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13 results for “Rhynchozoon”
Figure 26. Rhynchozoon glabrum n in Intertidal Bryozoa (Cheilostomata) of Ketchikan, Alaska
Figure 26. Rhynchozoon glabrum n. sp.: (A) group of marginal zooids showing suboral avicularian chamber at several stages of formation; (B) group of marginal zooids with bulbous suboral avicularian chamber; (C) enlargement of orifice; (D) group of ovicellate zooids showing stages of ovicell formation, beginning with extension of endooecium (lower right) into space left for ovicell during development of distal zooids; note that some zooids have a proximal marginal avicularium, whereas others lack one; (E) enlargement showing ovicells; (F) group of zooids with up to three marginal avicularia each. All specimens bleached. Scale bars: 500 Mm (A, B, D, F); 50 Mm (C); 250 Mm (E).
Fig. 44. A–D. Rhynchozoon revelatus. A in Northern Adriatic Bryozoa From The Vicinity Of Rovinj, Croatia
Fig. 44. A–D. Rhynchozoon revelatus. A. General aspect (holotype, AMNH 1005; 0.5 mm). B. Autozooids and (bottom right) maternal zooid with ovicell (holotype, AMNH 1005; 0.1 mm). C. Autozooidal orifice (holotype, AMNH 1005; 0.05 mm). D. Ancestrula (center) and early autozooids (paratype, AMNH 1056). E–H. Schizotheca fissa. E. Entire, untreated colony (AMNH 942; 0.5 mm). F. Maternal zooid with normal ovicell (AMNH 1009; 0.1 mm). G. Oblique view from distal end of maternal zooid with ovicell bearing distal adventitious avicularium (AMNH 1010; 0.1 mm). H. Ontogenetically young, untreated autozooids (AMNH 942; 0.1 mm).
FIGURES 160–163. Rhynchozoon detectum Harmer, 1957, RGM.1350590 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 160–163. Rhynchozoon detectum Harmer, 1957, RGM.1350590, Holocene, UPGG041, off South Sulawesi. 160. General view of a colony fragment. 161. Close-up of zooids at the colony growing edge. 162. Group of ovicellate zooids with numerous frontal avicularia and a few interzooidal avicularia. 163. Close-up of an orifice, ooecium, hooked suboral avicularium, interzooidal avicularium with truncated curved tip, and small frontal avicularia. Scale bars: Fig. 160 = 500 µm; Fig. 161 = 100 µm; Fig. 162 = 200 µm; Fig. 163 = 50 µm.
FIGURES 77–82. Rhynchozoon coalitum n in New and little-known cheilostomatous Bryozoa from the south and southeastern Brazilian continental shelf and slope
FIGURES 77–82. Rhynchozoon coalitum n. sp., MZUSP 0334 (part of the paratype specimen), off São Paulo, Brazil. 77, Fertile colony; 78, distal edge of colony; 79, close-up of autozooids, note the four oral spines; 80, close-up of ovicelled zooids, note the two oral spines; 81, close-up of orifice, note the four oral spines at the distal edge of orifice; 82, close-up of orifice with peristomial complex, noted the avicularium and adjacent mucro forming a labial pore.
FIGURES 22–28. Rhynchozoon zealandicum n in New bryozoan taxa from a new marine conservation area in New Zealand, with a checklist of Bryozoa from Greater Cook Strait
FIGURES 22–28. Rhynchozoon zealandicum n. sp. 22, Surface of colony from margin to centre showing the change in orientation of zooids in the centre of the colony owing to frontal budding. 23, Developing zooids at the colony margin showing the distribution of pore-chambers. 24, Orificial view of zooids near the colony margin showing suboral avicularia. 25, Recumbent zooids showing the peristomial processes. 26, Frontally borne adventitious avicularium. 27, Ovicells showing frontal ectooecial tabula and short broad labellum. 28, Primary orifice. Scale bars: Fig. 22 = 1 mm; Figs 23–27 = 100 µm; Fig. 28 = 20 µm.
FIGURES 84–89. Rhynchozoon brasiliensis n in Diversity of marine bryozoans inhabiting demosponges in northeastern Brazil
FIGURES 84–89. Rhynchozoon brasiliensis n. sp., UFBA 1579, holotype, Bahia State, Brazil. 84, Zooids at the growing edge with frontal and suboral avicularia; 85, Autozooids increasing calcification obscuring the primary orifice and suboral avicularium; 86, Group of older autozooids showing verrugate-like frontal process and frontal diamond-shaped avicularia; 87, Detail of primary orifice showing denticles and condyles; 88, Detail of diamond-shaped avicularium; 89, Ovicelled zooids. Scale bars: 84 = 250 µm; 85, 89 = 100 µm; 86 = 200 µm; 87, 88 = 50 µm.
FIGURE 11. Rhynchozoon itaparicaensis n in Bryozoa on disarticulated bivalve shells from Todos os Santos Bay, northeastern Brazil, with the description of two new species
FIGURE 11. Rhynchozoon itaparicaensis n. sp., PARATYPE, USNM 8564. A. OVERVIEW Of A COLONY SHOWINg fRONTAL AVICULARIA (ARROWS). B. CLOSE-UP Of A PRIMARY ORIfICE SHOWINg THE DENTICULATE MARgIN, CONDYLES AND SINUS. C. CLOSE-UP SHOWINg A LARgE SUBORAL AVICULARIUM AND THE UNCINATE PROCESS. D. OVICELLED ZOOIDS. SCALE BARS: A, 500 µM; B, C, 50 µM; D, 100 µM.
