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Fig. 16 in The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 16. Koenenites lamellosus (Sandberger & Sandberger, 1851). A. Lectotype 40a in the Wiesbaden collection from Nanzenbach. B. Lectotype 40a, reproduction of the figure of Sandberger & Sandberger (1850–1856: pl. 8 fig. 1). C. Probably lost specimen, original of "Goniatites sublamellosus", reproduction of the figure of Sandberger & Sandberger (1850–1856: pl. 6 fig. 2, 2a). D. Paratype 40b in the Wiesbaden collection from Nanzenbach. E. Paratype 40b, reproduction of the figure of Sandberger & Sandberger (1850–1856: pl. 8 fig. 1a–1c). F. Suture line of paratype 40b, reproduction of the figure of Sandberger &
Fig. 20 in The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
Fig. 20. Acanthoclymenia forcipifera (Sandberger & Sandberger, 1851), all Koch Coll from Oberscheld (Anna Mine). A. Specimen MB.C.22199.1. B. Specimen MB.C.30433.1. C. Specimen MB.C.30433.2.
SuperDARN data in netCDF format (2006-Jan)
<p>2006-Jan SuperDARN radar data in netCDF format. These files were produced using versions 2.5 and 3.0 of the public FitACF algorithm, using the AACGM v2 coordinate system. Cite this dataset if using our data in a publication.</p><p>The RST is available here: https://github.com/SuperDARN/rst</p><p>The research enabled by SuperDARN is due to the efforts of teams of scientists and engineers working in many countries to build and operate radars, process data and provide access, develop and improve data products, and assist users in interpretation. Users of SuperDARN data and data products are asked to acknowledge this support in presentations and publications. A brief statement on how to acknowledge use of SuperDARN data is provided below.</p><p>Users are also asked to consult with a SuperDARN PI prior to submission of work intended for publication. A listing of radars and PIs with contact information can be found here: (<a href="http://vt.superdarn.org/tiki-index.php?page=Radar+Overview">SuperDARN Radar Overview</a>)</p><p><strong>Recommended form of acknowledgement for the use of SuperDARN data:</strong></p><p>'The authors acknowledge the use of SuperDARN data. SuperDARN is a collection of radars funded by national scientific funding agencies of Australia, Canada, China, France, Italy, Japan, Norway, South Africa, United Kingdom and the United States of America.'</p>
SuperDARN data in netCDF format (2005-Jun)
<p>2005-Jun SuperDARN radar data in netCDF format. These files were produced using versions 2.5 and 3.0 of the public FitACF algorithm, using the AACGM v2 coordinate system. Cite this dataset if using our data in a publication.</p><p>The RST is available here: https://github.com/SuperDARN/rst</p><p>The research enabled by SuperDARN is due to the efforts of teams of scientists and engineers working in many countries to build and operate radars, process data and provide access, develop and improve data products, and assist users in interpretation. Users of SuperDARN data and data products are asked to acknowledge this support in presentations and publications. A brief statement on how to acknowledge use of SuperDARN data is provided below.</p><p>Users are also asked to consult with a SuperDARN PI prior to submission of work intended for publication. A listing of radars and PIs with contact information can be found here: (<a href="http://vt.superdarn.org/tiki-index.php?page=Radar+Overview">SuperDARN Radar Overview</a>)</p><p><strong>Recommended form of acknowledgement for the use of SuperDARN data:</strong></p><p>'The authors acknowledge the use of SuperDARN data. SuperDARN is a collection of radars funded by national scientific funding agencies of Australia, Canada, China, France, Italy, Japan, Norway, South Africa, United Kingdom and the United States of America.'</p>
Intrinsic excitability mechanisms of neuronal ensemble formation
<p>Neuronal ensembles are coactive groups of cortical neurons, found in spontaneous and evoked activity, that can mediate perception and behavior. To understand the mechanisms that lead to the formation of ensembles, we co-activated optogenetically and electrically layer 2/3 pyramidal neurons in brain slices from mouse visual cortex, in animals from both sexes, replicating in vitro an optogenetic protocol to generate ensembles in vivo. Using whole-cell and perforated patch-clamp pair recordings we find that, after optogenetic or electrical stimulation, coactivated neurons increase their correlation in spontaneous activity, a hallmark of ensemble formation. Coactivated neurons showed small biphasic changes in presynaptic plasticity, with an initial depression followed by a potentiation after a recovery period. Unexpectedly, optogenetic and electrical stimulation-induced significant increases in frequency and amplitude of spontaneous EPSPs, even after single-cell stimulation. In addition, we observed strong and persistent increases in neuronal excitability after stimulation, with increases in membrane resistance and reduction in spike threshold. A pharmacological agent that blocks changes in membrane resistance can revert this effect. These significant increases in excitability may partly explain the observed biphasic synaptic plasticity. We propose that cell-intrinsic changes in excitability are involved in the formation of neuronal ensembles. We propose an "iceberg" model, by which increased neuronal excitability makes subthreshold connections suprathreshold, enhancing the effect of already existing synapses, and generating a new neuronal ensemble.</p>
FIG. 16. — A-F, Chazydictya ornata n in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 16. — A-F, Chazydictya ornata n. sp., holotype CEGH-UNC 27535 a: A, B, branch transverse thin section showing autozooecial chambers and mesotheca without rods; C, branch transverse thin section showing autozooecial walls with paurostyles; D, E, tangential thin section showing autozooecial apertures and paurostyles; branch transverse thin section showing autozooecial mesotheca without rods; G, Parachasmatopora sp. A, tangential section showing reticulate colony, CEGH-UNC 27526 a. Scale bars: A, G, 0.5 mm; B, D, 0.2 mm; C, E, F, 0.1 mm.
