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629 results for “continental shelf”
FIGURE 4 in Ophiuroids (Echinodermata; Ophiuroidea) of biogenic habitats on the continental shelf of New Zealand
FIGURE 4. Proximal arm segments from two morphological variations of Astroceras elegans (Bell, 1917) specimens treated with bleach to expose arm plates. a: NIWA 56499, TAN0906/154, morph 2, dd=10.4 mm; b: NIWA 57061, TAN0906/178, morph 1, cf. A. maui McKnight, 1968, dd=9.24 mm. Scale bar =1 mm, g = spiny granule, as = arm spine, lap = laterally placed arm plates.
FIGURE 2 in Bryozoans from Rio Grande do Sul Continental Shelf, Southern Brazil
FIGURE 2. Chaperia taylori sp. nov. (MNRJ-1163). A, colony fragment; B, close-up of autozooids, showing the short cryptocyst, spine bases, opesiae, occlusor laminae, and numerous communication pores in the inner transverse walls. Scalebars: A, 500 µm; B, 100 µm.
FIGURE 3 in Bryozoans from Rio Grande do Sul Continental Shelf, Southern Brazil
FIGURE 3. Micropora nodimagna sp. nov. (A, C: MNRJ-1166; B: MNRJ-1167). A, colony fragment showing fertile and nonfertile zooids; B, frontal view of some non-fertile autozooids; C, fertile zooid with an ooecium. Scalebars: A, 200 µm; B, C, 100 µm.
FIGURE 5. Arachnopusia aff. pusae Marcus, 1955 in Bryozoans from Rio Grande do Sul Continental Shelf, Southern Brazil
FIGURE 5. Arachnopusia aff. pusae Marcus, 1955 (A, C: MNRJ-1174; B, D: MNRJ-1173). A, colony fragment with infertile zooids; B, colony fragment with ovicellate zooids in the distal region; C, close-up of autozooids, showing ligulate foramina in the frontal shield, oral avicularia (eroded), oral-spine bases and well-developed concave apertural plates below distal orificial rims; D, fertile zooids with ooecia. Scalebars: A, B, 500 µm; C, D, 200 µm.
FIGURE 1 in Bryozoans from Rio Grande do Sul Continental Shelf, Southern Brazil
FIGURE 1. Map of study area (Rio Grande do Sul continental shelf). Numbers refer to the following sampling locations: 1, Parcel do Carpinteiro area (in front of Rio Grande and São José cities); 2, stations along the beach; 3, Hermenegildo area (in front of Santa Vitória do Palmar city). Box 1 and 3 show details of the continental shelf with bathymetry of the studied areas.
FIGURE 4 in Bryozoans from Rio Grande do Sul Continental Shelf, Southern Brazil
FIGURE 4. Cellaria riograndensis sp. nov. (A, D: MNRJ-1192; B: MNRJ-1170; C: MNRJ-1191). A, distal part of an internode showing an incipient branch bifurcation; B, close-up of autozooids and a vicarious avicularium; C, part of internode showing ovicellate zooids with ooecial apertures; a vicarious avicularium is also shown; D, close-up of autozooids and a vicarious avicularium; note the difference in shape of the combined opesial-rostral foramen compared with that in B, perhaps the consequence of erosion. Scalebars: A, 500 µm; B–D, 100 µm.
FIGURE 6 in Bryozoans from Rio Grande do Sul Continental Shelf, Southern Brazil
FIGURE 6. Exochella moyanoi sp. nov. (MNRJ-1176). A, colony fragment with abundant ovicellate zooids; B, ovicellate zooids; note orifice shape and the median suboral umbo in most zooids, and two avicularia at upper right; C, close-up of ovicellate zooids; two lateral avicularia visible. Scalebars: A, 500 µm; B, 200 µm; C, 100 µm.
FIGURE 7 in Bryozoans from Rio Grande do Sul Continental Shelf, Southern Brazil
FIGURE 7. Hippomonavella brasiliensis Ramalho et al. 2009 (A, B: MNRJ-1178; C: (MNRJ-1179). A, colony fragment with infertile zooids; B, close-up of an entire zooid; note the form of the intact orifice with condyles and an eroded suboral avicularium, and the marginal areolar-septular pores; C, close-up of a fertile zooid showing the perforate ooecium (broken), intact suboral avicularium and orifice with condyles. Scalebars: A, 500 µm; B, 100 µm; C, 50 µm.
