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228 results for “marine sponge”
FIGURE 4. A in Cyclacanthia n. g. (Demospongiae: Poecilosclerida: Latrunculiidae incertea sedis), a new genus of marine sponges from South African waters, and description of two new species
FIGURE 4. A. Styles of C. bellae Samaai & Kelly [BMNH 2003.1.10.1]; B. Styles of C. cloverlyae sp. nov. [SAMH 5080]; C, D. Styles of U. mzimayiensis sp. nov. [SAMH 5082 and SAMH 5081]; E. Close up view of the proximal and distal ends of the style as found in C. cloverlyae sp. nov.; F, G. Close up view of the proximal and distal ends of the style as found in C.. mzimayiensis sp. nov..
FIGURE 3. A in Cyclacanthia n. g. (Demospongiae: Poecilosclerida: Latrunculiidae incertea sedis), a new genus of marine sponges from South African waters, and description of two new species
FIGURE 3. A. Gross morphology of genus holotype Cyclacanthia bellae Samaai & Kelly [BMNH 2003.1.10.1]; B. Gross morphology of C. cloverlyae sp. nov. [SAMH 5080]; C–D. Gross morphology of C. mzimayiensis sp. nov. [SAMH 5082 and SAM H5081]; E–F. Gross skeletal architecture of the holotype, C. bellae, showing several large tracts in cross section, tangential ectosomal skeleton, and the abundant interstitial microscleres.
FIGURE 2 in Cyclacanthia n. g. (Demospongiae: Poecilosclerida: Latrunculiidae incertea sedis), a new genus of marine sponges from South African waters, and description of two new species
FIGURE 2. Morphology and ontogenetic development of microscleres of Latrunculiidae: A. Ontogeny of Latrunculia [BMNH 1887.5.2.237, Latrunculia bocagei Ridley and Dendy, 1886 (from Samaai and Kelly, 2002)] B. Ontogeny of Tsitsikamma [BMNH 1997.7.3.2, Tsitsikamma favus Samaai and Kelly, 2002]. C. Ontogeny of Sceptrella [BMNH 1870.5.3.22 Sceptrella regalis Schmidt, 1870 (from Samaai & Kelly 2002)]; D. Ontogeny of Cyclacanthia [SAMH 5082, Cyclacanthia mzimayensis sp. nov.]; E. Isospinodiscorhabd of C. cloverlyae sp. nov. [SAM H5080]; F. Isospinodiscorhabd of C. bellae Samaai & Kelly [BMNH 2003.1.10.1]; G–H, Isospinodiscorhabd of C. mzimayiensis sp. nov. [SAM H5082 and SAM H5081].
FIGURE 1. Collection localities for Cyclacanthia n.g in Cyclacanthia n. g. (Demospongiae: Poecilosclerida: Latrunculiidae incertea sedis), a new genus of marine sponges from South African waters, and description of two new species
FIGURE 1. Collection localities for Cyclacanthia n.g. spp. on the east and south coasts of South Africa: A. C. bellae (Samaai & Kelly); B. C. mzimayiensis sp. nov.; C. C. cloverlyae sp. nov.
FIGURE 1 in An example of the importance of labels and fieldbooks in scientific collections: A freshwater sponge misunderstood for a marine new genus and species
FIGURE 1. Crelloxea spinosa holotype (YPM 9019). A, external morphology. B, transverse section of ectosome and choanosome. C, gemmules. D, oxea. E, acanthoxea. F, acanthostrongyles. G, current label of the holotype of Crelloxea spinosa. Notice the hand-written statement "Field no. 04–46" on the back of the label, just below the inscription "Yale Peabody Museum" at the top right. H, aerial view of Jaboatão dos Guararapes, in Recife metropolitan area, with Olho d'Água Lagoon at the top right.
FIGURE 22 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 22. Sponges in situ: A. Dragmacidon reticulatum. B. Agelas tubulata. C. Chalinula molitba. D. Dysidea variabilis.
FIGURE 21. Chelonaplysilla aff erecta Tsurnamal, 1967 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 21. Chelonaplysilla aff erecta Tsurnamal, 1967: A. Specimen preserved in alcohol. B. Irregular network composed by detritus in the ectosomal skeleton. C. Dendritic fibres in choanosomal skeleton.