FIG. 15. — A-H, Pseudostictoporella simplex n in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 15. — A-H, Pseudostictoporella simplex n. sp.: A-E, branch tangential section showing autozooecial chambers and apertures, holotype CEGH-UNC 27508 a; F, branch longitudinal thin section autozooecial chambers, paratype CEGH-UNC 27533 a; G, H, branch transverse thin section showing autozooecial chambers and mesotheca without rods, paratype CEGH-UNC 27533 d. Scale bars: A, 1 mm; B, C, 0.5 mm; D-H, 0.2 mm.
FIG. 17. — A-E in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 17. — A-E, Parachasmatopora sp. A: A-C, tangential section showing branches with autozooecial apertures and chambers, CEGH-UNC 27526 a; D, branch transverse section showing autozooecial chambers and laminated skeleton, CEGH-UNC 27545 a; E, branch longitudinal section showing autozooecial chambers with diaphragms and laminated skeleton, CEGH-UNC 27545 b. Scale bars: A, D, E, 0.5 mm; B, C, 0.2 mm.
FIG. 13. — A-F, Nicholsonella spinigera n in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 13. — A-F, Nicholsonella spinigera n. sp.: A, B, tangential thin section showing autozooecial apertures, mesozooecia, and acanthostyles, holotype CEGH- UNC 27528 c; C, longitudinal thin section showing autozooecial chambers with diaphragms, holotype CEGH-UNC 27528 b; D, E, branch transverse thin section showing autozooecial chambers with diaphragms and mesozooecia, paratype CEGH-UNC 27538 a; F, branch transverse thin section showing autozooecial chambers and acanthostyles in endozone, paratype CEGH-UNC 27538 a; G-I. Arthroclema sp. A: G, H, branch transverse thin section showing autozooecial chambers, CEGH-UNC 27520 d; I, branch oblique thin section, CEGH-UNC 27529 b. Scale bars: A, E, I, 0.5 mm; B, C, F, G, 0.2 mm; D, 1 mm; H, 0.1 mm.
FIG. 14. — A-C in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 14. — A-C, Arthroclema sp. A: A, branch oblique thin section,CEGH-UNC 27530 e; B, C, tangential thin section showing autozooecial apertures and paurostyles, CEGH-UNC 27529 b; D-H, Trigonodictya elegans (Ulrich, 1893): D, E, tangential thin section showing autozooecial apertures, CEGH-UNC 27530 c; F-H, branch transverse thin section showing autozooecial chambers and mesotheca with rods, CEGH-UNC 27542 b. Scale bars: A, B, E, G, 0.5 mm; C, H, 0.2 mm; D, F, 1 mm.
FIG. 18 in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 18. — Cluster diagram (A) and principal coordinate analysis (B) showing similarities between bryozoan faunas (genus level) of different areas during the Sandbian (updated data matrix from Buttler et al. 2013). The cluster analysis has been performed measuring the Jaccard similarity coefficient, using the Unweighted Pair Group Algorithm with Arithmetic Mean (PAST version 1.81, Hammer et al. 2001). The principal coordinate analysis was performed using Jaccard's coefficient for measurement of similarities, the minimal spanning tree is based on an Euclidean distance measure of the original data points. Abbreviations: Lpo, La Pola Formation; LA, Las Aguaditas Formation; LPL, Las Plantas Formation; NA, North America; Bal, Baltica; Bel, Belarus; Sib, Siberia.
FIG. 11. — A in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 11. — A, Tarphophragma macrostoma (Loeblich, 1942), branch transverse thin section, CEGH-UNC 27539 a; B-E, Jordanopora heroensis Ross, 1963: B, C, oblique thin section trough the colony showing autozooecial chambers, CEGH-UNC 27530 f; D, E, tangential thin section showing autozooecial apertures, rare mesozooecia, and tubules in autozooecial walls, CEGH-UNC 27530 e; F, G, Argentinopora robusta n. gen., n. sp., holotype 27511 c, longitudinal section showing autozooecial chambers, mesozooecia, and acanthostyles. Scale bars: A, B, F, G, 1 mm; C, D, 0.5 mm; E, 0.2 mm.