FIGURE 9. Hippoporella gorgonensis Hastings, 1930 in Bryozoans from Rio Grande do Sul Continental Shelf, Southern Brazil
FIGURE 9. Hippoporella gorgonensis Hastings, 1930 (MNRJ-1183). A, general view of a colony with fertile and non-fertile zooids and the growing margin; B, zooids at the colony margin, showing oral-spine bases, suboral mucrones, areolar-septular pores and ooecia; C, broken ooecia of fertile zooids; note the suboral umbo and adventitious avicularium of the zooid at left; D, fertile zooids showing ooecia with an apical umbo. Scalebars: A, 500 µm; B–D, 200 µm; C, 100 µm.
FIGURE 8. Turbicellepora pourtalesi Winston, 2005 in Bryozoans from Rio Grande do Sul Continental Shelf, Southern Brazil
FIGURE 8. Turbicellepora pourtalesi Winston, 2005 (A, B, D, F: MNRJ-1222; C: MNRJ-1223; E: MNRJ-1219). A, distal part of a colony fragment with infertile zooids; B, partly branched colony fragment with some ovicellate zooids in the proximal region; C, orifice showing sinus and condyles; D, fertile part of colony showing location of ooecia (broken) and several suboral and frontal avicularia; E, part of eroded colony surface showing orifices and large avicularia; F, fertile part of colony showing intact ooecia with frontal perforations. Scalebars: A, B, 500 µm; C, 20 µm; D, F, 200 µm; E, 100 µm.
FIGURE 5 in The genus Xestoleberis (Ostracoda: Xestoleberididae) in the Northern, Northeastern and Eastern regions of the Brazilian continental shelf
FIGURE 5. Xestoleberis subtriangularis sp. nov. 1. Female, RV (MP-O-1692, holotype). 2. Female, LV (MP-O-1694). 3. Female, dorsal view (MP-O-1695). 4. Male, RV (MP-O-1693). 5. Male, LV (MP-O-1693). 6. Central muscle scars, RV (MP-O- 1696). 7. Hinge (MP-O-1697). 8. Sieve-type normal pore canal (MP-O-1692, holotype). 9. Lip-type normal pore canal (MP-O- 1692, holotype). 10. Xestoleberis-spot (MP-O-1697). 11. Schematic drawing of some LV internal features.
FIGURE 4 in The genus Xestoleberis (Ostracoda: Xestoleberididae) in the Northern, Northeastern and Eastern regions of the Brazilian continental shelf
FIGURE 4. Xestoleberis amazonica sp. nov. 1. Female, RV (MP-O-1938, holotype). 2. Female, LV (MP-O-1942). 3. Female, dorsal view (MP-O-1943). 4. Male, RV (MP-O-1939). 5. Male, LV (MP-O-1939). 6. Male, dorsal view (MP-O-1940). 7. Hinge (MP-O-1942). 8. Central muscle scars, LV (MP-O-1942), not to scale. 9. Male, ventral view (MP-O-1940). 10. Sieve-type normal pore canal (MP-O-1941). 11. Lip-type normal pore canal (MP-O-1941). 12. Simple-type normal pore canal (MP-O- 1941). 13. Xestoleberis-spot (MP-O-1942). 14. Schematic drawing of some LV internal features.
FIGURE 2 in The genus Xestoleberis (Ostracoda: Xestoleberididae) in the Northern, Northeastern and Eastern regions of the Brazilian continental shelf
FIGURE 2. Distribution of Xestoleberis species in Brazilian continental shelf. The hatched area corresponds to the Transitional Zone of Coimbra et al. (1995). Each dot represents one sample.
