential conservation value.</p>
Convergent geographic patterns between grizzly bear population genetic structure and Indigenous language groups in coastal British Columbia
<p>Microsatellite loci calls, sex, and mean centre detection per individual (GrizzlyMicroLociMeanXY.csv) and code associated with the paper: "Convergent geographic patterns between grizzly bear population genetic structure and Indigenous language groups in coastal British Columbia". All code is from published R packages or GitHub repositories not created by the author. Code used is best described in these alternate resources. </p>
FIGURES 1 – 8. Lopheucoila anastrephae. 1 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 1 – 8. Lopheucoila anastrephae. 1. Head, anterior view (183 x, 100 m); 2. Female antenna (58 x, 250 m); 3. Flagellomerous 1 and 2 of male (170 x, 100 m); 4. Pronotal plate (160 x, 100 m); 5. Head, mesosoma and anterior part of metasoma, lateral view (74 x, 250 m); 6. Mesosoma, dorsal view (172 x, 100 m); 7. Forewing (10 x, 0,5 mm); 8. Metacoxa (163 x, 100 m).
FIGURES 9 – 15. Tropideucoila weldi. 9 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 9 – 15. Tropideucoila weldi. 9. Head, anterior view (228 x, 100 m); 10. Female antenna (179 x, 100 m); 11. Pronotal plate (391 x, 20 m); 12. Mesosoma and anterior part of metasoma, lateral view (168 x, 100 m); 13. Head and mesosoma, dorsal view (215 x, 100 m); 14. Forewing (10 x, 0,25 mm); 15. Metacoxa (261 x, 100 m).
FIGURES 40 – 47. Trybliographa infuscata. 40 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 40 – 47. Trybliographa infuscata. 40. Head, anterior view (218 x, 100 m); 41. Female antenna (109 x, 100 m); 42. Flagellomerous 1 and 2 of male (182 x, 100 m); 43. Pronotal plate (568 x, 20 m); 44. Mesosoma and anterior part of metasoma, lateral view (161 x, 100 m); 45. Mesosoma, dorsal view (193 x, 100 m); 46. Forewing (10 x, 0,5 mm); 47. Metacoxa (161 x, 100 m).
FIGURES 32 39. A g anaspis pelleranoi. 32 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 32 39. A g anaspis pelleranoi. 32. Head, anterior view (170 x, 100 m); 33. Female antenna (97 x, 100 m); 34. Flagellomerous 1 and 2 of male (130 x, 100 m); 35. Pronotal plate (288 x, 100 m); 36. Head, mesosoma and anterior part of metasoma, lateral view (48 x, 250 m); 37. Mesosoma, dorsal view (64 x, 250 m); 38. Forewing (10 x, 0,5 mm); 39. Metacoxa (163 x, 100 m).
FIGURES 24 – 31. Odontosema anastrephae. 24 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 24 – 31. Odontosema anastrephae. 24. Head, anterior view (201 x, 100 m); 25. Female antenna (135 x, 100 m); 26. Flagellomerous 1 and 2 of male (145 x, 100 m); 27. Pronotal plate (130 x, 100 m); 28. Head, mesosoma and anterior part of metasoma, lateral view (37 x, 250 m); 29. Mesosoma, dorsal view (68 x, 250 m); 30. Forewing (10 x, 0,5 mm); 31. Metacoxa (84 x, 100 m).
FIGURES 16 – 23. Dicerataspis grenadensis. 16 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 16 – 23. Dicerataspis grenadensis. 16. Head, anterior view (140 x, 100 m); 17. Female antenna (204 x, 100 m); 18. Flagellomerous 1 and 2 of male (280 x, 100 m); 19. Pronotal plate (366 x, 20 m); 20. Head, mesosoma and anterior part of metasoma, lateral view (120 x, 100 m); 21. Mesosoma, dorsal view (130 x, 100 m); 22. Forewing (10 x, 0,5 mm); 23. Metacoxa (130 x, 100 m).
FIGURES 56 – 63. Leptopilina boulardi. 56 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 56 – 63. Leptopilina boulardi. 56. Head, anterior view (407 x, 20 m); 57. Female antenna (309 x, 20 m); 58. Flagellomerous 1 and 2 of male (267 x, 20 m); 59. Pronotal plate (790 x, 20 m); 60. Head, mesosoma and anterior part of metasoma, lateral view (100 x, 100 m); 61. Mesosoma, dorsal view (335 x, 20 m); 62. Forewing (10 x, 0.14 mm); 63. Metacoxa (230 x, 100 m).
FIGURES 48 – 55. Aganaspis nordlanderi. 48 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 48 – 55. Aganaspis nordlanderi. 48. Head, anterior view (174 x, 100 m); 49. Female antenna (66 x, 250 m); 50. Flagellomerous 1 and 2 of male (84 x, 100 m); 51. Pronotal plate (105 x, 100 m); 52, Head, mesosoma and anterior part of metasoma, lateral view (35 x, 500 m); 53. Mesosoma, dorsal view (74 x, 250 m); 54. Forewing (10 x, 0,5 mm); 55. Metacoxa (120 x, 100 m).
FIGURES 9 – 12. Tympallopatrum geographical distributions. — 9. T. longitudum. — 10. T. aureolum. — 11. T. curvicostum. — 12. T in A revision of the Western Australian endemic humicolous beetle genus Tympallopatrum Perkins (Coleoptera: Hydraenidae)
FIGURES 9 – 12. Tympallopatrum geographical distributions. — 9. T. longitudum. — 10. T. aureolum. — 11. T. curvicostum. — 12. T. callosum.
FIGURES 22 – 25. Gymnanthelius geographical distributions. — 22. G. opacicollis. — 23. G. hieroglyphicus. — 24. G. t u n i c u s. — 25. G in A revision of the Australian endemic water beetle genus Gymnanthelius Perkins (Coleoptera: Hydraenidae)
FIGURES 22 – 25. Gymnanthelius geographical distributions. — 22. G. opacicollis. — 23. G. hieroglyphicus. — 24. G. t u n i c u s. — 25. G. maxipunctus.
FIGURES 18 – 21. Gymnanthelius geographical distributions. — 18. G. clypeatus. — 19. G. cupreus. — 20. G. lamingtonensis. — 21. G in A revision of the Australian endemic water beetle genus Gymnanthelius Perkins (Coleoptera: Hydraenidae)
FIGURES 18 – 21. Gymnanthelius geographical distributions. — 18. G. clypeatus. — 19. G. cupreus. — 20. G. lamingtonensis. — 21. G. porchi.
FIGURES 6 7 in Redescription, shell variability and geographic distribution of Plagiodontes dentatus (Wood, 1828) (Gastropoda: Orthalicidae: Odontostominae) from Uruguay and Argentina
FIGURES 6 7. SEM photographs of the teleoconch sculpture near the aperture lip. 6, Plagiodontes dentatus; 7, P. multiplicatus.
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.