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106 results for “Cheilostomatida”
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 4 in Revision of the European species of the genus Hincksina Norman, 1903 (Bryozoa, Cheilostomatida, Flustridae)
FIGURE 4. Hincksina neptuni (Jullien in Jullien & Calvet, 1903) n. comb. A. Overview of lectotype with auto- and ovicellate zooecia (MOM INV-22462). B. Slightly oblique view on two autozooids (MNHN IB-2008-1999). C. Oblique view on the two fan shaped, oral spines (top), the distalmost pair of mural spines proximal to these (centre), and two pairs of more proximally positioned mural spines (bottom) (MNHN IB-2008-1999). D. Incompletely developed zooids at colony growth margin, note the relatively thin vertical zooecial margins from which the mural and oral spines will develop by epithelial folding during later ontogeny. E. Ooecium (lectotype, MOM INV-22462). F. Avicularia with mandibles still in place (lectotype, MOM INV-22462). Scale bars: A, D, 200 µm; B, F, 100 µm; C, E, 50 µm.
FIGURE 5 in Revision of the European species of the genus Hincksina Norman, 1903 (Bryozoa, Cheilostomatida, Flustridae)
FIGURE 5. Hincksina alice (Jullien in Jullien & Calvet, 1903) n. comb. A. Overview of lectotype (MOM INV-22545); note the differences in mural spine thickness between zooids. B. Auto- and ovicellate zooids (lectotype MOM INV-22545). C. Close-up of autozooid (MNHN IB-2008-1996). D. Periancestrular area with early astogenetic zooids having simple cylindrical and later bifid mural spines before fully developed spines appear, "a" = ancestrula (MNHN IB-2008-4009). E. Two ooecia, note also the unjointed oral and mural spines with their broad bases (MNHN IB-2008-1996). F. Avicularia, note the subrounded lucida in the lower side of the mandible (MNHN IB-2008-1996). Scale bars: A, D, 200 µm; B, 100 µm; C, E, F, 50 µm.
FIGURE 3 in Revision of the European species of the genus Hincksina Norman, 1903 (Bryozoa, Cheilostomatida, Flustridae)
FIGURE 3. Hincksina sceletos (Busk, 1858). A. Overview of lectotype, the autozooids having relatively thin mural spines (NHMUK 1899.7.1.1144). B. Close-up of autozooid; note the flattened, fan-shaped oral spines (lectotype, NHMUK 1899.7.1.1144). C. Two avicularia, the lower one showing the interior mandible with its muscle attachment scar and median lucida (lectotype, NHMUK 1899.7.1.1144). D. Ooecium (NHMUK 1908.3.23.1). E. Mural spines in lateral view (lectotype, NHMUK 1899.7.1.1144). F. Auto- and ovicellate zooids (NHMUK 1908.3.23.1). G. Several autozooids with thicker mural spines and the flattened oral spines viewed at a slightly oblique angle (NHMUK 1908.3.23.1). H. Periancestrular area showing the transition from thin, cylindrical, monomorphic spines in early astogenetic zooids to fully differentiated oral and mural spines in adult zooids (NHMUK 1908.3.23.1). Scale bars: A, F, H, 400 µm; B, C, 100 µm; D, E, 50 µm; G, 200 µm.
FIGURE 2. Hincksina synchysia n in Revision of the European species of the genus Hincksina Norman, 1903 (Bryozoa, Cheilostomatida, Flustridae)
FIGURE 2. Hincksina synchysia n. sp., holotype (MNHN-IB-2017-782), note that fragments of other organisms cover the surface of this unbleached specimen, some of which may be confused with oral or mural spines. A. Autozooids. B. Oblique view on auto- and ovicellate zooids to show the inclined rostra in some of the avicularia. C. Close-up of two autozooids and an avicularium, note the thin band of nodular cryptocyst in the lower left of the central zooid. D. Two zooids with ovicells produced by the distal avicularium at the far left, the three remaining ovicells are produced by the proximal gymnocyst of the distal autozooid, and one avicularium with a relatively pointed tip at lower right; note the nodular cryptocystal rim in the lower left of the central zooid. E. Close-up of an ovicell. Scale bars: A, B, D, 200 µm; C, E, 100 µm.
