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1,663 results for “shells”

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zenodo32/100

FIGURE 2 in Three new species of shell-boring Dipolydora (Annelida: Spionidae: Polydorini) from the South China Sea and the Gulf of Thailand, Vietnam, with comments on the modified spines in posterior notopodia and sperm morphology in polydorins

FIGURE 2. Morphology of Dipolydora echinata sp. nov. A, anterior end, dorsal view. B–H, chaetiger 5 chaetae: B, D, bilimbate companion chaetae; C, E, F, falcate spines in lateral view (C, F) and in rear view (E); G, ventral capillary chaeta; H, dorsal superior geniculate capillary chaeta. I, J, neurochaetae from chaetiger 7: I, inferior winged capillary chaeta; J, bidentate hooded hook. K, L, neurochaetae from a posterior most chaetiger: K, inferior hair-like capillary chaeta; L, bidentate hooded hook. M–O, notochaetae from a posterior most chaetiger: M, partially developed awl-like spine with basal part blunt; N, fully developed awl-like spine with basal part pointed; O, capillary chaeta. P, tetrad of spermatids. Scale bars: A = 100 µm; B–O = 20 µm; P = 5 µm. A–P—MIMB 42701.

opennotspecifiedJul 2022View details →
zenodo32/100

FIGURE 9 in Three new species of shell-boring Dipolydora (Annelida: Spionidae: Polydorini) from the South China Sea and the Gulf of Thailand, Vietnam, with comments on the modified spines in posterior notopodia and sperm morphology in polydorins

FIGURE 9. Morphology and reproduction of Dipolydora spinosa sp. nov. (in life). A, complete female, left lateral view, palps missing. B, anterior end, dorsal view, palps missing. C, a part of a brood laid by female inside its burrow in the shell, showing egg capsules joined in a string and containing trochophores. D, trochophores and abortive eggs from the capsules shown on C. Abbreviations: ab = abortive eggs; mo = mouth. Scale bars: A = 500 µm; B, C = 300 µm; D = 30 µm. A, B—paratype MIMB 42720; C, D—egg capsules deposited by holotype MIMB 42721.

opennotspecifiedJul 2022View details →
zenodo32/100

FIGURE 1 in Three new species of shell-boring Dipolydora (Annelida: Spionidae: Polydorini) from the South China Sea and the Gulf of Thailand, Vietnam, with comments on the modified spines in posterior notopodia and sperm morphology in polydorins

FIGURE 1. Maps showing sampling locations in the Gulf of Thailand and South China Sea (A) and Nha Trang Bay (B).

opennotspecifiedJul 2022View details →
zenodo32/100

FIGURE 4 in Three new species of shell-boring Dipolydora (Annelida: Spionidae: Polydorini) from the South China Sea and the Gulf of Thailand, Vietnam, with comments on the modified spines in posterior notopodia and sperm morphology in polydorins

FIGURE 4. Morphology of Dipolydora spinosa sp. nov. (formalin-fixed 41-chaetiger paratype MIMB 42719 stained with methylene green). A, anterior end, dorsal view. B, chaetigers 10–20, dorsal view, showing remains of larval pigmentation and pattern of MG staining. Abbreviations: ch10, ch20 = chaetigers 10 and 20; dl = dorso-lateral melanophores; do = dorsal paired melanophores; la = lateral melanophores; me = median vesiculate melanophores. Scale bars: A, B = 50 µm.

opennotspecifiedJul 2022View details →
zenodo32/100

FIGURE 13 in Three new species of shell-boring Dipolydora (Annelida: Spionidae: Polydorini) from the South China Sea and the Gulf of Thailand, Vietnam, with comments on the modified spines in posterior notopodia and sperm morphology in polydorins

FIGURE 13. Morphology of Dipolydora vietnamita sp. nov. A–F, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: A–J = 20 µm; K = 5 µm. A–K—MIMB 42724.

opennotspecifiedJul 2022View details →
zenodo32/100

FIGURE 3 in A new freshwater snail genus and species (Gastropoda: Caenogastropoda, Cochliopidae) with extremely spinous shells from sub-recent spring deposits in northeastern Mexico

