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28 results for “Actisecos”
FIGURE 5. Exechonella safagaensis n in Revision of the Recent species of Exechonella Canu & Bassler in Duvergier, 1924 and Actisecos Canu & Bassler, 1927 (Bryozoa, Cheilostomata): systematics, biogeography and evolutionary trends in skeletal morphology
FIGURE 5. Exechonella safagaensis n. sp. Red Sea (A‒C: paratype DPUV 2013-0001-0009, the Northern Bay of Safaga; D‒F: paratype DPUV 2013-0001-0010, the Northern Bay of Safaga; E, IPUW 7023, Jeddah). A, general view of the colony from above. Ancestrular zone is broken. B, central part of the same colony. C, lateral view of the peripheral part of the same colony showing non-damaged peristomes with flared edge and frontal processes associated with foramina. D, lateral view of the peripheral part of the colony showing non-damaged peristomes with rounded edge without spikes and lateral multiporous septula. E, primary orifice with condyles hardly visible (arrows). F, close-up of the frontal shield with foramina two of which bear pointed process. Scale bars: A = 1 mm; B‒E = 100 µm; F = 10 µm.
FIGURE 3. Exechonella reniporosa n in Revision of the Recent species of Exechonella Canu & Bassler in Duvergier, 1924 and Actisecos Canu & Bassler, 1927 (Bryozoa, Cheilostomata): systematics, biogeography and evolutionary trends in skeletal morphology
FIGURE 3. Exechonella reniporosa n. sp. Great Barrier Reef, Lizard Island (A‒F: holotype MTQ G100215). A, general view of the colony from above. B, central part of the colony showing multiporous mural septulum in left autozooid. C, proximal part of the colony with ancestrula. D, peripheral autozooid showing typical foraminal shape. E, primary orifice with condyles shown by arrows (lower part of the 'pocket' seen above the right condyle). F, close-up of adventitious kenozooid (k) with five pores, three of them having a tiny central pore. Scale bars: A = 1 mm; B‒E = 100 µm; F = 10 µm.
FIGURE 9 in Revision of the Recent species of Exechonella Canu & Bassler in Duvergier, 1924 and Actisecos Canu & Bassler, 1927 (Bryozoa, Cheilostomata): systematics, biogeography and evolutionary trends in skeletal morphology
FIGURE 9. Exechonella pumicosa Canu & Bassler, 1928. Florida (A‒D: holotype USNM 7838, Atlantic Ocean, non-cleaned colony; E: USNM 10127, Atlantic Ocean; F‒G: USNM 545922, Caribbean Sea, non-cleaned colony). A‒B, general view of holotype from above. C‒D, close-up of autozooids showing shape of primary orifice. E, general view of old abraded colony from above. F, peripheral part of non-cleaned colony with young zooid forming frontal shield (in the centre) and kenozooid (arrow). G, zooidal orifice with partially broken operculum. Kenozooid (k) is seen in the right upper corner. Scale bars: A, B, E, F = 500 µm; C, G = 200 µm; D = 100 µm.
FIGURE 4. Exechonella variperforata n in Revision of the Recent species of Exechonella Canu & Bassler in Duvergier, 1924 and Actisecos Canu & Bassler, 1927 (Bryozoa, Cheilostomata): systematics, biogeography and evolutionary trends in skeletal morphology
FIGURE 4. Exechonella variperforata n. sp. Great Barrier Reef, Lizard Island (A, B: holotype MTQ G100217; C‒F: paratype MTQ G100218). A, general view of the colony from above. Ancestrular zone is overgrown by calcareous algae. B, autozooid showing various foraminal shapes. C, general view of the colony fragment from above ('gaps' between zooids are clearly seen; peristome of left zooid bears two spikes). D, lateral view of the same fragment showing marginal pores arranged in 2‒3 rows and multiporous septula. E, primary orifice with condyles (arrows) visible. F, distolateral view of the frontal shield with foramina, two of which bear short pointed process. Scale bars: A = 1 mm; B‒ F = 100 µm.
FIGURE 2 in Revision of the Recent species of Exechonella Canu & Bassler in Duvergier, 1924 and Actisecos Canu & Bassler, 1927 (Bryozoa, Cheilostomata): systematics, biogeography and evolutionary trends in skeletal morphology
FIGURE 2. Exechonella erinacea (Canu & Bassler, 1929). Philippines, Jolo Island (A‒D: lectotype USNM 7967). A, B, general view of the colony from above. C, three autozooids showing opercula and a shape of the primary orifice. Kenozooids with pores pointed by arrows. D, close-up of two zooids showing the shape of foraminal luminae and a condyle (arrowhead). Scale bars: A, B = 500 µm; C, D = 200 µm.
FIGURE 20. Exechonella elegantissima n in Revision of the Recent species of Exechonella Canu & Bassler in Duvergier, 1924 and Actisecos Canu & Bassler, 1927 (Bryozoa, Cheilostomata): systematics, biogeography and evolutionary trends in skeletal morphology
FIGURE 20. Exechonella elegantissima n. sp. (A‒E: MTQ G100214, Great Barrier Reef, Lizard Island; F, G, holotype: DPUV 2012-0006-0001, Northern Bay of Safaga). A, general colony view from above. B, C, group of autozooids showing details of peristomes and frontal shields. Two kenozooids shown by arrows in C. D, E, details of primary orifice and peristome. Condyle shown by arrow F, G, lateral view of peripheral colony part showing shape of peristomes and narrow multiporous mural septula. Scale bars: A = 1 mm; B‒G = 100 µm.
FIGURE 1 in Revision of the Recent species of Exechonella Canu & Bassler in Duvergier, 1924 and Actisecos Canu & Bassler, 1927 (Bryozoa, Cheilostomata): systematics, biogeography and evolutionary trends in skeletal morphology
FIGURE 1. Exechonella ampullacea Hayward & Ryland, 1995. Great Barrier Reef, Heron Island (A, C, E: holotype QM G304975; B, D, F: paratype QM G304977). A, B, general view of the colony from above. C, cleaned frontal shield showing the shape of foramina. D, condyle with a 'pocket'; E, lateral view of the holotype specimen showing mural septula and kenozooid (arrow); F, broken autozooid showing distal transverse wall with communication pores, right condyle with a 'pocket' (arrowhead), distal, proximal and lateral walls of peristome and underside of broken frontal shield. Marginal pores with centrally perforated cuticular plate are seen together with more distal communication pores (their cuticular plate is completely or partially destroyed), and cross-sectioned foramen of the frontal shield (seen above). Scale bars: A, B = 1 mm; C, F = 100 µm; D = 30 µm; E = 500 µm.
FIGURE 15 in Revision of the Recent species of Exechonella Canu & Bassler in Duvergier, 1924 and Actisecos Canu & Bassler, 1927 (Bryozoa, Cheilostomata): systematics, biogeography and evolutionary trends in skeletal morphology
FIGURE 15. Exechonella brasiliensis Canu & Bassler, 1928. Atlantic Ocean, Brazil (A‒E: holotype USNM 8547; F‒H: USMN 8582). A, C, D, general view of holotype from above. B, close-up of autozooid, showing shape of primary orifice; E, close-up of frontal shields with two foramina bearing avicularia (arrowheads). F, view of central part of colony from above (some lateralmost foramina with avicularia shown by arrows). G, close-up of autozooid showing shape of primary orifice and lateralmost foramina with avicularium (arrowhead). H, close-up of lateralmost foramina with avicularium. Scale bars: A, B, E = 100 µm; C, D, G = 200 µm; F = 500 µm; H = 50 µm.
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