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FIGURE 3. A and B in Notes on a small collection of thecate hydroids (Cnidaria: Hydrozoa) from Tristan da Cunha, south Atlantic
FIGURE 3. A and B: Filellum sp. (material from station Stn. I10) – portion of colony (A); hydrotheca (B). C: Halecium sp. – four erect stems. D: Halecium cf. beanii (Johnston, 1838) – fragment of monosiphonic part of stem with origin of a side branch. E and F: Halecium cf. delicatulum (Coughtrey, 1876), morphotype 1 – portion of stem (E); hydrotheca (F). G to P: Halecium? delicatulum (Coughtrey, 1876), morphotype 2 (part) – whole colony on piece of alga (G); cross section through the stolon (H); basal part of stem (I); portion of colony (J); various branching patterns (K–M); fragment of stem showing internodes (N); various shapes of primary hydrophores (O); gonotheca arising from primary hydrophore (P). Scale bars: 50 µm (H); 100 µm (F); 200 µm (B, F, O); 300 µm (A, E, I, P); 400 µm (D, K, L, M); 500 µm (N); 2 mm (J); 1 cm (G).
FIGURE 1 in Notes on a small collection of thecate hydroids (Cnidaria: Hydrozoa) from Tristan da Cunha, south Atlantic
FIGURE 1. Map of the Tristan da Cunha archipelago, with the location of stations yielding hydroid material.
FIGURE 2 in Notes on a small collection of thecate hydroids (Cnidaria: Hydrozoa) from Tristan da Cunha, south Atlantic
FIGURE 2. Typical habitats for hydroids on Tristan de Cunha. A and E: Dense Aglaophenia parvula Bale, 1882 tufts growing on wave-surged reef crest with sponges and colonial anemones. B: Silicularia rosea Meyen, 1834 and Obelia geniculata (Linnaeus, 1758) on Macrocystis pyrifera fronds. C: Antenella quadriaurita Ritchie, 1909 on vertical rock face with bryozoans, sponges and ascidians. D: Sertularella gayi (Lamouroux, 1821) and smaller hydroids growing on bedrock at 30 m. Photo courtesy of Sue Scott (A, B, C, and E) and Paul Tyler (D).
FIGURE 2 in Notes on a small collection of thecate hydroids (Cnidaria: Hydrozoa) from Tristan da Cunha, south Atlantic
FIGURE 2. Typical habitats for hydroids on Tristan de Cunha. A and E: Dense Aglaophenia parvula Bale, 1882 tufts growing on wave-surged reef crest with sponges and colonial anemones. B: Silicularia rosea Meyen, 1834 and Obelia geniculata (Linnaeus, 1758) on Macrocystis pyrifera fronds. C: Antenella quadriaurita Ritchie, 1909 on vertical rock face with bryozoans, sponges and ascidians. D: Sertularella gayi (Lamouroux, 1821) and smaller hydroids growing on bedrock at 30 m. Photo courtesy of Sue Scott (A, B, C, and E) and Paul Tyler (D).
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.
FIGURE 4 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 4. Holotype of Feracrinus heinzelleri n. sp. (ZSM 0000/1). A: general view with ray broken at Br2/3; B: anal sac in CD interray; C: oral cone, view from broken A ray; D: lateral view of pinnule insertion on arm; E: hyposynostosial brachial showing flat synostosial facet; F: episynostosial brachial, distal facet showing pinnule socket (arrow head) and interbrachial muscular synarthry (arrow); G: lateral view of same brachial (side of pinnule insertion). Star: muscular articulation.
FIGURE 1 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 1. Stalk articulation in Bathycrinus aldrichianus (USNM E17896). A–B: proximal synarthries, C: mid mesistele synarthry, D–E: distal mesistele synarthries, F: dististele synarthry, A: small juvenile, B–D: medium-sized specimen, E–F: large specimen.
FIGURE 2 in Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica
FIGURE 2. Bathycrinus australis (ZSM 20020004). A–G, I–J: large specimen; H, K–L: juvenile specimen; A–B: views of crown; C: distal stalk with bases of thin roots; D: progressive transition from dististele to mesistele; E: other distal stalk with large roots encrusting pebble; F–H: distal synarthries; I–L: mesistele synarthries.
FIGURE 11 in Morphological and morphometric comparisons of the first zoea of four species of purse crabs (Decapoda: Brachyura: Leucosiidae) from the Brazilian South Atlantic
FIGURE 11. Morphometric variables utilized in the separation of species by discriminant analysis (µm). Letters in common, indicate no statistically significant difference (Tukey, α = 0.05).
FIGURE 7 in Morphological and morphometric comparisons of the first zoea of four species of purse crabs (Decapoda: Brachyura: Leucosiidae) from the Brazilian South Atlantic
FIGURE 7. Maxilla of the first larval stage (zoea I): A, Persephona mediterranea; B, P. lichtensteinii; and C, P. punctata.
FIGURE 4 in Morphological and morphometric comparisons of the first zoea of four species of purse crabs (Decapoda: Brachyura: Leucosiidae) from the Brazilian South Atlantic
FIGURE 4. First larval stage (zoea I): antennule (A, Persephona mediterranea; B, P. lichtensteinii; and C, P. punctata) and antenna (A', P. mediterranea; B', P. lichtensteinii; and C', P. punctata).
FIGURE 10 in Morphological and morphometric comparisons of the first zoea of four species of purse crabs (Decapoda: Brachyura: Leucosiidae) from the Brazilian South Atlantic
FIGURE 10. Relationship between the first two variables (canonical discriminants) for morphometric data of the species studied. The circle represents their respective confidence interval of 95%.
FIGURE 3 in Morphological and morphometric comparisons of the first zoea of four species of purse crabs (Decapoda: Brachyura: Leucosiidae) from the Brazilian South Atlantic
FIGURE 3. Dorsal view of abdomen of the first larval stage (zoea I): A, Persephona mediterranea; B, P. lichtensteinii; C, P. punctata; and C', P. punctata (telson enlarged, showing the detail of the simple setae present near the distal margin).
FIGURE 6 in Morphological and morphometric comparisons of the first zoea of four species of purse crabs (Decapoda: Brachyura: Leucosiidae) from the Brazilian South Atlantic
FIGURE 6. Maxillule of the first larval stage (zoea I): A, Persephona mediterranea; B, P. lichtensteinii; and C, P. punctata.
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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.