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676 results for “Cheilostomata”
Fig. 1 in New and little-known Cheilostomata (Bryozoa, Gymnolaemata) from the NE Atlantic
Fig. 1. Notoplites saojorgensis sp. nov. (MNHN 4163, holotype). A. Optical image of colony showing the porcelain white zooecia. B. Overview of colony showing several internodes and branch bifurcations. C. Proximal part of the colony with numerous, closely joined rhizoids emanating from proximal and abfrontal zooids, forming supporting stalks. D. Abfrontal side of internode with two rhizoids. E. Autozooids at branch bifurcation; note the basal part of the greatly enlarged spine at the base of the scutum (lower arrow) and the single spine of normal size in the median zooid at the bifurcation point (upper arrow). F. Close-up of autozooid with distolateral and proximal avicularium. G. Ovicellate zooids; note the proximomedian, acutely triangular window in the ooecium. Scale bars: A, B = 1 mm; C, D = 200 µm; E, G = 100 µm; F = 50 µm.
Fig. 4. Myriapora bugei d in New and little-known Cheilostomata (Bryozoa, Gymnolaemata) from the NE Atlantic
Fig. 4. Myriapora bugei d'Hondt, 1975. A. Colony fragment with closely spaced branches bifurcating at a 90° angle from the main branch (MNHN IB-2013-3, lectotype). B. Branch segment with one whorl of fertile zooecia at top, identified by the larger dimorphic orifice and the radial arrangement of pseudopores (MNHN IB-2013-2, paralectotype). C. Distal branch with early ontogenetic autozooecia (MNHN 7481, paralectotype). D. Close-up of an autozooecial orifice (MNHN IB-2013-2, paralectotype). E. The dimorphic orifice of a maternal zooecium (MNHN IB-2013-2, paralectotype). Scale bars: A = 2 mm; B = 200 µm; C = 300 µm; D = 50 µm; E = 100 µm.
Fig. 3 in New and little-known Cheilostomata (Bryozoa, Gymnolaemata) from the NE Atlantic
Fig. 3. Hippomenella mucronelliformis (Waters, 1899). A. Overview of autozooids in the lectotype (MM 3780); note the extremely long and slender mandibles of the small avicularia. B. Early astogenetic part of the paralectotype (MMF 42297), including the zooid interpreted by Brown (1949) to be the ancestrula (at lower left) but which is here considered as the first autozooid; note that the avicularia in early astogenetic zooids are proximally positioned and directed. C. Autozooids and an ovicellate zooid at the colony margin; note that the forming endooecium is not perforated by pseudopores and that the suboral mucro is absent in early ontogenetic zooids, forming only during later ontogeny (NHMUK 1947.8.12.1; photo: M.E. Spencer Jones). D. Close up of orifice (lectotype, MM 3780). E. Interior frontal shield with the umbonuloid ring-scar framed by areolar pores (NHMUK 1947.8.12.1; photo: M.E. Spencer Jones). F. Ovicellate zooid; note the superficial pits on the distolateral endooecium (NHMUK 1947.8.12.1; photo: M.E. Spencer Jones). G. Lateral view of a zooid (distal is to the right), showing five multiporous pore plates in the vertical wall (NHMUK 1947.8.12.1; photo: K.J. Tilbrook). Scale bars: A = 400 µm; B, C = 200 µm; D = 50 µm; E, F, G = 100 µm.
Fig. 16 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 16. Geographic distribution of the species of Atlantisina gen. nov., Bathycyclopora gen. nov. and Calvetopora gen. nov.; names in white represent sites on or close to the continental shelf, whereas names in black indicate offshore seamount and island sites. Abbreviations: A.ac = Atlantisina acantha gen. et sp. nov.; A.at = Atlantisina atlantis gen. et sp. nov.; A.go = Atlantisina gorringensis gen. et sp. nov.; A.in = Atlantisina inarmata gen. et sp. nov.; A.li = Atlantisina lionensis gen. et sp. nov.; A.me = Atlantisina meteor gen. et sp. nov.; A.se = Atlantisina seinensis gen. et sp. nov.; A.tr = Atlantisina tricornis gen. et sp. nov.; B.su = Bathycyclopora suroiti gen. et sp. nov.; B.vi = Bathycyclopora vibraculata gen. et comb. nov.; C.in = Calvetopora inflata gen. et comb. nov.; C.ot = Calvetopora otapostasis gen. et sp. nov.; C.sp. = Calvetopora sp.
