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397 results for “Echinoidea”
FIGURE 4 in Late Cretaceous phymosomatids and the true identity of Cidarites granulosus Goldfuss, 1829 (Echinoidea, Phymosomatoida)
FIGURE 4. Phymosoma ravni sp. nov.; A, GZG.STR.018629, lower Maastrichtian, Promoisel Quarry, Rügen, Germany, test with spines. Phymosoma granulosum (Goldfuss, 1829); B, GZG.STR.018585, lower Maastrichtian, Wittenfelde Quarry, Rügen, Germany, accumulation of spines; C, D, MB.E 6867, lower Maastrichtian (Trigonosemus pulchellus Zone), Promoisel Quarry, Rügen, Germany, lower third of spine and spine in cross-section, respectively. All specimens coated with ammonium chloride prior to photography; natural size (B), x 1.2 (A), x 2 (C) and x 3 (D).
FIGURE 6. Abertella miskellyi n in A new late Cenozoic species of Abertella (Echinoidea: Clypeasteroida) from Patagonia
FIGURE 6. Abertella miskellyi n. sp., Holotype MB E.7463. A: apical disc; B: peristome; C: poriferous zone of petal III; D: periproct; E: distal end of food grooves in ambulacrum I; F: tuberculation and surface structure in interambulacrum 3. Scale bars equal 10 mm. In B, D and F specimen whitened with ammonium chloride.
FIGURE 5. Abertella miskellyi n in A new late Cenozoic species of Abertella (Echinoidea: Clypeasteroida) from Patagonia
FIGURE 5. Abertella miskellyi n. sp. Plate architecture of the basicoronal circle of (A) the holotype (MB E.7463) and (B) the paratype (MB E.7462). Interambulacra shaded; food grooves (not visible in the paratype) stippled.
FIGURE 3. Abertella miskellyi n in A new late Cenozoic species of Abertella (Echinoidea: Clypeasteroida) from Patagonia
FIGURE 3. Abertella miskellyi n. sp., Paratype MB E.7462. A: plate architecture of the aboral surface; B: plate architecture of the oral surface. Interambulacra shaded.
FIGURE 1 in A new late Cenozoic species of Abertella (Echinoidea: Clypeasteroida) from Patagonia
FIGURE 1. Geographical locations (black circles) of localities with Abertella in the Cenozoic of Patagonia. Location of the main Cenozoic basins modified from del Río (2004).
FIGURE 4. Abertella miskellyi n in A new late Cenozoic species of Abertella (Echinoidea: Clypeasteroida) from Patagonia
FIGURE 4. Abertella miskellyi n. sp., Holotype MB E.7463. Detail of the plate architecture at the tip of petal IV. Interambulacra shaded.
FIGURE 2. Abertella miskellyi n in A new late Cenozoic species of Abertella (Echinoidea: Clypeasteroida) from Patagonia
FIGURE 2. Abertella miskellyi n. sp. A–C: Holotype MB E.7463; D–F: Paratype MB E.7462. A, D: aboral views; B, E: oral views; C, F: right lateral views. Specimens whitened with ammonium chloride.
FIGURE 12 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 12. Partial phylogeny of Diadema using the concatenated ATPase-6 and ATPase-8 data of unique haplotypes, reconstructed with MRBAYES. Clade credibility values (BI/ML)>85% shown (clades with <85% collapsed), scale bar reflects changes per site.
FIGURE 11 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 11. Partial phylogeny of Diadema using COI data of unique haplotypes, reconstructed with MRBAYES. Clade credibility values (BI/ML)>85% shown (clades with <85% collapsed), scale bar reflects changes per site.
FIGURE 8 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 8. NHMTFMCBMEQ/00233, paratype of Diadema africanum. Ambulacral spines (A–G): A–C, proximal, medium and distal parts of an ambulacral spine respectively; D, entire ambulacral spine; E–G, proximal, medium and distal ambulacral spine transverse sections respectively. Interambulacral spines (H–L): H–J, proximal, medium and distal parts of an interambulacral spine respectively; K, entire interambulacral spine; L–N, proximal, medium and distal interambulacral spine transverse sections respectively.
