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16 results for “Hemicyclopora”
FIG. 15 in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 15. — Scutocyclopora dentata (López de la Cuadra & García-Gómez, 1991) n. comb.: A, one non-ovicellate and three ovicellate zooids; B, two non-ovicellate zooids with high, indented peristome; C, E, ovicellate zooid with nodular frontal shield and endooecium and orifice edged by a vizor on the ovicell and a collar with pseudo-spines; D, non-ovicellate zooid with indented collar, orifice with internal arch ending in step-shaped condyles, and small marginal pores; F, young stage of a colony with ancestrula. Origin of specimens: A, Italy, Campania, Palinuro Cape, Scaletta Cave, 47 m; B, E, France, Port-Cros, Bagaud Cave, 5 m; C, France, Provence, Trémies cave, 6 m; D, F, Italy, Sicily, off Avola, 100 m. Scale bars: A, C, 200 µm; B, D, E, 100 µm; F, 300 µm.
FIG. 13 in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 13. — Hemicyclopora sp. 2: A, colony on a fragment of coral skeleton; B, same colony, zooids showing a typical profile with a great distal thickness, a terminal orifice, a vertical distal wall, and a terminal, highly recumbent ovicell; C, frontal view of non-ovicellate and ovicellate zooids. Origin: Asturias, Thalassa X301; MNHN-IB-2017-1559. Scale bars: A, 1 mm; B, C, 400 µm.
FIG. 10 in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 10. — Distal part of ovicellate and non-ovicellate zooids, and ancestrulae, all at the same scale: A-C, Hemicyclopora neatonensis n. sp.; D-F, H. hexaspinae n. sp.; G- I, Escharella similis Ramalho, Rodríguez-Aporta & Gofas, 2022. Drawings from SEM pictures and examination under stereomicroscope. Origin: A-C, Sicily; D-F, Provence; G-I, Alboran Sea. Scale bar: 200 µm.
FIG. 12. — Hemicyclopora hexaspinae n in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 12. — Hemicyclopora hexaspinae n. sp.: A, ancestrula, note the large size of the cryptocyst; B, ancestrula and daughter zooids; C, autozooid with a tubule budded from a distolateral pore-chamber; D, ancestrula with three successive daughter zooids, the third one with a basal tubular part budded by the ancestrula; E, same ancestrula and zooids, sketch from stereomicroscopic examination: darkening by Mn-Fe oxides increasing from the youngest zooid to the ancestrula attesting to the very slow growth in confined dark caves. Origin: A, C-E, Provence, 3PP Cave; B, Ustica Island, Apollo Bank. Scale bars: A, 50 µm; B, 300 µm; C-E, 100 µm.
FIG. 9 in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 9. — "Hemicyclopora" pytheasi n. sp.: A, colony with many ovicells and its ancestrula; another ancestrula with a single daughter zooid, both marked (a); B, ovicellate zooids with converging oral spines; C, ovicellate and non-ovicellate zooids, with a small zooid regenerated inside a broken cystid; D, distal part of two ovicellate zooids and an interzooidal porous kenozooid; E, juvenile colony with ancestrula; F, distal part of a non-ovicellate zooid, orifice with typically convex proximal edge; G, inner side of an orifice showing the lyrula-like suboral umbo and three basal pores of spines (partly visible on the right side). Origin: Atlantic, Armorican margin; Biaçores Stn 259; A, B, paratype PMC-B33.5.52021; C, D, F, G, paratype MNHN-IB-2017-775; E, paratype MNHN-IB-2017-777. Scale bars: A, 1 mm; B, C, E, 200 µm; D, 100 µm; F, G, 50 µm.
FIG. 6. — Hemicyclopora celtica n in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 6. — Hemicyclopora celtica n. sp.: A, colony with clustered ovicells; B, small portion of a colony, note the occurrence of six, seven or eight spines in nonovicellate zooids, and 6 spines in ovicellate zooids; C, non-ovicellate and ovicellate zooids, all with six spines, ovicells associated with a distal autozooid; D, nonovicellate zooids with small marginal pores, subterminal orifice edged by six spines, prominent condyles and markedly convex proximal edge; E, F, non-ovicellate and ovicellate zooids, note the granular frontal shield with tiny marginal pores, the terminal orifice of the non-ovicellate zooid with eight prominent basal parts of spines, and ovicells with endooecium formed by the distal autozooid; G, H, frontal view of two orifices, with eight spines and a moderately convex proximal edge (G) and six spines and a triangular proximal edge (H); I, inner side of an orifice with smooth surface and basal pores of spines. Origin: Armorican Margin, A, C, D, Thalassa Z398, paratype PMC.B35.2021; B, E-I, Thalassa Z435, paratype MNHN-IB-2017-780. Scale bars: A, 1 mm; B, 400 µm; C, 200 µm; D-F, G-I, 100 µm.
