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2,356 results for “Echinodermata”
Figure 3 in Taxonomy of the heavily exploited Indo-Pacific sandfish complex (Echinodermata: Holothuriidae)
Figure 3. Holothuria (Metriatyla) lessoni sp. nov., holotype. A, calcareous ring (R, radial plate; IR, interradial plate); B, buttons of dorsal body wall; C, tables of dorsal body wall; D, large table of dorsal body wall; E, tables of ventral tube feet; F, buttons of ventral tube feet; G, perforated plates of ventral tube feet. Scale bars: A = 5 mm; B–G = 50 Mm.
Figure 3 in The oldest cinctan carpoid (stem-group Echinodermata), and the evolution of the water vascular system
Figure 3. Protocinctus mansillaensis gen. et sp. nov. reconstruction. A, C, dorsal view. B, ventral view. D, E, frontal views. Abbreviations: asi, articulation with the supracentral integument; asp, articulation with the supraoral plate; divi, depression in the interior ventral integument; evi, exterior of ventral integument; im, interior of the marginal plates; ip, intercalated plate; ivi, interior of the ventral integument; M0–5, marginal plates 0–5 (l, left and r, right); P, porta; sof, suropercular facets.
Figure 2 in The oldest cinctan carpoid (stem-group Echinodermata), and the evolution of the water vascular system
Figure 2. Stratigraphic section of the Mesones Group in Purujosa village (type horizon marked by a schematic diagram of Protocinctus mansillaensis gen. et sp. nov.). Abbreviations: Caesar, Caesaraugustian; VD., Valdemiedes Formation.
Figure 5 in The oldest cinctan carpoid (stem-group Echinodermata), and the evolution of the water vascular system
Figure 5. Schematic diagram comparing the number/ symmetry of anterior food grooves in cinctans and a ctenocystoid. M and m indicate the positions of marginal plates and the mouth, respectively.
Figure 4 in The oldest cinctan carpoid (stem-group Echinodermata), and the evolution of the water vascular system
Figure 4. Protocinctus mansillaensis gen. et sp. nov. A–G, J, holotype, MPZ2004/170. G, MPZ2004/172. H, MPZ2007/2477. A–H, 'virtual' reconstructions; I, latex cast from an artificial mould of MPZ2007/2477, cast whitened with ammonium chloride sublimate. J, holotype specimen in matrix. A, B, dorsal and ventral stereo-pairs, ¥3.6. C, D, Anterior stereo-pairs, without the?supraoral plate, with and without the labrum, ¥7.2. E, F, left and right lateral views, ¥3.3. G, posterolateral stereo-pair, ¥3.4. H, anterior region, dorsal stereo-pair, ¥5.0. I, anterior region, dorsal view, ¥4.6. J, posterior region of the cinctus, ventral view, ¥9.0. Abbreviations: am, abnormal marginal plate; asi, articulation with supracentral integument; asp, articulation with supraoral plate; divi, depression in the interior ventral integument; evi, exterior of the ventral integument; ip, intercalated plate; ivi, interior of the ventral integument; L1–3, lintel plates 1–3; La, labrum; Li, lintel (undifferentiated); M0–5, marginal plates 0–5 (l, left and r, right); Mg, marginal groove; Mo, mouth; Op, operculum; P, porta; Sp, sphenoids; ss, sediment surface; St, stele; Su, supraoral plate.
Figure 6 in The taxonomic status of some Atlanto-Mediterranean species in the subgenus Holothuria (Echinodermata: Holothuroidea: Holothuriidae) based on molecular evidence
Figure 6. Tentacle rods of six specimens from Holothuria mammata – clade 1 (A, B) and Holothuria tubulosa – clade 2 (C, D, E, F). Scale bars = 100 Mm (A–F). The number on the upper left-hand side of each image represents the individual number in accordance with Table 1.
Figure 5 in The taxonomic status of some Atlanto-Mediterranean species in the subgenus Holothuria (Echinodermata: Holothuroidea: Holothuriidae) based on molecular evidence
Figure 5. Main variables selected by the stepwise discriminant function analysis to distinguish clade 1 – Holothuria mammata (upper box, dark grey colour), clade 2 – Holothuria tubulosa (middle box, clear grey colour), and clade 3 – Holothuria dakarensis (bottom box, white colour). A–F, variables that characterize function 1. G–H, variables that characterize function 2. The centre lines of the boxes mark the median value, the hinges the lower and upper quartiles, respectively, and the whiskers the range of data between values smaller/greater than the lower/upper quartile minus/plus 1.5 times the interquartile range; asterisks represent outliers (data values outside of this range); and squares represent unusually small or large values outside of the outer fences.