Fig. 13 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 13. Calvetopora inflata (Calvet, 1906) gen. et comb. nov., Gulf of Cádiz, holotype (MNHN- IB-2008-2470). A. Overview of the periancestrular part of the colony. B. Close-up of the ancestrula and the first two autozooids. C. Maternal autozooids at the colony growth margin. D. Lateral view of an ovicellate zooid. E. Distal view of the colony growth margin showing the kenozooidal origin of the ooecia. F. Close-up of an avicularium. Scale bars: A, C = 500 µm; B, D = 200 µm; E = 300 µm; F = 50 µm.
Fig. 7 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 7. Atlantisina lionensis gen. et sp. nov., Lion Smt, paratype (MNHN-IB-2014-67). A. Colony overview. B. Orifice and slightly damaged ooecium. C. Ovicellate zooids at the colony growth margin. D. Close-up of the suboral crest. Scale bars: A = 500 µm; B, D = 50 µm; C = 100 µm.
Fig. 6 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 6. Atlantisina tricornis gen. et sp. nov. A. Early colony development; note the presence of the maternal 5th-generation autozooid at centre right (paratype MNHN-IB-2014-64, N Iberian slope). B. Ovicellate zooids (paratype MNHN-IB-2014-65, N Iberian slope). C. Close-up of orifice (paratype MNHN-IB-2014-65, N Iberian slope). D. Lateral view of suboral crests (holotype MNHN-IB-2014-60, N Iberian slope). E. Colony from Galicia Bank forming biserial ribbons; note the relatively broad ooecia (MNHN-IB-2014-279). F. Colony from the W Iberian slope (photo taken by J. Souto); note the bifid tips in some of the mucrones (zooid at lower left) while other suboral crests (zooid at top right) have a simple trident (MNHN-IB-2008-7194). Scale bars: A, E–F = 300 µm; B, D = 200 µm; C = 50 µm.
Fig. 5 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 5. Atlantisina seinensis gen. et sp. nov., Seine Smt, holotype (MNHN-IB-2014-57). A. Autozooids and ovicellate zooids. B. Lateral view showing the vertical dimensions of the suboral umbones. C. Orifice. D. Ooecium. E. Early ontogenetic zooid with a fully formed ooecium. Scale bars: A–B = 200 µm; C–D = 50 µm; E = 100 µm.
Fig. 4 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 4. Atlantisina inarmata gen. et sp. nov. Canary Islands. A. Overview of holotype, optical image (MNHN-IB-2014-53). B. Several autozooids and ovicellate zooids (paratype MNHN-IB-2014-55). C. Close-up of the orifice and the deeply pitted ooecium (paratype MNHN-IB-2014-55). D. Periancestrular region (paratype OLL 2016/140). E. An autozooid at the colony growth margin (paratype MNHN-IB-2014-54). F. An autozooid with a borehole in the frontal shield (centre), and one with an intramural bud (at right), indicated by the presence of a secondary orifice rim (paratype MNHN- IB-2014-54). Scale bars: A = 500 µm; B = 300 µm; C = 50 µm; D = 200 µm; E, F = 100 µm.
