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1,337 results for “antarctica”
FIGURE 9 in Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica
FIGURE 9. Caulophacus (Oxydiscus) weddelli (SMF 10527). A. Deck photograph. B. Dermal pinule (SEM). C. Microsclere with onychoid tip (arrow) (SEM).
FIGURE 7 in Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica
FIGURE 7. Spicules of Lophocalyx topsenti, n. sp. holotype (SMF 10606). A. Anchorate hypodermal pentactin in end and side views with magnified tangential ray tip. B. Regular hypodermal pentactin in end and lateral view with enlargement of tangential ray end. C. Pinular hexactine dermalium with enlargements of pinular and tangential rays. D. Pinular hexactine atrialium with enlargements of pinular, tangential and proximal ray ends. E. Large choanosomal hexactin with alternate forms of short ray. F. Thick diactin with enlargments of two ends. G. Thin choanosomal diactin with enlargements of variety of ends. H. Oxyhexaster with enlargement of a terminal ray end. I. Oxyhexactin. J. Strobiloplumicome in optical section with rays perpendicular to the page omitted, with enlargement of one primary and terminal ray.
FIGURE 4. Lophocalyx profundum, n in Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica
FIGURE 4. Lophocalyx profundum, n. sp. A. Holotype deck photo (SMF 10524). B. & C. Paratypes, deck photos. D. Oxyhexaster (SEM). E. Anchorate hypodermalium tip (SEM). F. Segment of oxyhexaster terminal ray (SEM). G. Terminal tuft of strobiloplumicome (SEM). H. Diactine dermalium (SEM). (All spicules from holotype).
FIGURE 3 in Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica
FIGURE 3. Spicules of Malacosaccus coatsi from stn. PS67/102-11 (SMF 10702). A. Dermal pinular hexactin and enlargements of three ray ends. B. Hexactine principalium with enlargement of ray end. C. Pentactine principalium with enlargements of tangential and proximal ray ends. D. Oxyhexaster. E. Floricome (two ray sets perpendicular to the page omitted) with enlargement of terminal ray tip. F. Series of one ray sets from floricome (right), floricoid discohexaster (center) and floricoid onychohexaster (left). G. Spiroxyhexaster (rare).
FIGURE 2 in Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica
FIGURE 2. Malacosaccus coatsi from stn. PS67/102-11 (SMF 10702). A. View of upper body. B. Distal pinule ray of dermalium (SEM). C. Oxyhexaster (SEM). D. Floricome with tufts missing and enlargement of terminal ray tips (SEM). E. Floricoid discohexaster with enlargements of terminal ray tips (SEM). F. Broken onychohexaster with enlargement of terminal ray tip (SEM).
FIGURE 1. A in Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica
FIGURE 1. A. Acoelocalyx brucei (SMF 10530). B. Malacosaccus coatsi from stn PS67/121-7 (SMF 10521).
FIGURE 6. Lophocalyx topsenti, n in Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica
FIGURE 6. Lophocalyx topsenti, n. sp. A. Holotype deck photo (SMF 10606). B. Paratype, part of the fragments (RSM 1921.143.1389). C. Anchorate hypodermalia from the holotype (left) and paratype (right). D. Fusion of megascleres of the paratype. E. Oxyhexaster (SEM). F. Oxyhexactin (SEM). G. Strobiloplumicome centrum (SEM). H. Whole strobiloplumicome ensnared in oxyhexasters (SEM). I. Magnified view of terminal rays of strobiloplumicome (SEM). (All microscleres from holotype).
FIGURE 5 in Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica
FIGURE 5. Spicules of Lophocalyx profundum, n. sp. holotype (SMF 10524). A. Anchorate hypodermal pentactin in end and side views. B. Two regular hypodermal pentactins with enlargements of tangential and proximal ray ends. C. Thick diactin with enlargements of ends. D. Thin choanosomal diactin with enlargements of ends. E. Diactine, triactine and monactine dermalia. F. Pinular hexactine atrialium with enlargements of ray ends. G. Oxyhexaster with enlargement of terminal ray segment. H. Strobiloplumicome in optical section with rays perpendicular to the page omitted, with enlargement of a terminal ray end.
FIGURE 10 in Hexactinellida (Porifera) from the ANDEEP III Expedition to the Weddell Sea, Antarctica
FIGURE 10. Anisodiscohexaster microscleres of (A) Rossella racovitzae (SMF 10705) and (B) Rossella nuda (SMF 10706) (SEM).
