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Figure 5. Ophiolimna bairdi postlarval development. A–D, 1 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 5. Ophiolimna bairdi postlarval development. A–D, 1 mm dd postlarvae; A, dorsal; B, arm dorsal; C, arm ventral; D, ventral; E, 1.6 mm dd postlarva dorsal; F, 1.6 mm dd ventral; G, same, jaw; H, 2 mm dd postlarva. Abbreviations: BS, buccal scale; MP, mouth papilla; OP, oral plate; others as in Figs 1, 2. Scale bars in millimetres.
Figure 4 in Who's who among baby brittle stars (Echinodermata: Ophiuroidea): postmetamorphic development of some North Atlantic forms
Figure 4. Ophiacantha anomala postlarval development, stages taken from brooding animal are termed embryo, free-living stages postlarvae. A, B, 0.6 mm dd embryo dorsal; C, 0.9 mm dd embryo dorsal; D, 1.3 mm dd embryo dorsal; E, 1.3 mm embryo ventrolateral; F, 1.6 mm dd; G, 2 mm dd postlarva ventral; H, 3 mm dd juvenile jaw. Scale bars in millimetres.
Figure 2 in Brittle stars (Echinodermata: Ophiuroidea) from La Réunion and the systematic position of Ophiocanops Koehler, 1922
Figure 2. SEM images of Ophiocanops multispina sp. nov. holotype (MNHN EcOs 23818–23820). A, dorsal view; B, dorsal disc; C, dorsal arm plates beyond gonadal chamber; D, disc spine; E, arm laterally; F, dorsal arm spine; G, ventral arm spines; H, lateral arm plate; I, base of dorsal arm spine; J, ventral overview; K, first ventral arm plate; L, arm ventrally; M, proximal face of vertebra; N, distal face of vertebra. Abbreviations: AS, adoral shield; DAP, dorsal arm plate; LAP, lateral arm plate; M, madreporite; NO, nerve opening; OP, oral papillae; SA, spine articulation; VAP, ventral arm plate. Scale bars in millimetres.
Figure 4 in Brittle stars (Echinodermata: Ophiuroidea) from La Réunion and the systematic position of Ophiocanops Koehler, 1922
Figure 4. Digital images of Amphioplus sp.; A, ventral view; B, dorsal view; C, arm in dorsal view; SEM images of Amphipholis squamata; D, dorsal view; E, ventral view. Abbreviations: AS, adoral shield; DAP, dorsal arm plate; GP, genital plates; LAP, lateral arm plate; OP, oral papillae; OS, oral shield; RS, radial shield; VAP, ventral arm plate. Scale bars in millimetres.
Fig. 4. Oral papillae sensu lato. A in Interactive identification key to all brittle star families (Echinodermata; Ophiuroidea) leads to revised morphological descriptions
Fig. 4. Oral papillae sensu lato. A. Ventral side of a schematic brittle star. B. One angle of the oral frame includes a dental plate (DP), two oral plates (= half-jaws) (OP), two adoral shields (AdSh), and one oral shield (OSh), positioned from proximal towards distal. The typical position of teeth, tooth papillae, secondary infradental papillae (2IPa), infradental papillae (IPa), buccal scale, secondary adoral shield spine (2AdShSp), adoral shield spine (AdShSp) on DP, OP and AdSh are illustrated, respectively. The presence / absence, number and shape of each papilla vary among different taxa.
Fig. 6 in Interactive identification key to all brittle star families (Echinodermata; Ophiuroidea) leads to revised morphological descriptions
Fig. 6. DELTA interactive key workspace. The software window shows: available characters (blue box), used characters (grey), remaining taxa (green) and eliminated taxa (red).