FIGURE 3. SEM images of Spinopyrgus luismaedai n. gen. et n. sp. (L–P). L. Specimen (UJMC-255) from El Molino spring with strong spines. M. Specimen (UJMC-255) apical view. N. Specimen (UJMC-256), protoconch. O. Specimen (UJMC-255), details of the strong axial elements of the body whorl. P. Specimen (UJMC-256) from Juan Guerra spring, protoconch. Q-T. Pyrgophorus parvulus (Guilding) from Río Sabinas, Coahuila, Mexico (from Czaja et al. 2022, Fig. 5A). Q, R. Specimen (UJMC 460a) from Río Sabinas from both sides. S. Same specimen with details of the spiral elements of the body whorl. T. Same specimen (UJMC 460a), protoconch.

opennotspecifiedAug 2022View details →
zenodo32/100

FIGURE 2. Spinopyrgus luismaedai n. gen. et n in A new freshwater snail genus and species (Gastropoda: Caenogastropoda, Cochliopidae) with extremely spinous shells from sub-recent spring deposits in northeastern Mexico

FIGURE 2. Spinopyrgus luismaedai n. gen. et n. sp. (A–K). A–B. Holotype (UJMC-250) from Juan Guerra spring. C. Paratype 1 (UJMC-251) from Juan Guerra spring. D. Paratype 2 (UJMC-252) from Juan Guerra spring. E, F. Paratype 3 (UJMC-252a) from Juan Guerra spring, specimen with three keels. G. Specimen (UJMC-253) from El Molino spring. H. Specimen (UJMC- 254) from Juan Guerra spring. I. Specimen (UJMC-253) from El Molino spring, protoconch view. J. Paratype 3 (UJMC-251), details of the carina with spines. K. Specimen (UJMC-253b) from El Molino spring, details of the carina with shovel-shaped spines.

opennotspecifiedAug 2022View details →
zenodo32/100

FIGURE 1 in A new freshwater snail genus and species (Gastropoda: Caenogastropoda, Cochliopidae) with extremely spinous shells from sub-recent spring deposits in northeastern Mexico

FIGURE 1. Study area showing the locations of the Viesca springs. The scale bar refers to the map with the springs marked. The topography is illustrated using HillShade in ArcGIS.

opennotspecifiedAug 2022View details →
zenodo32/100

Dataset for Estimating the 3D structure of the Enceladus ice shell from flexural and Crary waves

<p>Data for the publication &quot;Estimating the 3D structure of the Enceladus ice shell from flexural and Crary waves&quot; Includes sac files for 4 different velocity models at two sources. The naming convention is based on the location of the receiver&nbsp;and the component (e.g.) N85100..XDE is North 85 degree, 100 degrees, East component). Each model also has the outputs of the mineos code which provides the surface wave dispersion.&nbsp;</p>

opencc-by-4.0Aug 2022View details →
dryad32/100

Convergent evolution of barnacles and molluscs sheds lights in origin and diversification of calcareous shell and sessile lifestyle

<p><span>The calcareous shell and sessile lifestyle are the representative phenotypes of many molluscs, which happen to be present in barnacles, a group of unique crustaceans. The origin of these phenotypes is unclear, but it may be embodied in the convergent genetics of such distant groups (interphylum). </span><span>Herein, we perform comprehensive comparative genomics analysis in barnacles and molluscs, and reveal a genome-wide strong convergent molecular evolution between them, including coexpansion of biomineralisation and organic matrix genes for shell formation, and origination of lineage-specific orphan genes for settlement. Notably, the expanded biomineralisation gene encoding alkaline phosphatase evolves a novel, highly conserved motif that may trigger the origin of barnacle shell formation. Unlike molluscs, barnacles adopt novel organic matrices and cement proteins for shell formation and settlement, respectively, and their calcareous shells have potentially originated from the cuticle system of crustaceans. Therefore, our study corroborates the idea that selection pressures driving convergent evolution may strongly act in organisms inhabiting similar environments regardless of phylogenetic distance. The convergence signatures shed light on the origin of the shell and sessile lifestyle of barnacles and molluscs. In addition, notable nonconvergence signatures are also present and may contribute to morphological and functional specificities.</span></p>

opencc-zeroAug 2022View details →
zenodo32/100

Figure 17 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 17. Anatomy of Radomaniola nachtigallae sp. nov. A–H, paratypes (UGSB 18857). A, ctenidium and osphradium. B, stomach. C, partial nervous system. D, pallial oviduct. E, bursa copulatrix and seminal receptacles. F, head of male and penis. G, penis. H, prostate gland.

