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397 results for “Echinoidea”
FIGURE 2 in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 2. Body plan of an irregular echinoid or sand dollar (Clypeaster rarispinus), showing terminology of various body parts.
FIGURE 10 in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 10. Stereocidaris alcocki (SAMC-A28229): A. Map showing distribution. B. Side view (close-up) of preserved specimen. C. Apical system of preserved specimen.
FIGURE 9 in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 9. Goniocidaris (Goniocidaris) indica: A. Map showing distribution. B. Aboral view of preserved specimen (SAMC- A23089). C. Side view of preserved specimen (SAMC-A28235).
FIGURE 14 in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 14. Acanthocidaris maculicollis (SAMC- A28233). A. Map showing distribution. B. Spine close-up view of preserved specimen.
FIGURE 5 in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 5. Histocidaris elegans (SAMC-A22212): A. Side view of preserved specimen. B. Apical system of preserved specimen.
FIGURE 21 in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 21. Tromikosoma uranus (SAMC-A22122). A. Map showing distribution. B. view of preserved specimen. C. Oral view of preserved specimen.
FIGURE 8 in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 8. Phyllacanthus imperialis (SAMC-A23447): A. Map showing distribution. B. Aboral view of preserved specimen.
FIGURE 12 in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 12. Stereocidaris excavata (SAMC-A23320). A. Map showing distribution. B. Side view of preserved specimen. C. Close-up apical system of preserved specimen.
FIGURE 4 in Late Cretaceous species of Vologesia (Echinoidea, Cassiduloida) from northern Spain
FIGURE 4. Vologesia rollingstones sp. nov.; A, holotype, MB.E.6224, detail of apical area; B, paratype, MB.E.6225, detail of peristomial area; both from Langre, Cantabria, northern Spain, Sponge Rhythmites (Scaphites hippocrepis III Zone, lower Campanian). Both specimens coated with ammonium chloride prior to photography. Scale bars equal 5 mm.
FIGURE 7 in Late Cretaceous species of Vologesia (Echinoidea, Cassiduloida) from northern Spain
FIGURE 7. Vologesia toucasi (Lambert, 1911); MB.E.11643, Langre, Cantabria, northern Spain, Bed 200, upper Santonian (Placenticeras polyopsis Zone) in oral (A), apical (B) and lateral views; D: detail of peristomial area. The specimen was coated with ammonium chloride prior to photography. Scale bars equal 10 mm (A–C) and 5 mm (D).
FIGURE 6 in Late Cretaceous species of Vologesia (Echinoidea, Cassiduloida) from northern Spain
FIGURE 6. Bivariate scatter plots for morphometric data of Vologesia rollingstones sp. nov. and Vologesia toucasi (Lambert, 1911).
FIGURE 5 in Late Cretaceous species of Vologesia (Echinoidea, Cassiduloida) from northern Spain
FIGURE 5. Drawings of plating style; A–B, D, F, Vologesia rollingstones sp. nov.; A, D, MB.E.6226, A: oral view, D: detail of peristomial area; B, holotype, MB.E.6224, apical view; F, MB.E.6227, apical disc; A–B, D, F: Langre, Cantabria, northern Spain, Sponge Rhythmites (Scaphites hippocrepis III Zone, lower Campanian); C, E, G, Vologesia toucasi (Lambert, 1911); C, MB.E.11644, C: oral view, E: detail of peristomial area; G, MB.E.11645, apical disc; C, E, G: Langre, Cantabria, northern Spain, Bed 200, upper Santonian (Placenticeras polyopsis Zone). Scale bars equal 10 mm (A–C) and 2 mm (D–G).
FIGURE 3 in Late Cretaceous species of Vologesia (Echinoidea, Cassiduloida) from northern Spain
FIGURE 3. Vologesia rollingstones sp. nov.; A–C, holotype, MB.E.6224; B, paratype, MB.E.6225; in oral (A, D), apical (B, E) and left lateral (C, F) views. Langre, Cantabria, northern Spain, Sponge Rhythmites (Scaphites hippocrepis III Zone, lower Campanian). Both specimens coated with ammonium chloride prior to photography. Scale bar equals 10 mm.