Fig. 2 in Interactive identification key to all brittle star families (Echinodermata; Ophiuroidea) leads to revised morphological descriptions
Fig. 2. SEM images of various brittle star ossicles. A–E. Disc structures. A. Dorsal disc, radial shield with tubercles (Ophiomusa lymani (Wyville-Thomson, 1873)). B. Dorsal disc (Ophiolimna bairdi (Lyman, 1883)). C. Ventral disc (Ophionereis porrecta Lyman, 1860), the interradius is assumed as a triangle and H gives its height. D. Dorsal disc, triangular radial shield (Ophiactis savignyi (Müller & Troschel, 1842)). E. Ventral disc, mouth (Ophioderma sp.). – F–H. Atypical arm spines. F. Umbrella-shaped arm spine (Ophiotholia spathifer (Lyman, 1879)). G. Hook-shaped arm spine (Asteronyx loveni Müller & Troschel, 1842). H. Bristle spines (Ophiernus vallincola Lyman, 1878). – I–L. Lateral arm plates (LAP). I. LAP with constriction (Ophioscolex glacialis Müller & Troschel, 1842). J. Dorsal and ventral part of LAP without constriction (Ophiura ophiura (Linneaus, 1758)). K. Ventral part of LAP projecting ventro-proximalwards (Ophiopallas paradoxa Koehler, 1904). L. Ventral part of LAP not projecting ventro-proximalwards (Ophiosphalma fimbriatum (Koehler, 1922)).
Fig. 5. Typical arm spine shape. A in Interactive identification key to all brittle star families (Echinodermata; Ophiuroidea) leads to revised morphological descriptions
Fig. 5. Typical arm spine shape. A. Tapering (conical): distally ⅓ as thick as proximal diameter with a round cross-section; Pointed: distally half as thick as proximal diameter with a round cross-section; Cylindrical: same thickness at both ends with flat/round tip. B. Flat: distally half as thick as proximal diameter with oval cross-section. Red dashed lines show the ⅓ distal cross-section. The letters ʻaʼ and ʻbʼ illustrate the diameter of ⅓ distal and basal cross-sections, respectively. ʻa/bʼ shows the approximate ratio of these diameters.
Fig. 3 in Interactive identification key to all brittle star families (Echinodermata; Ophiuroidea) leads to revised morphological descriptions
Fig. 3. SEM images of various ossicle structures in brittle stars. A. Muscle and nerve opening on LAP separated by small ridge if at all (Amphiura chiajei Forbes, 1843). B. Muscle and nerve opening on LAP separated by large, prominent ridge or regular stereom (Ophiolycus purpureus (Düben & Koren, 1846)). C. Non-keeled vertebra (Amphiura chiajei). D. Keeled vertebra (Ophiothrix fragilis Abildgaard, 1789). E. Vertebra with oral bridge (Euryale aspera Lamarck, 1816). F. Sockets indicate teeth and tooth papillae on dental plate as single row (Amphilepis norvegica (Ljungman, 1865)). G. ½ single row of teeth and ½ tooth papillae (Ophiothrix fragilis). H. ⅔ single row of teeth and ⅓ tooth papillae (Ophiocamax vitrea Lyman, 1878). I. Sockets on dental plate covering evenly (Asteronyx loveni Müller & Troschel, 1842). J–K. LAP not arched = position lateral. L. LAP arched = wrapped around the arm.
FIGURE 11 in A revision of the unusual feather star genus Atopocrinus with a description of a new species (Echinodermata: Crinoidea)
FIGURE 11. Atopocrinus ojii new species. SEM images. Pinnulars of proximal pinnules. A–C, E, H–I. Paratype (OMNH Iv2448). D, F, G. Paratype (USNM 1548291). A. P1(1) distal facet. B. P2(1) proximal facet. C. P2(3) distal facet. D. Long proximal pinnular, ambulacral view, proximal articulation at right. E. P2, proximal pinnular, broken to show hollow interior. F. Middle pinnular, ambulacral view, distal facet uppermost. G. Mid-distal pinnular, abambulacral view, distal facet uppermost. H. P2, middle pinnular, proximal facet. I. P2, distal pinnular, distal facet. Scale bars: 500 μm.
Fig. 3 in Phylogeny and morphology of Himerometroidea (Echinodermata: Crinoidea) feather stars in Singapore
Fig. 3. Zygometra cf. comata morphological characters. A, middle brachials everted at distal margins (red arrow); B, syzygy perforation between first and second ossicles of IBr (red arrow), and synarthry (yellow arrow); C, cirri with middle to distal cirrals bearing sharp aboral spines (red arrow) that begin abruptly (yellow arrow); D, smooth and weakly carinate proximal pinnules.
