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1,663 results for “shells”

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FIGURE 1 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses

FIGURE 1: Phylogenetic tree based on an analysis of the entire data set (H3, COI, 16S, and 18S sequences) of all specimens listed in Table 2. The phylogenetic model (GTR+I+G) was estimated by MrModeltest (Nylander 2004) performed with Paup*4.0b10 (Swofford 2003). Protein coding data sets were coded as "CODON". Based on different base compositions (chi-square test) in each of the single data sets, all parameters were defined as unlinked. Paup*4.0b10 tree characteristics: RI=0.851, CI=0.579. 325 positions were parsimony-informative, 76 were parsimony-uninformative, and 1141 were constant (1542 bp). Tonna cerevisina (Hedley, 1919) and Cypraea annulus (Linnaeus, 1758) were used as outgroup.

opennotspecifiedDec 2008View details →
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FIGURE 5 in The Naticidae (Mollusca: Gastropoda) of Giglio Island (Tuscany, Italy): Shell characters, live animals, and a molecular analysis of egg masses

FIGURE 5: A, Sparsely dotted form of Naticarius stercusmuscarum (Gmelin, 1791); B, Naticarius stercusmuscarum (Gmelin, 1791). All specimens are shown in four standardized views (dorsal, apertural, apical, umbilical) as well as alive. The pictures of living specimens were taken in an aquarium with a black bottom. Scale bars represent 0.5 cm.

opennotspecifiedDec 2008View details →
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FIGURES 25–29. Dilemma frumarkernorum. Shell hinge and ligament. 25–28. Paratype 2. 25 in A remarkable new genus of carnivorous, sessile bivalves (Mollusca: Anomalodesmata: Poromyidae) with descriptions of two new species

FIGURES 25–29. Dilemma frumarkernorum. Shell hinge and ligament. 25–28. Paratype 2. 25. Internal views of shell, SEM. Left valve on left side. 26. Hinge in posteroventral view, SEM. 27. Same view, optical photography. 28. Detail of right valve showing ligament. 29. Paratype 1. Attached valves in ventro-lateral view showing hinge with interlocking teeth and sockets. Scale bars: Figures 25–27, 29 = 2 mm; Figure 28 = 1 mm.

opennotspecifiedDec 2008View details →
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FIGURE 2. Claws II in Determinants and taxonomic consequences of extreme egg shell variability in Ramazzottius subanomalus (Biserov, 1985) (Tardigrada)

FIGURE 2. Claws II of similar size females exhibiting haplotype 1 (A) or haplotype 2 (B) as seen in PCM. Minor differences were found between the two haplotypes in morphometry of the internal claws, with haplotype 1 females having slightly smaller claws in relation to the buccal tube length (see Tables 1–2 statistics and Figure 4A for a graphic illustration of the differences in claw dimensions). Scale bar in micrometres.

opennotspecifiedDec 2016View details →
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FIGURE 3 in Determinants and taxonomic consequences of extreme egg shell variability in Ramazzottius subanomalus (Biserov, 1985) (Tardigrada)

FIGURE 3. Chorions of eggs laid by females exhibiting haplotype 1 (A-F) or haplotype 2 (G-L) as seen in PCM and SEM. Highly significant differences were found between the two haplotypes in all measured morphometric eggs traits (see Table 3 for statistics and Figure 4B for a graphic illustration). In general, haplotype 1 eggs were larger and exhibited longer, thinner and more numerous processes than haplotype 2 eggs. Note, however, also the considerable variation within the haplotypes (see Table 3 and Figure 4B for statistics). Scale bars in micrometres, scale for all PCM photomicrographs same as on the photomicrograph A.

opennotspecifiedDec 2016View details →
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FIGURE 1 in Determinants and taxonomic consequences of extreme egg shell variability in Ramazzottius subanomalus (Biserov, 1985) (Tardigrada)

FIGURE 1. Graphic illustration of the experimental design: A—protocol that allows a permanent preservation of eggs but not of adult females; B—protocol that allows a permanent preservation of adult females and empty chorions but not of entire eggs (if only a single egg is laid).

opennotspecifiedDec 2016View details →
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FIGURES 46–54. Shells. Figs. 46–48 in New land mollusk fauna from Serra da Capivara, Piauí, Brazil, with a new genus and five new species (Gastropoda: Orthalicoidea, Streptaxidae, Subulinidae)