FIGURE 2 in A new Antarctic species of Aristias Boeck (Crustacea, Amphipoda, Aristiidae), with remarks on the genus in Antarctica
FIGURE 2. Aristias excavatus sp. nov., holotype male, 10.25 mm, NIWA 58157. Scale bars: a = 0.2 mm (antenna 2), b = 0.2 mm (mouthparts).
FIGURE 1 in A new Antarctic species of Aristias Boeck (Crustacea, Amphipoda, Aristiidae), with remarks on the genus in Antarctica
FIGURE 1. Aristias excavatus sp. nov., holotype male habitus, 10.25 mm, NIWA 58157. Scale bar = 2 mm.
FIGURE 4 in A new Antarctic species of Aristias Boeck (Crustacea, Amphipoda, Aristiidae), with remarks on the genus in Antarctica
FIGURE 4. Aristias excavatus sp. nov., holotype male, 10.25 mm, NIWA 58157. Scale bars: a = 0.4 mm (pereopods), b = 0.2 mm (uropods and telson).
FIGURE 3 in A new Antarctic species of Aristias Boeck (Crustacea, Amphipoda, Aristiidae), with remarks on the genus in Antarctica
FIGURE 3. Aristias excavatus sp. nov., holotype male, 10.25 mm, NIWA 58157. Scale bars: a = 0.4 mm (gnathopods), b = 0.4 mm (pereopods).
FIGURE 11 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 11. Records of species belonging to the genera Bathycrinus and Porphyrocrinus in the South Atlantic and neighbouring Southern Ocean waters. Hachured area: Bathycrinus gracilis record locations, orange dots: Porphyrocrinus incrassatus or closely related specimen record locations, red dots: Bathycrinus australis record locations, yellow dots: Bathycrinus aldrichianus record locations, AP: Antarctic Peninsula, MAR: Mid Atlantic Ridge, WR: Walvis Ridge, WS: Weddell Sea. numbers indicate the number of specimens dredged at the given location.
FIGURE 9 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 9. Juvenile of Hyocrinus sp. (MNHN IE-2012-755) from Walvis Ridge. A: general view; B: tegmen with oral cone (oc) and anal cone (ac), one arm removed; C: lateral view of arm with sharp cover plates.
FIGURE 10 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 10. Porphyrocrinus cf. incrassatus. A–E: Walvis specimen (MNHN IE-2012-760); A: general view; B: aboral cup (B: basal ring, C1: proximalmost columnal, R: radial ring); C: detail of arm with muscular synarthry (m) and synostosis (s) Between brachial (Br) pairs; D–E: distal mesistele columnal of preserved stalk; F–G: Cape Basin stalk fragment (ZSM 20070046); F: proximal columnal (more distal position than D–E); G: distal columnal.
FIGURE 8 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 8. Juvenile of Hyocrinus bethellianus (MNHN IE-2012-756) from Walvis Ridge. A: oral cone with two proximal arms; B: lateral view of arm with cover plates; C: detail of orals with three hydropores at base of right oral (arrow).
FIGURE 6 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 6. Paratype of Feracrinus heinzelleri n. sp. (ZSM 0000/2). A: general view; B–C: distal columnals of preserved stalk.
FIGURE 5 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 5. Holotype of Feracrinus heinzelleri n. sp. (ZSM 0000/1), pinnule ossicles. A–C: views of the two proximalmost pinnulars (p1 and p2); A: proximal adoral view showing facet of muscular transverse synarthry; B: adoral view, proximal transverse synarthry at right, distal synostosis at left, p1 articulated to p2 by muscular synarthry (see D); C: distal adoral view showing flat synostosial facet; D: proximal synarthry of p2; E: pinnular in mid pinnule with synostosial facets; F: distal pinnular with muscular articulations; G–I: H-shaped genital plate; G: front view; H: lateral external view, ambulacral side at top; I: lateral internal view; J: profile view of genital, H-shaped and covering plates on genital pinnule; K: detailed view of covering plates; L-M: dissociated proximal cover plate. adp: additional lateral plates; cp: cover plates; gp: genital H-shaped plates; p: pinnular.
FIGURE 3. Dumetocrinus aff. antarcticus. A–E in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 3. Dumetocrinus aff. antarcticus. A–E: specimen PS69/710-5; F: holotype of Dumetocrinus antarcticus (IRSNB 1897/1999-10131-589); D: symplexy of proximal mesistele; E–F: syzygies in distalmost stalk; an: anal sac; oc: oral cone.
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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.