FIGURE 18 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 18. Amphimedon complanata (Duchassaing 1850): A. Specimen with flabellate habit preserved in alcohol. B. Skeletal arrangement, ascending and connective fibres with a tendency to become fasciculate. C. Common thin strongylotes.
FIGURE 15 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 15. Dragmacidon reticulatum (Ridley & Dendy, 1886): A. Choanosomal skeleton in cross section, densely packed tracts and small to wide meshes are visible. B. Common styles and oxeas typically bent toward round ends and the middle.
FIGURE 12 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 12: Topsentia bahamensis Diaz, van Soest & Pomponi, 1993: A. Specimen preserved in alcohol; broken at half in lateral view. B. Longitudinal section of skeleton, with a wide choanosomal channel (centre down). C. Common oxeas in two size categories (LM).
FIGURE 10. Halichondria lutea Alcolado, 1984 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 10. Halichondria lutea Alcolado, 1984: A. Specimens preserved in alcohol, fistula seen upwards from the encrusting part. B. Skeleton in cross section, ill-defined tracts are visible. C and D. Oxeas in LM.
FIGURE 7. Spirastrella aff. mollis Verrill, 1907 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 7. Spirastrella aff. mollis Verrill, 1907: A. Specimen preserved in alcohol growing on Briozoan. B. Skeletal arrangement in cross section, in which appears the spiraster cortex above (dark fringe area) and a palisade of tylostyle tufts underneath. C. Common tylostyle head in SEM. D. Size relationship between the two categories of spirasters. E. Spiraster II. F. Spiraster I.
FIGURE 6 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 6. Cliona flavifodina Rützler, 1974: A. Cross section of skeletal arrangement. B. Common tylostyle with spherical head and detail of tip. C. Variation geometry of spirasters.
FIGURE 5 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 5. Cliona amplicavata Rützler, 1974: A. Tylostyles with visible dark spot trait in the centre of tyle, seen when viewed by LM. B. Tylostyles in SEM with raphid at the right side, the mucronate tyle is seen in both photographs.
FIGURE 4 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 4. Spicule composition in Erylus trisphaerus (de Laubenfels, 1953): A. Trilobate aspidasters at different stages of development, (from left, mature, to right, early). B. Hilum detail of aspidaster. C. Chiasters I with microspined rays. D. Chiasters II, smaller and lightly microspined. E. Oxyasters, minutely spined.
FIGURE 9 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 9. Strongylacidon bermuda (de Laubenfels 1950): A. Specimen preserved in alcohol. B. Detail of densely packed tracts of strongyles forming a round mesh. C. Common strongyles in LM.
FIGURE 3 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 3. Erylus trisphaerus (de Laubenfels, 1953): A. Habit of specimen in alcohol. B. Perpendicular section of skeletal arrangement showing the cortex and radial spicular tracts. C. Orthotrienes and aspidasters in LM. D. Oxeas, aspidasters, and microxeas seen in SEM. E. Orthotriaene. F. Centrotylote microxea.
FIGURE 17 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 17. Amphimedon caribica (Pulitzer-Finali 1986). A. Specimen with massive habit, cushion shaped. B. Typical oxeas with stepped ends. C. Skeletal arrangement in irregular reticulation of plurispicular tracts. D. General view of skeletal arrangement, with cored tracts by 1–10 spicules, other fibres are spicule free.
FIGURE 14 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 14. Axinella corrugata (George & Wilson, 1919): A. Specimen with flabellate habit preserved in alcohol. B. Choanosomal arrangement in an axial trend, round meshes and short plumose tracts. C. Common spicules in LM, styles and oxea with stepped ends.
FIGURE 2. Erylus formosus Sollas, 1886 in Marine sponges (Porifera: Demospongiae) from the Gulf of México, new records and redescription of Erylus trisphaerus (de Laubenfels, 1953)
FIGURE 2. Erylus formosus Sollas, 1886: A. Cross section of skeletal arrangement showing the cortex and radial arrangement of megascleres. B. Aspidasters and centrotylote microstrongyles in LM. C. Oxeas and aspidasters. D. Aspidaster and centrotylotes microstrongyles in SEM.
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International Brain Laboratory public data
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