Fig. 5 in Phylogeny and morphology of Himerometroidea (Echinodermata: Crinoidea) feather stars in Singapore
Fig. 5. Dichrometra sp. morphological characters. A, division series illustrating two ossicles each of IBr2 (IBr1–IBr2), IIBr2 (IIBr1–IIBr2) and IIIBr2 (IIIBr1–IIIIBr2) division series; B, cirri with distal cirrals aborally carinate (red arrow); C, cirri with middle to distal cirrals bearing sharp aboral spines (red arrow); D, proximal pinnules distally flagellate and tapering to a point. P2 longer and basally stouter than P1 and P3; E, spinular side projection on distal edge of distal pinnulars on proximal pinnules on one juvenile (SS-2538-2, ZRC.ECH.0442).
Fig. 2 in Phylogeny and morphology of Himerometroidea (Echinodermata: Crinoidea) feather stars in Singapore
Fig. 2. Homalometra crenulata morphological characters. Red arrows indicate specific features described for each image (A–F, H–J). A, carination of proximal pinnulars of proximal pinnules; B, lack of carination on the proximal pinnulars of juvenile proximal pinnules; C, broad, round triangular processes on distal corners of ambulacral side of proximal pinnules; D, unique pinnular with triangular processes of proximal pinnulars are small, compact, and tightly appose to the pinnulars; E, serration on the distal margin of distal pinnulars; F, bead-like tubercles on the distal edge of a radial; G, polar area of centrodorsal bumpy and uneven, with indentations that resemble obsolete cirri sockets; H, cirrals with a distally-directed triangular carinate extension; J, aboral projections compressed laterally on distal cirrals, terminating in 2–3 weak or strong teeth, or almost a flattened tip (lower-right arrow).
Fig. 12 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 12. Distribution of the main biogeographic components of species of Euryalida Lamarck, 1816 identified along the East Atlantic.
Fig. 9 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 9. SEM photographs of internal skeletal characters of specimens of Astrodendrum juancarlosi sp. nov. (MNCN 29.02/1534). A. Granule-shaped ossicles from disc. B. Ossicle from baseplates. C. Valve. D. Baseplate. E. Lateral arm plate. F. Arm spines. G. Distal view of vertebrae. H. Proximal view of vertebrae. I. Ventral view of vertebrae. J. Lateral view of vertebrae. K. Dorsal view of vertebrae. Abberviations: DT = depression for tentacle; NC = nerve canal; WC = water canal.
Fig. 6 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 6. Map from the study area with the location of the stations where specimens of Ophiocreas oedipus Lyman, 1879 were collected during the ten surveys off Northwest Africa.
Fig. 3. A–B in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 3. A–B. Asteronyx loveni Müller & Troschel, 1842 collected from Mauritanian waters on Distichoptilum gracile Verrill, 1882. C. Asterochema inornatum Koehler, 1906 collected from Western Sahara waters on Paramuricea sp. Koelliker, 1865. D. Ophiocreas oedipus Lyman, 1879 collected from Western Sahara waters, on Acanthogorgiidae indet. E–F. Astrodendrum juancarlosi sp. nov. (LZM-UV Bissau-0810-06146), specimens collected from Guinea Bissau waters. Not to scale.
Fig. 11 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 11. Gorgonocephalus pustulatum (H.L. Clark, 1916) (LZM-UV Bissau-0810-18012). A. Dorsal view. B. Ventral view. C. Detail of dorsal view. D. Detail of ventral view. E. Detail of ventral disc and arm base. F. Arm tip. G–H. Arm spine. I–J. Spine of disc.
Fig. 1 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 1. Map from the study area with the location of the 1298 bottom trawling stations carried out during the ten surveys off Northwest Africa.
Fig. 5 in Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa
Fig. 5. Map from the study area with the location of the stations where specimens of Asteroschema inornatum Koehler, 1906 were collected during the ten surveys off Northwest Africa.
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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)
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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.