FIG. 5 in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 5. — Hemicyclopora discrepans (Jullien in Jullien & Calvet, 1903): A, colony with ovicellate zooids bearing six, seven, or eight oral spines; B, non-ovicellate zooid with eight spines, primary orifice with internal arch and protruding condyles, and granular frontal shield; C, three ovicellate zooids with six spines and ovicells inserted between the base of distal autozooids; D, zooids with long, curved spines, large porous area lateral to orifice and ovicells attached to distal maternal wall, one under construction; E, orifice with triangular, down-curved condyles, concave proximal edge with a narrow rim of gymnocyst; F, lateral view of the distal part of an ovicellate zooid with eight spines, large marginal pores and the ovicell with the basal kenozooid; G, two zooids, one ovicellate, both with eight spines, frontal shield and endooecium with pointed granules. Origin: A, B, F, G, Alboran Sea, Balgim DW132, 170 m; C, D, E, Atlantic, Gorringe Bank, Seamount 1 DW5, 180 m. Scales bars: A, 400 µm; B, F, 100 µm; C, D, G, 200 µm; E, 50 µm.
FIG. 11. — Hemicyclopora hexaspinae n in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 11. — Hemicyclopora hexaspinae n. sp.: A, ovicellate and non-ovicellate zooids at the edge of a small colony, with frontal shield bulged and granular; B, C, ovicellate zooids: terminal ovicells with six curved spines, attached to maternal distal wall and lying on a small kenozooid responsible for ovicell formation; D, colony edge with six ovicells: two fully grown and four under construction from a basal kenozooid; E, ovicellate zooid with thick bases of spines; F, orifice of non-ovicellate zooid: six basal parts of spines, concave proximal edge and prominent condyles; G, shape of the oral spines in a non-ovicellate zooid:. Origin: A, B, F, G, paratype MNHN-IB-2017-772, Provence, 3PP Cave; C, paratype MNHN-IB-2017-773, Provence, Cape Morgiou Cave; D, paratype PMC.B29.8.11.2020; Ustica Is., Apollo Bank; E, Atlantic, Balgim DR49. Scale bars: A, D, 300 µm; B, E, G, 100 µm; C, 200 µm; F, 50 µm.
FIG. 7 in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 7. — Escharella similis Ramalho, Rodríguez-Aporta & Gofas, 2022: A, edge of colony with five ovicellate zooids; B, non-ovicellate zooids with eight oral spines and a triangular proximal umbo; C, orifice of non-ovicellate zooid showing the lyrula-like inner bump and the proximal peristomial umbo in vertical view; D, two zooids, one with a terminal ovicell associated to a tiny basal kenozooid and orifice with a lyrula-like bump; E, distal part of an ovicellate zooid with 8 spines, a triangular peristomial umbo, and the orifice of the ovicell in an upper position; F, orifice of a non-ovicellate zooid with a low inner protuberance and step-shaped condyles. Origin: A, B, C, E, F, Alboran Sea, Balgim DW132; D, Atlantic, Gulf of Cadiz, Balgim DR42. Scale bars: A, 400 µm; B, D, 200 µm; C, E, F, 100 µm.
FIG. 14 in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 14. — Oral spines in a non-ovicellate zooid of Hemicyclopora polita (Norman, 1864): A, outside view of four spines with tall bases; B, inside view of the orifice area showing four pores corresponding to the opening of spines into the coelom and the distal part of the umbonuloid frontal shield. Ancestrula and early astogeny in the genera Hemicyclopora and Scutocyclopora n. gen.: C, H. polita, D, S. dentata n. comb, Origin: A-C, NE Atlantic, Armorican Margin, 1050 m, R/V Thalassa Z435; D, Ionian Sea, Sicily, off Avola, 100 m. Scale bars: A, B, 100 µm; C, D, 200 µm.
FIG. 4 in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 4. — Hemicyclopora sp. 1: A, lateral view of ovicellate and non-ovicellate zooids with granular frontal shield, marginal pores and basal pore chambers, note the structure of the orifices and the ovicells with vizor, recumbent on a basal kenozooid; B, frontal view of an ovicellate zooid with typical features; C, ancestrula with 12 spines. Origin: Azores; Biaçores Stn 145-146; MNHN-IB-2017-1558. Scale bars: A, B, 200 µm; C, 100 µm.