FIG. 12. — A-F. Argentinopora robusta n. gen., n in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 12. — A-F. Argentinopora robusta n. gen., n. sp.: A, B, longitudinal thin section showing autozooecial chambers with a cystiphragm, mesozooecia, acanthostyles, holotype CEGH-UNC 27511 a; C, tangential thin section showing autozooecial apertures, mesozooecia, and acanthostyles, holotype CEGH-UNC 27511 d; D, branch transverse section, paratype CEGH-UNC 27514 b; E, F, tangential thin section showing autozooecial apertures, mesozooecia, and acanthostyles, paratype CEGH-UNC 27514 c; G, H, Nicholsonella spinigera n. sp., branch longitudinal section showing autozooecial chambers with diaphragms, holotype CEGH-UNC 27528 c. Scale bars: A, D, G, 1 mm; B, F, 0.2 mm; C, E, H, 0.5 mm.
FIG. 10. — A-D in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 10. — A-D, Diplotrypa sp. A, CEGH-UNC 27543 a: A, B, longitudinal section showing autozooecial chambers with diaphragms and mesozooecia; C, D, tangential thin section showing autozooecial apertures and mesozooecia; E-G, Tarphophragma macrostoma (Loeblich, 1942), CEGH-UNC 27520 d: E, oblique section through the colony; F, longitudinal section showing autozooecial chambers and mesozooecia; G, tangential thin section showing autozooecial apertures and mesozooecia. Scale bars: A, E, 1 mm; B, C, F, G, 0.5 mm; D, 0.2 mm.
FIG. 9. — A-F, Albardonia bifoliata n. gen., n in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 9. — A-F, Albardonia bifoliata n. gen., n. sp.: A, B, tangential thin section showing autozooecial apertures, mesozooecia, and aktinotostyles, holotype CEGH-UNC 27538 c; C, D, longitudinal section showing autozooecial chambers with diaphragms and mesozooecia, paratype CEGH-UNC 27530 a; E, F, branch transverse thin section showing autozooecial chambers with diaphragms, mesozooecia, and mesotheca, paratype CEGH-UNC 27541 a; G, Diplotrypa sp. A, CEGH-UNC 27543 a, oblique thin section through the colony. Scale bars: A, C, E, 0.5 mm; B, D, 0.2 mm; F, 0.1 mm; G, 2 mm.
FIG. 1 in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 1. — Geologic map of the study area showing the location of the La Pola creek and the fossiliferous locality in the Villicum range, San Juan Province, Argentina.
FIG. 5. — A-E, Xenotrypa argentinensis n in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 5. — A-E, Xenotrypa argentinensis n. sp.: A, longitudinal thin section, showing autozooecia with diaphragms and vesicles, holotype CEGH-UNC 27523 b; B, C, tangential thin section showing autozooecial apertures, acanthostyles, and vesicles, holotype CEGH-UNC 27523 a; D, E, tangential thin section showing autozooecial apertures, acanthostyles, and vesicles, paratype CEGH-UNC 27521 a; F, G, Dianulites rocklandensis Wilson, 1921, longitudinal thin section, CEGH- UNC 27503 c. Scale bars: A, B, E, G, 0.5 mm; C, 0.2 mm; D, F, 1 mm.
FIG. 7. — A-C in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 7. — A-C, Homotrypa subramosa Ulrich, 1886, CEGH-UNC 27537 b: A, B, longitudinal thin section showing autozooecial chambers with cystiphragms; C, tangential thin section showing autozooecial apertures, mesozooecia, and acanthostyles; D-I, Homotrypa vacua McKinney, 1971: D, E, branch longitudinal thin section showing autozooecial chambers with cystiphragms, CEGH-UNC 27545 a; G, H, tangential thin section showing autozooecial apertures, mesozooecia, and acanthostyles, CEGH-UNC 27545 a; I, branch transverse section, CEGH-UNC 27507 b. Scale bars: A, D, E, G, I, 1 mm; B, C, F, H, 0.5 mm.
FIG. 4. — A-E in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 4. — A-E, Lunaferamita virginiensis Utgaard, 1981: A, longitudinal thin section of a colony, CEGH-UNC 27524 a; B, C, longitudinal section of exozone showing autozooecia with diaphragms and vesicles, CEGH-UNC 27513 c; D, tangential thin section showing macula, autozooecial apertures and acanthostyles (arrows), CEGH-UNC 27513 b; F, G, Xenotrypa argentinensis n. sp., longitudinal thin section, holotype CEGH-UNC 27523 b. Scale bars: A, F, 5 mm; B, D, 0.5 mm; C, E, 0.2 mm; G, 1 mm.
FIG. 8. — A-F, Heterotrypa enodis n in A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera
FIG. 8. — A-F, Heterotrypa enodis n. sp.: A-C, branch transverse section showing autozooecial chambers and mesozooecia, holotype CEGH-UNC 27504 b; D, branch longitudinal section showing autozooecial chambers with diaphragms and mesozooecia, CEGH-UNC 27504 a; E, F, tangential thin section showing autozooecial apertures, mesozooecia, and acanthostyles, CEGH-UNC 27504 c; G, H, Albardonia bifoliata n. gen., n. sp., oblique thin section through the bifoliate colony, holotype CEGH-UNC 27538 c. Scale bars: A, B, D, E, G, H, 1 mm; C, F, 0.2 mm.
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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.