Figure 1 in The taxonomic status of some Atlanto-Mediterranean species in the subgenus Holothuria (Echinodermata: Holothuroidea: Holothuriidae) based on molecular evidence
Figure 1. Collection localities: Mediterranean Sea: T, Tunisia; P, Cabo de Palos; U, Aguilas. Atlantic Ocean: C, Canary Islands; A, Algarve; Z, Azores Islands; V, Cape Verde Islands, G, Gulf of Mexico.
Figure 2. A in The taxonomic status of some Atlanto-Mediterranean species in the subgenus Holothuria (Echinodermata: Holothuroidea: Holothuriidae) based on molecular evidence
Figure 2. A, maximum parsimony (MP) tree obtained from 16S mtDNA sequences (215 steps; consistency index = 0.856, retention index = 0.896, homoplasy index = 0.144), numbers on branches represent per cent bootstrap support values of 1000 replicates from MP/neighbour-joining analyses. B, optimal maximum likelihood tree obtained from 16S mtDNA sequences (–ln likelihood = 1493.80208), numbers on branches represent per cent bootstrap support values of 500 replicates. In both figure parts, labels of operational taxonomic units indicate the preliminary species identified (m, Holothuria mammata; t, Holothuria tubulosa; st, Holothuria stellati; d, Holothuria dakarensis) and the locality. After these, the clade (1–3) and the name of the species are provided.
Figure 17. Ophiocomina nigra postlarval development. A, B, two 0.7 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 17. Ophiocomina nigra postlarval development. A, B, two 0.7 mm dd postlarva dorsal, note that only one has secondary inter-radial plates (SIR); C, 0.7 mm dd postlarva ventral; D, E, 0.9 mm dd postlarvae; D, dorsal; E, ventral; F–H, 1.4 mm dd postlarvae; F, dorsal; G, arm dorsal; H, ventral; I–K, 1.6 mm dd postlarva; I, jaw, note the scale-like adoral shield spine (ASS) and the second smaller scale proximal to it; J, arm spines, note the serrated edges; K, disc granules are strongly rugose; L, 2.4 mm juvenile; M, 3 mm dd juvenile. Abbreviations: as in Figs 1–3, 10. Scale bars in millimetres.
Figure 16. Ophiothrix fragilis postlarval development. A–C, 0.34 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 16. Ophiothrix fragilis postlarval development. A–C, 0.34 mm dd postlarvae; A, on arm of adult; B, dorsal, note the large central plate (CPP); C, ventral, note the tricuspid tooth; D–G, 0.55 mm dd postlarvae; D, arm dorsal, note the small terminal plate (TP) and large hooks; F, arm lateral; G, ventral; H, I, 0.8 mm dd postlarvae; H, dorsal, radial shields (RS) and inter-radial plates (IR1, 2) have formed; I, ventral; J, K, 1.1 mm postlarvae; J, dorsal, note the k-plate; K, ventral, note the first tooth papillae (TPa); L–N, 1.3 mm postlarvae; L, dorsal with numerous disc spines; M, ventral with additional TPa; N, arm dorsal, note the serrated shape of the proximal dorsal spines. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres. Some dorsal plates have fallen off due to the bleaching process (H, J).
Figure 13. Amphiura filiformis postlarval development. A, B, 0.35 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 13. Amphiura filiformis postlarval development. A, B, 0.35 mm dd postlarvae; A, dorsal, note the solid plate stereom; B, ventral; C, D, 0.5 mm dd postlarva; C, dorsal, note the multilayered plate margins; D, ventral; E, F, 0.6 mm dd postlarva; E, dorsal; F, ventral, note the infradental papillae (IP = MP1); G, 1 mm dd postlarva arm ventral, note the serrated middle arm spine; H, I, 1.3 mm dd postlarva; H, dorsal; I, ventral; J, K, 1.6 mm dd postlarva; J, dorsal; K, ventral; L, 5 mm dd adult. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.
Figure 6 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 6. Ophiomitrella clavigera postlarval development, specimens taken from brooding adult are termed embryo, freeliving stages postlarvae. A–C, 0.6 mm dd embryo; A, dorsal; B, arm ventral; C, jaws; D, 1 mm dd embryo dorsal; E, 1.3 mm dd embryo ventral; F, same, jaws; G, 1.5 mm dd postlarva dorsal; H, same ventral; I, 2.1 mm postlarva dorsal; J, adult ventral; K, adult arm ventral. Abbreviations: T, tooth; others as in Figs 1, 2, 5. Scale bars in millimetres.
Figure 14. Histampica duplicata postlarval development. A, B, 1.5 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 14. Histampica duplicata postlarval development. A, B, 1.5 mm dd postlarva; A, dorsal, note the thicker plate margins; B, ventral; C, D, 2.9 mm dd juvenile; C, dorsal; D, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.