FIGURE 1 in Revision of the European species of the genus Hincksina Norman, 1903 (Bryozoa, Cheilostomatida, Flustridae)
FIGURE 1. Hincksina flustroides (Hincks, 1877). A. overview of lectotype (NHMUK 2016.6.9.2). B. Oblique view on autozooids (NHMUK 1963.3.24.2), note the presence of bifid as well as broad and slender mural spines, and the jointed spines bases (dark areas between mural rim and calcified spines). C. Close-up of avicularium (lectotype, NHMUK 2016.6.9.2). D. Ovicellate zooids (NHMUK 1963.3.24.2). Scale bars: A, 500 µm; B, 100 µm; C, 50 µm; D, 200 µm.
FIGURE 5. Reteporella watersi Nordgaard, 1907. ZIN 4 in New species and new records of Reteporella (Bryozoa: Cheilostomatida) from Greenland waters
FIGURE 5. Reteporella watersi Nordgaard, 1907. ZIN 4/50741. A. Frontal side of colony; autozooids organized in 3–5 series between fenestrulae. B. Abfrontal surface of colony. C. Group of zooids; triangular condyle and denticulation of primary orifice is evident in the autozooid on the bottom left. D. Distal part of zooid, showing denticulate distal margin of orifice and oval, proximolaterally directed suboral avicularium. E. Autozooid with ovicell, which has well-developed labellum and an elongate median fissure. F. Orifice, showing straight proximal margin. Scale bars: A, 1 mm; B, C, E, 300 μm; D, F, 100 μm.
FIGURE 3 in New species and new records of Reteporella (Bryozoa: Cheilostomatida) from Greenland waters
FIGURE 3. General colony view of Reteporella vitta n. sp., holotype, ZIN 1/50743. A, Frontal view of colony; B, view into funnel. Scale bar: 5 mm.
FIGURE 4. Reteporella vitta n in New species and new records of Reteporella (Bryozoa: Cheilostomatida) from Greenland waters
FIGURE 4. Reteporella vitta n. sp., holotype, ZIN 1/50743. A. Fragment of colony, frontal surface. B. Abfrontal surface of colony. C. Orifice (condyle visible on the right) and suboral avicularium. D, E. Autozooids with ovicells. F. Frontal view of suboral avicularium. G. Avicularium on the abfrontal surface of colony. Scale bars: A, 1 mm; B, 400 μm; C, 100 μm; D, E, 500 μm; F, G, 50 μm.
FIGURE 2. Reteporella obscura n in New species and new records of Reteporella (Bryozoa: Cheilostomatida) from Greenland waters
FIGURE 2. Reteporella obscura n. sp., holotype, ZIN 1/50742. A. Frontal part of colony; autozooids organized in 2–3 series between fenestrulae. B. Densely granulated abfrontal surface. C. Horn-shaped kenozooid with small avicularium. D. Group of zooids. E. Rounded condyles and denticulation of primary orifice. F. Distal part of orifice, showing denticulate distal margin and the circular, proximo-laterally directed suboral avicularium. G. Abfrontal avicularium. E. Ovicell with well-developed labellum and elongate median fissure. J. Group of zooids. Scale bars: A, B, 1 mm; C, E, F, G, 50 μm; D, 400 μm; I, J, 200 μm.
FIGURE 1 in New species and new records of Reteporella (Bryozoa: Cheilostomatida) from Greenland waters
FIGURE 1. Occurrence of Reteporella species in Greenland waters. Symbols: triangle—R. beaniana; circle—R. grimaldii; star—R. obscura n. sp.; rhomb—R. watersi; square—R. vitta n.sp.. Empty symbols: literature information; full symbols: material newly collected in 2016.