Fig. 12 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 12. Baythycyclopora suroiti gen. et sp. nov., Atlantis Smt. A. Overview of a partly damaged colony (paratype, OLL 2016/149). B. Ovicellate zooids (paratype, MNHN-IB-2014-77). C. Close-up of an orifice (paratype, MNHN-IB-2014-77). D. Ancestrula and the first two autozooids (paratype, OLL 2016/126). E. Interzooidal avicularium; note the single communication pore per neighbouring zooid as well as the extensive cryptocystal calcification surrounding it and the thin peripheral band of gymnocyst (paratype, MNHN-IB-2014-77). F. Close-up of adventitious avicularium (paratype, MNHN- IB-2014-77). G. Lateral view of oral spines (holotype, MNHN-IB-2014-73). Scale bars: A = 500 µm; B, D–E, G = 200 µm; C, F = 50 µm.
Fig. 3 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 3. Atlantisina meteor gen. et sp. nov., Great Meteor Bank A. Overview of holotype (OLL 2016/130a). B. Several autozooids and ovicellate zooids (holotype OLL 2016/130a). C. Orifice (paratype MNHN- IB-2014-50). D. Ooecium (holotype OLL 2016/130a). E. Periancestrular region (SMF 40.040). F. Unbleached autozooids with typical whip-like spines (paratype OLL 2016/133a). Scale bars: A = 1 mm; B = 300 µm; C = 50 µm; D = 100 µm; E–F = 200 µm.
Fig. 1 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 1. Morphological characteristics of Atlantisina gen. nov. A. The kenozooidal ooecium of Atlantisina lionensis gen. et sp. nov. in lateral view (paratype MNHN-IB-2014-67), showing the broad band of ectooecium and the centrally exposed endooecium; note that the suboral crest is formed by smooth gymnocyst whereas the remaining frontal shield is cryptocystidean. B. Distal view of an autozooid of Atlantisina meteor gen. et sp. nov. showing two distolateral communication pores and the slightly raised central pore from which the ooecium is budded (paratype MNHN-IB-2014-50); note the broad band of cryptocyst bounding the septular pores, and that the remaining parts of the distolateral vertical walls and orifice are entirely gymnocystal. C. Oral region of an ovicellate zooid of Atlantisina atlantis gen. et sp. nov. (paratype MNHN-IB-2014-49), showing the contact between the cryptocystidean frontal shield and the gymnocystal distal part of the zooecium; note that the frontal shield is superpositioned on the condyles (white arrow) and meets the distolateral vertical walls in a sinusoidal suture (black arrow). D. Initial stages of zooid formation with the lateral walls being partly broken, showing the large basal pore chambers in Atlantisina atlantis gen. et sp. nov. (paratype OLL 2016/123). E. Slightly oblique view of the ancestrula of Atlantisina tricornis gen. et sp. nov. (paratype MNHN-IB-2014-64); note the simple tatiform morphology, the absence of a cryptocyst, and the slightly restricted oral region (top). Scale bars: A–B, D = 100 µm; C, E = 50 µm.
Fig. 11 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 11. Bathycyclopora vibraculata (Calvet, 1931) gen. et comb. nov., Azores. A. Overview of lectotype (MOM INV-22480a). B. Periancestrular region (MOM INV-22480a). C. Zooids at the colony growth margin and interzooidal avicularia (paralectotype, MOM INV-22480b). D. An ovicellate zooid and an interzooidal avcularium (paralectotype, MOM INV-22480b). E. Lateral view of an ooecium showing the thin marginal band of ectooecium (MOM INV-22480a). F. Close-up of orifice (MOM INV-22480a). Scale bars: A = 1 mm; B = 300 µm; C = 500 µm; D = 200 µm; E = 100 µm; F = 50 µm.
Fig. 2 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 2. Atlantisina atlantis gen. et sp. nov., Atlantis Smt. A. Overview of colony growing on a stylasterid skeleton; note the biserial-branching growth (paratype MNHN-IB-2014-47). B. Several autozooids and ovicellate zooids (paratype MNHN-IB-2014-49). C. Close-up of orifice and the base of a severed ovicell protruding from the distal communication pore (paratype MNHN-IB-2014-49). D. Ooecium (OLL 2016/127). E. Periancestrular region (paratype OLL 2016/123). F. Ancestrula and first-generation autozooid (paratype OLL 2016/123). Scale bars: A = 1 mm; B = 500 µm; C–D = 50 µm; E = 300 µm; F = 100 µm.