Figure 12. Amphiura chiajei postlarval development. A, B, 0.4 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 12. Amphiura chiajei postlarval development. A, B, 0.4 mm dd postlarvae; A, dorsal, note the large fenestrations of the primary plates; B, ventral; C, D, 0.6 mm dd postlarvae; C, dorsal; D, ventral; E, F, 0.9 mm dd postlarva, E, dorsal, note the inter-radial plates (IR); F, ventral, note the infradental papillae (IP = MP2) on the dental plate (DP); G, H, 1.4 mm dd postlarvae; G, dorsal, note the k-plate (k); H, ventral, the adoral shield spine (ASS) has transformed into a flat scale; I, J, 2.0 mm postlarvae; I, dorsal; J, ventral, IP have moved onto oral plates; K–M, 2.4 mm dd juvenile; K, arm ventral, note the tentacle scales (TS); L, ventral; M, dorsal; N, O, 3 mm dd juvenile; N, dorsal; O, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.
Figure 8. Ophiura albida postlarval development. A, B, 0.4 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 8. Ophiura albida postlarval development. A, B, 0.4 mm dd postlarva; A, dorsal, note the multilayered structure of the disc plates; B, ventral; C, D, 0.5 mm dd postlarva; C, dorsal; D, ventral, note the shape of the first ventral arm plate (VAP1); E, 0.7 mm dd postlarva. Abbreviations: as in Figs 1–2, 5. Scale bars in millimetres.
Figure 9. Ophiura ophiura postlarval development. A, B, 0.3 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 9. Ophiura ophiura postlarval development. A, B, 0.3 mm dd postlarva; A, dorsal, note the flat disc; B, ventral; C, D, 0.5 mm dd postlarva; C, dorsal, note the high disc, madreporite still dorsal; D, ventral; E, F, 0.7 mm dd postlarva; E, dorsal; F, ventral; G, 1.8 mm dd postlarva dorsal, note the domed central plate (CPP); H, 4 mm dd juvenile dorsal, the central plate is only slightly domed. Abbreviations: as in Figs 1, 3. Scale bars in millimetres.
Figure 1 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 1. Asteronyx loveni postlarval development, note the thick, partly removed, skin. A, 1.8 mm dd postlarva dorsal; B, arm of same postlarva, note the radial shields; C, same individual ventral, note the large adoral shields; D, 2.5 mm dd postlarva dorsal; E, same individual ventral; F, arm of same individual lateral; G, vertebra proximal face; H, vertebra distal face; I, bulbous terminal plate; J, 3.2 mm postlarva dorsal; K, same ventral; L, arm distal, note the wide terminal plate; M, 4 mm dd postlarva dorsal; N, same ventral; O, arm spines of same; P, 3.2 mm postlarva vertebra proximal face; Q, distal face. Abbreviations: AS, adoral shield; LAP, lateral arm plate; M, madreporite; PP, primary plates; RPP, radial primary plates; RS, radial shield. Scale bars in millimetres.
Figure 2. Ophioscolex glacialis postlarval development. A, 0.5 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 2. Ophioscolex glacialis postlarval development. A, 0.5 mm dd postlarva dorsal; B, 0.9 mm dd postlarva dorsal; C, 0.9 mm postlarva ventral; D–G, 1.7 mm postlarvae; D, lateral; E, dorsal, note the irregular pattern of plates; F, arm dorsal; G, ventral, a spiniform tooth and two mouth papillae have formed; H, I, 3 mm dd juvenile ventral, note the large adoral shield spine; J, K, adult ventral. Abbreviations: ASS, adoral shield spine; DP, dental plate; OS, oral shield; others as in Fig. 1. Scale bars in millimetres.
Figure 7. Ophiopleura borealis postlarval development. A, B, 0.6 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 7. Ophiopleura borealis postlarval development. A, B, 0.6 mm dd postlarva; A, dorsal, note the high disc, swollen lateral arm plates and dorsal madreporite; B, ventral, note ventral hydropore at madreporite tip (between ASs); C, 0.8 mm dd postlarva dorsal, secondary inter-radial plates have formed above the radial primary plates (IR0); D, E, 1 mm dd postlarva; D, dorsal, secondary radial plates (SRP) have formed above the radial primary plates; E, ventral, the madreporite is now ventral; F, 1.2 mm dd postlarva dorsal; G, H, 1.8 mm dd postlarva; G, dorsal, secondary inter-radial plates (IR2) have formed below the first inter-radial plates (IR1); H, ventral, a second mouth papilla has formed on the dental plate; I, J, 2.6 mm dd juvenile; I, dorsal, the k-plate separates the radial shields proximally; J, ventral; K–L, 5 mm dd juvenile; K, dorsal, note the thick skin on the disc only partly removed; L, ventral; M, arm lateral, note two widely spaced short arm spines; N, arm ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.
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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.