FIGURE 1 in Two new species of Stylopoma (Bryozoa, Cheilostomatida) from the Southwestern Atlantic
FIGURE 1. Known distribution of the studied Stylopoma species in Ceará (CE), Alagoas (AL) and Espírito Santo (ES). Symbols: black square, Stylopoma anacarolinae sp. nov.; black circle, Stylopoma priscilae sp. nov.
FIGURE 2 in Two new species of Stylopoma (Bryozoa, Cheilostomatida) from the Southwestern Atlantic
FIGURE 2. Stylopoma anacarolinae sp. nov., UFPE 2596, holotype. A. Autozooids, ovicells and a vicarious avicularium; borings through the frontal shield and ovicells are signs of predation. B, C. Close-up of a primary orifice with wide and deep U-shaped sinus and two adventitious avicularia. D. Sublanceolate vicarious avicularium. E, F. Ooecium with adventitious avicularia (encircles). Scale bars: A, 500 µm; B, C, 100 µm; D, 200 µm; E, F, 500 µm.
FIGURE 4 in Two new species of Stylopoma (Bryozoa, Cheilostomatida) from the Southwestern Atlantic
FIGURE 4. Stylopoma priscilae sp. nov., UFPE 213, holotype. A. Autozooids, vicarious avicularia and part of one ovicell (on the right). B. Vicarious kenozooids (arrows) between autozooids. C. Close-up of a primary orifice and a latero-oral adventitious avicularium. D. A spatulate vicarious avicularium between autozooids. E, F. Close-up of an ooecium with adventitious avicularia on its surface; with semicircular aperture and a small labellum (arrow). Scale bars: A, E, 500 µm; B, C, 100 µm; D, 150 µm; F, 200 µm.
FIGURE 3 in Two new species of Stylopoma (Bryozoa, Cheilostomatida) from the Southwestern Atlantic
FIGURE 3. Stylopoma anacarolinae sp. nov., paratypes, A (UFPE 3074), B (UFPE 243), C–E (UFPE 3075), F (UFPE 241). A. Vicarious kenozooid (encircle) between autozooids. B. Close-up of an orifice and an adventitious avicularium. C. Sublanceolate vicarious avicularium. D, E. Ooecium with a small labellum (arrow) and adventitious avicularia (encircle). F. *Ooecium with semicircular aperture (arrow) and a small labellum; adventitious avicularia (encircle). Scale bars: A, 500 µm; B, 100 µm; C, E, 150 µm; D, 250 µm; F, 200 µm.
FIGS 12–18 in Two new species of Phylactella (Bryozoa Cheilostomatida) from the Mediterranean area belonging to the P. labrosa (Busk) complex of species
FIGS 12–18. (12–15) Phylactella mediterranea sp. nov. (12) Ancestrula budding a single distal zooid, showing a row of inactive pore windows on the gymnocyst. Ciclopi cruise, sample 21C, 62.5 m. (13) Periancestrular budding pattern. Ciclopi cruise, sample 12E, 62 m. (14) Periancestrular part of a sheet-like colony lacking the ancestrula. Note increasing size of zooids, peristomes sometimes completed by a distal lamina and spines on the first budded zooid. Case Catarinicchia: BC8 sample, inferred depthw40 m. Sicilian. (15) Close-up of the orifice of the first zooid in figure 14, showing three oral spines. Case Catarinicchia: BC8 sample, inferred depthw40 m. Sicilian. (16–18) Prenantia ligulata (Manzoni). (16) Sterile and ovicelled zooids with typical peristomes and the shield unperforated suboral area. Ciclopi cruise, sample 2G: 87.5 m. (17) Close-up of the primary orifice. Ciclopi cruise, sample 2G: 87.5 m. (18) Ancestrula and periancestrular zooids with orificial spines. Apollo Bank (Ustica, southern Tyrrhenian Sea): 60 m. Scale bars: 100 Mm (12, 15, 17); 500 Mm (13, 14, 16); 200 Mm (18).
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