FIG. 8 in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 8. — "Escharella" massiliana n. sp.: A, zooids of the colony edge with hummocky frontal shield and three terminal, recumbent ovicells; B, lateral view of an ovicellate zooid, note the small basal kenozooid and the large marginal pores; C, E, F, G, edge of the same colony as A, with different stages in the ovicell construction involving a small basal kenozooid, note the thickness of the proximal edge of the orifice; D, ancestrula and periancestrular zooids. Origin: A, C, E-G, Marseille, Planier canyon, holotype MNHN-IB-2017-774; B, D, Calvi, paratype PMC. B36. 5.5.2021. Scale bars: A, B, C, D, 200 µm; E, F, 50 µm; G, 100 µm.
FIG. 2. — Hemicyclopora neatoniensis n in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 2. — Hemicyclopora neatoniensis n. sp.: A-C, general aspect of the colony with ovicellate and non-ovicellate autozooids and rare interspersed kenozooids. Note the variability in the size and shape of autozooids and in the nature of the ovicells; D, close-up of some zooids with the typical peristomes; E, non-ovicellate autozooids; F, an ovicellate autozooids with four oral spines. Origin: A-F, holotype, PMC. B34.1.4.2021a; Sicily, Gulf of Noto, 78 m; E, paratype, MNHN- IB-20174-769, Gulf of Noto, 45 m. Scale bars: A, C, 1 mm; B, D, 500 µm; E, F, 200 µm.
FIG. 3. — Hemicyclopora neatoniensis n in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 3. — Hemicyclopora neatoniensis n. sp.: A, cluster of autozooids, several with ovicells associated with distal zooids smaller or developing teratologic morphologies; B, ovicell complex formed by a maternal autozooid and a distal kenozooid; C, ovicellate zooid with a very broad ovicell associated with a distal nonovicellate zooid. Note the dimorphic orifices with eight, occasionally seven spines, and the condyles morphology; D, contiguous autozooids with fused ovicells; E, polygonal porous kenozooid at the colony periphery; F, ancestrula with three daughter zooids exposing their basal pore chambers; Origin: Sicily, Gulf of Noto; A-E, PMC. B34.1.4.2021b2; F, PMC. B34.1.4.2021b1. Scale bars: 500 µm.
FIGURE 10. Hemicyclopora admirabilis n in Preliminary account on the bryozoans of the Alboran platform (Western Mediterranean), with description of two new species
FIGURE 10. Hemicyclopora admirabilis n. sp. (Holotype: MNCN 25.03/4307). A. General view of the colony, growing on another bryozoan (Adeonellopsis distoma), showing fertile zooids with six oral spines and infertile zooids with eight spines. B. Detail of some zooids, one fertile zooid with complete ovicell and another at the initial stage of development (arrow). C. Detail of two fertile zooids with a complete kenozooidal ovicell and another at the initial stage of development (arrow). D. Detail of an orifice showing eight oral spines and a pair of condyles. Scale bars: A, 300 µm; B, C, 350 µm; D, 80 µm.
FIG. 1. — A, B in On some "Hemicyclopora" Norman, 1894 and "Escharella" Gray, 1848 species (Bryozoa, Cheilostomatida) from the Atlantic-Mediterranean region. Re-examination of their generic status and description of new species and a new genus
FIG. 1. — A, B, original figures of Lepralia multispinata Busk, 1861, from Madeira; part of colony with eight non-ovicellate zooids (A), distal part of a non-ovicellate zooid (B) illustrating the bases of six spines, the orifice shape and the proximal peristomial thickening; C, part of the type specimen of Lepralia multispinata (Busk collection 99.7.1.1802), with ancestrula and 11 non ovicellate zooids, photo courtesy of Mary Spencer Jones; D, E, Hemicyclopora multispinata (Busk, 1861) from Madeira, figured by Norman (1909, figs 6-7), ovicellate and non-ovicellate zooids, note the long spines and the orifice with a convex proximal edge of two zooids (D), and the large spatulate avicularia (E); F, G, Bathycyclopora suroiti Berning, Harmelin & Bader, 2017. Origin: Atlantis Seamount, RV Suroit, Seamount 2, DW258, derivative of figures 12G and 12E (both SEM photos by JGH) in Berning et al. (2017). Scale bars: F, G, 200 µm.
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