FIGURE 5. A–G in Taxonomic reassessment of Tetrapygus niger (Arbacioida, Echinoidea): molecular and morphological evidence support its placement in Arbacia
FIGURE 5. A–G, SEM photographs of pedicellariae and stalk of Arbacia nigra; A, aboral ophicephalous pedicellaria; B, oral ophicephalous pedicellaria; C, triphyllous pedicellaria; D, tridactylous pedicellaria; E, distal end of ophicephalous pedicellaria stalk; F–G, maginifications; F, aboral ophicephalous pedicellaria; G, tridentate pedicellaria. Scale bars: A–E, 100 µm; F–G: scale bars equal 50 µm.
FIGURE 3 in Taxonomic reassessment of Tetrapygus niger (Arbacioida, Echinoidea): molecular and morphological evidence support its placement in Arbacia
FIGURE 3. Denuded test of Arbacia nigra from Las Cruces (A–F; Chile) and Concepción (G; Chile). A–B, specimen TN_ 35LC: A, aboral view; B, oral view. C–F, specimen TN_9LC; C, aboral view; D, oral view; E–F, lateral views; G, apical system of specimen TN_2CO. Scale bars equal 10 mm.
FIGURE 2. Relationships among some Arbaciidae. A in Taxonomic reassessment of Tetrapygus niger (Arbacioida, Echinoidea): molecular and morphological evidence support its placement in Arbacia
FIGURE 2. Relationships among some Arbaciidae. A, BI (Bayesian Inference) tree of COI sequences; B, BI tree of 28S sequences. Values under each node respectively correspond to BI posterior probabilities below 1.
FIGURE 1. A–B in Taxonomic reassessment of Tetrapygus niger (Arbacioida, Echinoidea): molecular and morphological evidence support its placement in Arbacia
FIGURE 1. A–B, Tetrapygus niger; C–D, Arbacia spatuligera; E–F, Arbacia dufresnii; G, Distribution of studied Arbaciidae and sampling sites. Scale bar equals 10 mm.
FIGURE 6 in Taxonomic reassessment of Tetrapygus niger (Arbacioida, Echinoidea): molecular and morphological evidence support its placement in Arbacia
FIGURE 6. Spines of Arbacia nigra specimen TN_36PA; A–B, adapical spine; A, lateral view; B, adoral view; C–E, oral spine; C, complete oral spine; D, zoom on the proximal part; E, zoom on the distal part. Scale bars equal 500 µm.
FIGURE 4 in Taxonomic reassessment of Tetrapygus niger (Arbacioida, Echinoidea): molecular and morphological evidence support its placement in Arbacia
FIGURE 4. Arbacia nigra, details of test plating. A–B, apical system: A, small specimen (TD = 28 mm); B, large specimen (TD = 70 mm); C, aboral plates of ambulacrum; D–E, aboral plates of interambulacrum: D, small specimen (TD = 29 mm); E, large specimen (TD = 70 mm). Scale bars equal 10 mm.
FIGURE 2 in Needle in a haystack-genetic evidence confirms the expansion of the alien echinoid Diadema setosum (Echinoidea: Diadematidae) to the Mediterranean coast of Israel
FIGURE 2 Phylogenetic relationships of the genus Diadema. Superimposed Maximum Likelihood and Bayesian Inference phylogenetic trees based on COI sequences representing all extant species of Diadema, rooted by Astropyga radiata. Major clades were collapsed. The clades including Mediterranean Diadema sequences are highlighted in yellow (D. setosum clade b). Supporting values (> 0.9 posterior probabilities and> 70% ML bootstrap values) are shown above the nodes (before and after the slash, respectively). ML bootstrap support was calculated from 1000 replications and BI posterior probabilities from 7.5 million generations (after burn-in). GenBank accession numbers of the corresponding sequences used in the analysis are given in Supplementary materials Tab. S2.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.
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.