FIGURE 9 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 9. Pedicellariae: A–B, tridentate pedicellariae; C–I, scanning electron microscopy images (SEMs) of tridentate pedicellariae; C, a tridentate pedicellaria; D–E, individual valves of a tridentate pedicellaria (side view); F–H, individual valves of tridentate pedicellariae (internal views); I, peripheral teeth on the blade of a tridentate pedicellaria; J–K, triphyllous pedicellariae; L–N, SEM images of triphyllous pedicellariae; L, triphyllous pedicellaria; M, internal view of a triphyllous pedicellaria and N, close-up of peripheral teeth.
FIGURE 7 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 7. NHMTFMCBMEQ/00233, paratype of Diadema africanum. Apical system and pattern of iridophores: A, genital plate, gonopore and an ambulacrum; B, close-up of the apical system (paratype), C & D, pattern of iridophores around the apical system on a living specimen in daylight; E, pattern of iridophores at night; F, pattern of iridophore on a living specimen in daylight.
FIGURE 6 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 6. NHMTFMCBMEQ/00233, paratype of Diadema africanum: A, aboral view; B, oral view; C, lateral view centered on ambulacrum V; D, lateral view centered on interambulacrum V; E, oral view showing auricle. F, auricle.
FIGURE 5 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 5. NHMTFMCBMEQ/00232, holotype of Diadema africanum: A, aboral view; B, oral view; C, lateral view.
FIGURE 3 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 3. NHMTFMCBMEQ/00237 neotype of D. antillarum. Ambulacral spines (A–G): A–C, proximal, medium and distal parts of an ambulacral spine respectively; D, entire ambulacral spine; E–G, proximal, medium and distal ambulacral spine transverse sections respectively. Interambulacral spines (H–N): H–J, proximal, medium and distal parts of an interambulacral spine respectively; K, entire interambulacral spine; L–N, proximal, medium and distal interambulacral spine transverse sections respectively.
FIGURE 1 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 1. NHMTFMCBMEQ/00237, neotype of D. antillarum: A, aboral view; B, oral view; C, lateral view.
FIGURE 4 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 4. Scanning electron microscopy images (SEMs) of individual valves of tridentate pedicellariae and triphyllous pedicellariae of the neotype of D. antillarum NHMTFMCBMEQ/00237: A–H, tridentate pedicellariae; A–B, external and internal views of a broad form; C–D, side views of a broad form; E–F, narrow form (external views); G, internal view of a narrow form; H, side view of a narrow form; I, details of a narrow tridentate pedicellaria showing lateral teeth; J–K, Triphyllous pedicellariae, internal and external views respectively; L, details of a triphyllous pedicellaria showing peripheral teeth.
FIGURE 2 in A new species of Diadema (Echinodermata: Echinoidea: Diadematidae) from the eastern Atlantic Ocean and a neotype designation of Diadema antillarum (Philippi, 1845)
FIGURE 2. NHMTFMCBMEQ/00237, neotype of D. antillarum: A, aboral view; B, oral view; C, lateral view centered on ambulacrum V; D, lateral view centered on interambulacrum V; E, oral view showing auricle; F, apical system.
FIGURE 5 in A new genus of mellitid sand dollar (Echinoidea: Mellitidae) from the eastern Pacific coast of the Americas
FIGURE 5. Growth series or size dependent grade in structures of bidentate pedicellariae in M. notabilis.
FIGURE 4 in A new genus of mellitid sand dollar (Echinoidea: Mellitidae) from the eastern Pacific coast of the Americas
FIGURE 4. Bidentate pedicellariae (A–F, i jaw-set, ii internal view of valve, iii side view of valve), biphyllous pedicellariae (G–H, i jaw-set, ii internal view of valve, iii side view of valve) and spines (I–O, i aboral club-shaped spine front view, ii side view, iii interambulacral margin spine, iii front view, iv side view) from: A, G & I, M. quinquiesperforata; B & J, M. tenuis; C & K, M. notabilis (high wave-energy ecophenotype); D & L, M. notabilis (low wave-energy ecophenotype); E, H & M, L. longifissa; N, L. grantii (high wave-energy ecophenotype), F & O, L. grantii (low wave-energy ecophenotype).
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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.