opennotspecifiedFeb 2022View details →
zenodo32/100

Figure 21 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 21. Anatomy of Radomaniola szarowskae sp. nov. A–H, paratypes (UGSB 18566). A, ctenidium and osphradium. B, stomach. C, partial nervous system. D, pallial oviduct. E, bursa copulatrix and seminal receptacles. F, head of male and penis. G, penis. H, prostate gland.

opennotspecifiedFeb 2022View details →
zenodo32/100

Figure 13 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 13. Anatomy of Radomaniola dolens sp. nov. A–H, paratypes (UGSB 16932). A, ctenidium and osphradium. B, stomach. C, partial nervous system. D, pallial oviduct. E, bursa copulatrix and seminal receptacles. F, head of male and penis. G, penis. H, prostate gland.

opennotspecifiedFeb 2022View details →
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Figure 16 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 16. Shells, operculum and radulae of Radomaniola nachtigallae sp. nov. A, B, holotype (MNCN 15.05/200165). C–J, paratypes (UGSB 18857). C, D, shells. E, F, operculum (E, inner side; F, outer side). G, protoconch. H, portion of radula ribbon. I, central radular teeth. J, outer marginal teeth.

opennotspecifiedFeb 2022View details →
zenodo32/100

Figure 24 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 24. Shells, operculum and radulae of Radomaniola wolffi sp. nov. A, B, holotype (MNCN 15.05/200171). C–J, paratypes (UGSB 19533). C, D, shells. E, F, operculum (E, inner side; F, outer side). G, protoconch. H, portion of radula ribbon. I, central radular teeth. J, outer marginal teeth.

opennotspecifiedFeb 2022View details →
zenodo32/100

Figure 19 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 19. Anatomy of Radomaniola pesici sp. nov. A–H, paratypes (UGSB 19048). A, ctenidium and osphradium. B, stomach. C, partial nervous system. D, pallial oviduct. E, bursa copulatrix and seminal receptacles. F, head of male and penis. G, penis. H, prostate gland.

opennotspecifiedFeb 2022View details →
zenodo32/100

Figure 11 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 11. Anatomy of Radomaniola curta maxima subsp. nov. A–H, paratypes (UGSB 19540). A, ctenidium and osphradium. B, stomach. C, partial nervous system. D, pallial oviduct. E, bursa copulatrix and seminal receptacles. F, head of male and penis. G, penis. H, prostate gland.

opennotspecifiedFeb 2022View details →
zenodo32/100

Figure 8 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 8. Shells, operculum and radulae of Radomaniola curta omblensis subsp. nov. A, B, holotype (MNCN 15.05/200155). C–J, paratypes (UGSB 18778). C, D, shells. E, F, operculum (E, inner side; F, outer side). G, protoconch. H, portion of radula ribbon. I, central radular teeth. J, outer marginal teeth.

opennotspecifiedFeb 2022View details →
zenodo32/100

Figure 6 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 6. Shells, operculum and radulae of Radomaniola curta montenegrensis subsp. nov. A, B, holotype (MNCN 15.05/200157). C, paratype (UGSB 19515). D, shell (UGSB 19043). E–J, paratypes (UGSB 19515). E, F, operculum (E, inner side; F, outer side). G, protoconch. H, portion of radula ribbon. I, central radular teeth. J, outer marginal teeth.

opennotspecifiedFeb 2022View details →
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Figure 5 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years

Figure 5. Anatomy of Radomaniola curta meridionalis subsp. nov. A–F, holotype (MNCN 15.05/200152). A, ctenidium and osphradium. B, stomach. C, partial nervous system. D, head of male and penis. E, penis. F, prostate gland.

opennotspecifiedFeb 2022View details →

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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.

allen-brain-atlas
neuroscienceopenDocumentation, web resources, and API references are available online.
Last verified 2026-04-30Open record

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.

abode-home-cage
behavioral-neuroscienceopenThe DataShare record exposes download links for annotations, documentation, license text, and the zipped per-snippet data directory.
Last verified 2026-04-30Open record

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.

dandi-nwb
electrophysiologyopenPublished Dandiset metadata and archive endpoints are available through the production DANDI API.
Last verified 2026-04-30Open record

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.

ibl
behavioral-neuroscienceopenPublic sessions can be searched and loaded from the IBL public data server through ONE.
Last verified 2026-04-29Open record

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.

openneuro
neuroscienceopenPublished datasets are available on demand over the internet.
Last verified 2026-04-29Open record

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