FIGURE 6. 1–11 in The genus Xestoleberis (Ostracoda: Xestoleberididae) in the Northern, Northeastern and Eastern regions of the Brazilian continental shelf
FIGURE 6. 1–11. Xestoleberis virilis sp. nov. 1. Female, RV (MP-O-1816). 2. Female, LV (MP-O-1816). 3. Male, dorsal view (MP-O-1814, holotype). 4. Male, Carapace, RV (MP-O-1814, holotype). 5. Male, LV (MP-O-1815). 6. Male, ventral view (MP-O-1814, holotype). 7. Xestoleberis-spot (MP-O-1816). 8. Simple-type normal pore canal (MP-O-1816). 9. Central muscle scars, LV (MP-O-1815). 10. Hinge (MP-O-1816). 11. Schematic drawing of some internal features. 12–14. Xestoleberis sp. 12. Carapace, RV (MP-O-1698). 13. Carapace, LV (MP-O-1698). 14. Carapace, dorsal view (MP-O-1698).
FIGURE 1 in The genus Xestoleberis (Ostracoda: Xestoleberididae) in the Northern, Northeastern and Eastern regions of the Brazilian continental shelf
FIGURE 1. Map of the Brazilian continental shelf and its regional zonation (modified from Muehe & Garcez 2005).
FIGURE 3. 1–12 in The genus Xestoleberis (Ostracoda: Xestoleberididae) in the Northern, Northeastern and Eastern regions of the Brazilian continental shelf
FIGURE 3. 1–12. Xestoleberis inesae sp. nov. 1. Female, Carapace, RV (MP-O-1608, holotype). 2. Female, Carapace, LV (MP-O-1608, holotype). 3. Female, dorsal view (MP-O-1608, holotype). 4. Male, RV (MP-O-1609). 5. Male, LV (MP-O- 1609). 6. Male, dorsal view (MP-O-1610). 7. Hinge (MP-O-1611). 8. Central and mandibular muscle scars, RV (MP-O-1612). 9. Female, ventral view (MP-O-1608, holotype). 10. Lip-type normal pore canal (MP-O-1608, holotype). 11. Schematic drawing of some RV internal features. 12. Xestoleberis-spot (MP-O-1607). 13–14. Xestoleberis umbonata Whatley et al. 1998. 13. Male, RV (MP-O-1606). 14. Male, LV (MP-O-1607).
FIGURE 3 in Chriolepis prolata, a new species of Atlantic goby (Teleostei: Gobiidae) from the North American continental shelf
FIGURE 3. Outline drawing of holotype of Chriolepis prolata (USNM 230001) showing sensory papillae pattern (composite from both sides) and extent of lateral squamation. Right and left cross-hatchings indicate extent of ctenoid and cycloid scales, respectively. Pectoral fin is cut-away (only its base is indicated), and outlines of other fins, shown as dashed lines, are approximate.
FIGURE 4 in Chriolepis prolata, a new species of Atlantic goby (Teleostei: Gobiidae) from the North American continental shelf
FIGURE 4. Distribution map for Chriolepis prolata (circles). The holotype is USNM 230001 and paratypes are AMNH 87272, SIO 14–37, SIO 14–38, and SIO 14–39. The collecting locality for formerly designated paratype of Chriolepis bilix (Hastings & Findley 2013) from off SW Florida (USNM 43554) and the type locality for C. bilix (diamond) in the northern Bahamas (USNM 199058) are also indicated. Map courtesy of GoogleEarth.
FIGURES 98–103. Conescharellina cookae n in New and little-known cheilostomatous Bryozoa from the south and southeastern Brazilian continental shelf and slope
FIGURES 98–103. Conescharellina cookae n. sp., off São Paulo, Brazil (REVIZEE station 6693). 98, Colony; 99, antapical end of colony. 100–103, specimen from type locality. 100, Apical end of colony, note the porous areas; 101, close-up of orifice with some peristomial avicularia; 102, close-up of orifice; 103, close-up of avicularium.
FIGURES 104–109. Conescharellina bocki n in New and little-known cheilostomatous Bryozoa from the south and southeastern Brazilian continental shelf and slope
FIGURES 104–109. Conescharellina bocki n. sp., off São Paulo, Brazil (REVIZEE station 6693). 104, Colony; 105, antapical end of colony; 106, ovicelled zooid; 107, autozooids with some peristomial avicularia and kenozooids; 108, close-up of orifice; 109, close-up of kenozooid.
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Allen Brain Atlas
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