FIGURES 46–54. Shells. Figs. 46–48: Streptartemon molaris n. sp.; Fig. 46, paratype MZSP 111843 (W 7.6 mm), apertural view; Fig. 47, same, detail of aperture in slightly inferior view; Fig. 48, paratype MZSP 112366, young specimen (W 6.1 mm), apertural view; Fig. 49, Lamellaxis cf. gracilis, MZSP 112406, apertural view (L 7.1 mm); Fig. 50, same species, MZSP 112354, apertural view (L 8.6 mm); Figs. 50–54, Beckianum beckianum; Fig. 51, MZSP 112411 (L 6.5 mm), apertural view; Fig. 52, same, right view; Fig. 53, same, dorsal view; Fig. 54, MZSP 111542 (L 4.8 mm), apertural view; Fig. 55, dorsal view.

opennotspecifiedDec 2013View details →
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FIGURES 35–45. Type shells. Figs. 42–45, Anctus prolatus n in New land mollusk fauna from Serra da Capivara, Piauí, Brazil, with a new genus and five new species (Gastropoda: Orthalicoidea, Streptaxidae, Subulinidae)

FIGURES 35–45. Type shells. Figs. 42–45, Anctus prolatus n. sp. holotype MZSP 112450 (L 25.2 mm); Fig. 35, frontal view; Fig. 36, same, right view; Fig. 37, same, dorsal view; Fig. 38, same, anterior view; Fig. 39, same, apical view; Fig. 40, paratype MZSP 111826 (L 24.1 mm), apertural view; Fig. 41, same, slightly left view; Figs. 42–45, Streptartemon molaris n. sp. shell of holotype MZSP 112451 (W 8.7 mm); Fig. 42, inferior view; Fig. 43, apical view; Fig. 44, apertural view; Fig. 45, same, detail of aperture.

opennotspecifiedDec 2013View details →
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FIGURES 16–23. Type shells. Figs. 16–22 in New land mollusk fauna from Serra da Capivara, Piauí, Brazil, with a new genus and five new species (Gastropoda: Orthalicoidea, Streptaxidae, Subulinidae)

FIGURES 16–23. Type shells. Figs. 16–22: Cyclodontina capivara n. sp. shell of types; Fig. 16, holotype MZSP 112448, apertural view (L 19.2 mm); Fig. 17, same, right view; Fig. 18, same, dorsal view; Fig. 19, paratype MZSP 111845–1, apertural view (L 20.4 mm); Fig. 30, same, #2 (L 17.0 mm); Fig. 21, paratype MZSP 111837, young specimen, apertural view (L 6.5 mm); Fig. 22, same, detail of apex in profile (W 2.0 mm); Fig. 23, Rhinus gilbertus n. sp., holotype, detail of apex in profile (W 1.5 mm).

opennotspecifiedDec 2013View details →
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Fig. 11 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes

Fig. 11. Shape PCA performed exclusively on barcoded Quadrulella cell morphology based on the test length (L), breadth (B), L/B ratio and the size of plates [min./max. values and surface of nine plates (µm2)]. The shape PCA was performed according to the MRA method (Baur and Leuenberger, 2011). Q. madibai can be discriminated based on its very small B/L ratio and its high aperture/B ratio (cf. Table 4), although it is not visible on the PCA.

opennotspecifiedDec 2016View details →
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Fig. 12. Morphological comparison between Quadrulella symmetrica s.s. and Q in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes

Fig. 12. Morphological comparison between Quadrulella symmetrica s.s. and Q. cf. symmetrica cells using MRA method. The shape PCA was performed using the same parameters as in Fig. 11.

opennotspecifiedDec 2016View details →
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Fig. 1 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes

Fig. 1. Schematic demonstration of measured axes of the test: (1) length, (2) breadth, (3) width of aperture (pseudostome) and (4) width of the shell plates (scales).

opennotspecifiedDec 2016View details →
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FIGURE 4. Nanaphora verbernei comb. nov. A–C. MNRJ 18756. A. Shell from Brazil, 3.29 in Five new species and two records of Triphorinae (Caenogastropoda, Triphoridae) from Brazil

FIGURE 4. Nanaphora verbernei comb. nov. A–C. MNRJ 18756. A. Shell from Brazil, 3.29 mm long. B. Idem, 3.40 mm long. C. Idem, 3.25 mm long. D. Idem, MZSP 85022, 3.20 mm long. E, G, same shell as D. F, H–J, same shell as A. Scale bars: A–D, F, 1 mm; E, G, 500 µm; H, J, 100 µm; I, 50 µm.