FIGURE 10. Rhynchozoon itaparicaensis n in Bryozoa on disarticulated bivalve shells from Todos os Santos Bay, northeastern Brazil, with the description of two new species
FIGURE 10. Rhynchozoon itaparicaensis n. sp., HOLOTYPE, UFBA 1629. A. COLONY MARgIN SHOWINg YOUNg AUTOZOOIDS WITH THE CHAMBER Of THE LARgE SUBORAL AVICULARIUM STILL EVIDENT. B. GROUP Of OLDER, HEAVILY CALCIfIED AUTOZOOIDS WITH INDISTINCT ZOOIDAL BOUNDARIES. C. CLOSE-UP Of A PRIMARY ORIfICE SHOWINg THE DENTICULATE MARgIN, CONDYLES AND SINUS. D. CLOSE-UP Of A SUBORAL AVICULARIUM SHOWINg THE SHORT UNCINATE PROCESS. E. AUTOZOOIDS SHOWINg SUBORAL AND OTHER fRONTAL AVICULARIA (ARROWS). F. OVICELLED ZOOIDS. SCALE BARS: A–C, 250 µM; D, 100 µM; E, F, 200 µM.
FIGURE 9. Rhynchozoon phrynoglossum MARCUS, 1937A, UFBA 1650. A in Bryozoa on disarticulated bivalve shells from Todos os Santos Bay, northeastern Brazil, with the description of two new species
FIGURE 9. Rhynchozoon phrynoglossum MARCUS, 1937A, UFBA 1650. A. GROUP Of YOUNg AUTOZOOIDS, SOME WITH A LARgE SUBORAL AVICULARIUM. B. CLOSE-UP SHOWINg THE PRIMARY ORIfICE WITH SHALLOW MEDIAN SINUS, AVICULARIA AND OVICELL. C. CLOSE-UP SHOWINg fRONTAL (CIRCLE) AND VICARIOUS (ARROW) AVICULARIA. D. GROUP Of OVICELLED ZOOIDS. SCALE BARS: A, 250 µM; B, 100 µM; C, D, 200 µM.
FIGURE 6. Rhynchozoon turgidum n in Ten new species of marine bryozoans (Gymnolaemata: Cheilostomatida) from Brazil
FIGURE 6. Rhynchozoon turgidum n. sp., UFBA 2238.12, holotype. A. Overview of an encrusting colony. B. Autozooids at the growing edge. C. Older autozooids. D. Detail of primary orifice. E. Group of ovicelled zooids. F. Detail of ovicells. Scale bars: A. 500 µm; B, C, F. 200 µm; D. 100 µm; E. 250 µm.
Fig. 43. A–E. Rhynchozoon neapolitanum. A in Northern Adriatic Bryozoa From The Vicinity Of Rovinj, Croatia
Fig. 43. A–E. Rhynchozoon neapolitanum. A. General aspect of frontally budded region (AMNH 1003; 0.5 mm). B. Colony margin with laterally budded zooids (AMNH 968; 0.5 mm). C. Ontogenetically young (top left) and (center) old autozooids (AMNH 1003; 0.5 mm). D. Ovicell (AMNH 1003; 0.05 mm). E. Autozooidal orifice (AMNH 1003; 0.05 mm). F–H. Rhynchozoon pseudodigitatum (AMNH 1004). F. General aspect (0.5 mm). G. Autozooids along colony margin (0.1 mm). H. Autozooidal orifice with orificial avicularium (0.05 mm).
FIGURE 17. Rhynchozoon latiavicularium n in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 17. Rhynchozoon latiavicularium n. sp. A–C. Paratype, VNMN-0265; D–F. Holotype, VNMN-0264. A. Colony. B. Marginal autozooids in frontodistal view, showing orifices and suboral avicularia. C. Enlargement of orifices. D. Colony surface, showing numerous frontal avicularia; ooecia also abundant. E. Suboral and frontal avicularia; note that avicularia can have rounded (arrows) or more acute (white arrowheads) proximal end of rostrum; also note V-shaped crossbar elements (black arrowheads) of avicularia. F. Immersed ooecia. Scale bars: A, 1 mm; B, D, 500 µm; C, 100 µm; E, 125 µm; F, 250 µm.
FIGURE 16. Rhynchozoon setiavicularium n in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 16. Rhynchozoon setiavicularium n. sp., holotype, VNMN-0263. A. Young autozooids at colony margin. B. Older portion of colony, showing suboral avicularia with slight uncinus (arrowhead), and frontal avicularia with narrow rostrum and simple crossbar (arrow). C. Orifice. D. Immersed ooecia, with wide labellum (arrowhead) and flat, vertical exposed endooecial panel in peristome. E. Autozooids in frontodistal view, showing right-angled suboral avicularian mandibular rostra. F. Colony surface, showing decurved frontal avicularia and scattered nodules. Scale bars: A, 500 µm; B, F, 250 µm; C, 100 µm; D, E, 150 µm.
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