Fig. 9 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 9. Atlantisina gorringensis gen. et sp. nov., Gorringe Bank. A. Overview of holotype (MNHN- IB-2014-70). B. Periancestrular region, the constricted oral region of the partly overgrown ancestrula is to the left (paratype OLL 2016/147). C. Two ovicellate zooids, the lower one with a well-preserved suboral crest (MNHN-IB-2014-70). D. The same zooid in lateral view (MNHN-IB-2014-70). E. Closeup of orifice (OLL 2016/147). Scale bars: A = 500 µm; B = 300 µm; C–D = 100 µm; E = 50 µm.
Fig. 8 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 8. Atlantisina lionensis gen. et sp. nov. Intraspecific variability in the morphology of the suboral crest. Scale bar: 200 µm.
Fig. 14 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 14. Calvetopora otapostasis gen. et sp. nov., Atlantis Smt. A. Overview of the holotype (MNHN- IB-2014-78). B. Close-up of an ooecium and the suboral avicularia (holotype MNHN-IB-2014-78). C. Slightly oblique view of an autozooid at the growth margin showing the communication pores in the lateral walls as well as marginal areolar pores (black arrow) and the roughly crescentically arranged pseudopores (white arrows) in the frontal shield (paratype MNHN-IB-2014-280). D. Close-up of orifice; note that the condyles are so short that usually only one can be seen (paratype OLL 2016/153). E. Ancestrula and early astogenetic autozooids (paratype MNHN-IB-2014-81). F. Interior frontal shield showing the lateral areolar pores and the central pseudopores (paratype OLL 2016/153). Scale bars: A = 500 µm; B, D, F = 100 µm; C, E = 200 µm.
Fig. 15 in New Cheilostomata (Bryozoa) from NE Atlantic seamounts, islands, and the continental slope: evidence for deep-sea endemism
Fig. 15. Calvetopora sp., Great Meteor Bank, OLL 2016/157. A. Overview of colony fragment. B. Closeup of orifice and avicularia. Scale bars: A = 300 µm, B = 100 µm.
Fig. 11 in Diversity and distribution of adeonid bryozoans (Cheilostomata: Adeonidae) in Japanese waters
Fig. 11. Adeonellopsis pentapora Canu & Bassler, 1929. A. Left, colony in Döderlein Collection (MZS 2-1); right, colony collected by NSMT (NSMT-TeS22). B. Colony on hydroid stalk, from Sagami Bay (NSMT-TeS20). C. Distal end of branch showing young autozooids with multiporous, denticulate spiramen (NSMT-Te761). D. Young autozooids with umbonate processes on frontal shield (NSMT- Te764). E. Mature autozooids with small suboral and other frontal avicularia (NSMT-Te761). F. Old autozooids, showing deeply immersed spiramen and orifices (NSMT-Te762). A–B = optical photographs; C–F = SEM images. Scale bars: A = 3 mm; B = 2 mm; C–D, F = 200 μm; E = 250 μm.
Fig. 8 in Diversity and distribution of adeonid bryozoans (Cheilostomata: Adeonidae) in Japanese waters
Fig. 8. Adeonellopsis japonica (Ortmann, 1890). A. Distal end of branch just starting to bifurcate, showing young autozooids and gonozooids (NSMT-BryR277). B. Enlargement of young gonozooids, showing peripheral rim with rows of granulation perpendicular to margin, and large multiporous spiramen (NSMT-BryR277). C. Autozooids in middle of branch, showing immersed spiramen (NSMT- Bry R 193). D. Basal part of branch, showing autozooids, and some kenozooids with closed orifice (NSMT-BryR36). E. Young gonozooids, showing distinct marginal pores and multiporous spiramen (NSMT-Te758). F. Distal end of branch, showing autozooid formation (NSMT-Te758). SEM images. Scale bars: A, C = 1 mm, B, D–E = 300 μm; F = 500 μm.
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