opennotspecifiedDec 2015View details →
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FIGURE 1. Terminology used for shell descriptions. A. Entire shell. B–C in Five new species and two records of Triphorinae (Caenogastropoda, Triphoridae) from Brazil

FIGURE 1. Terminology used for shell descriptions. A. Entire shell. B–C. Abapical portion of the shell. D–F. Protoconch. G. Protoconch, adapical view (procedure for counting whorls). H–K. Most common embryonic shell sculptures in Triphorinae, with rounded granules (H), reticulate pattern (I), arrowhead-shaped granules/cruciform tubercles (J) or axial vesicles (K). Abbreviations: (abc) abapical spiral cord, (ac) anterior canal, (adc) adapical spiral cord, (ap) aperture, (bc) basal cords, (es) embryonic shell, (ls) larval shell, (mc) median spiral cord, (pc) posterior canal, (pl) protoconch length, (pw) protoconch width, (sc) sutural cord, (sl) shell length, (snc) supranumerical cords, (spc) subperipheral cord, (sw) shell width.

opennotspecifiedDec 2015View details →
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FIGURE 1. Parvanachis shells. B–D and F–G in Taxonomic revision of the species of Parvanachis Radwin, 1968 (Gastropoda: Columbellidae) from the Gulf of Panama

FIGURE 1. Parvanachis shells. B–D and F–G are preserved specimens, so dark areas on the body whorls of the shells are the coloring of the preserved animal visible through the shell. Scale bar = 1 mm. A. Parvanachis obesa, SBMNH 56943. B. Parvanachis diminuta, USNM 1231301, Isla Venado. C. Parvanachis dichroma, holotype, USNM 1231302, Chumical. D. Parvanachis dichroma, paratype, USNM 1231303, Chumical. E. Anachis albonodosa, paratype, USNM 716233, Mazatlan. F. Parvanachis minibrunnea, holotype, USNM 1231307, Isla Venado. G. Parvanachis minibrunnea, paratype, USNM 1231308, Isla Venado.

opennotspecifiedDec 2014View details →
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Fig. 10 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes

Fig. 10. Morphological comparison of Gibbocarina galeata comb. nov. (previously Nebela galeata) and Mrabella subcarinata gen. nov., comb. nov. (previously Quadrulella subcarinata). (a) line drawing of Gibbocarina galeata from Congo by Gauthier-Lièvre (1957). (b and c) scanning and light micrographs of M. subcarinata from South Africa. Scale bars = 50 µm (a) and 20 µm (b).

opennotspecifiedDec 2016View details →
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Fig. 3 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes

Fig. 3. Light micrographs of barcoded Quadrulella symmetrica s.s. cells: (a) cell Q-75; (b) cell Q-83; (c) cell Q-81; (d) cell Q-90; (e) cell Q-63; (f) cell Q-73; (g) cell Q-51; (h) cell Q-102; (i) cell Q-100; (j) cell Q-95; (k) cell Q-82; (l) cell Q-51. Scale bars = 10 µm.

opennotspecifiedDec 2016View details →
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Fig. 4 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes

Fig. 4. Light micrographs of two Quadrulella madibai sp. nov. barcoded cells: (a) cell Q-11; (b) cell Q-9. Scale bars = 10 µm.

opennotspecifiedDec 2016View details →
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Fig. 7 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes

Fig. 7. Light micrographs of three barcoded Mrabella subcarinata cells (previously known as Quadrulella subcarinata): (a) cell Q-1; (b) cell Q-2; (c) cell Q- 16. Scale bars = 20 µm (in a and b) and 50 µm (in c).

opennotspecifiedDec 2016View details →
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Fig. 6 in Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes

Fig. 6. Light micrographs of barcoded Quadrulella alata cells: (a) cell Q-8; (b) cell Q-7; (c) cell Q-17; (d) cell Q-15. Scale bars = 20 µm (in a and b) and 50 µm (in c and d).

opennotspecifiedDec 2016View details →

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DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.

dandi-nwb
electrophysiologyopenPublished Dandiset metadata and archive endpoints are available through the production DANDI API.
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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.

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behavioral-neuroscienceopenPublic sessions can be searched and loaded from the IBL public data server through ONE.
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OpenNeuro

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