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1,069 results for “bryozoans”
Figure 17 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 17. Parasmittina alanbanneri Soule and Soule, (a–c) NSMT-Te 1104, (d) NSMT-Te 1105: (a) autozooids; (b) orifice, showing broad lyrula and strong condyles; (c) ovicelled and non-ovicelled autozooids; (d) autozooids, with larger, single avicularia. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a = 250 µm; b = 100 µm; c = 200 µm; d = 300 µm.
Figure 7 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 7. (a, b) Beania cookae Tilbrook, NSMT-Te 1068, dried specimens: (a) part of colony branch showing two complete autozooids; (b) enlargement of distal end of autozooid showing paired avicularia. (c–f) Beania hexamicorum Tilbrook, Hayward, and Gordon, dried specimens: (c) NHMUK 2016.5.13.12, frontal view showing recumbent colony loosely attached to substratum, with asterisks indicating autozooids that have more than one avicularium on a single side; (d) enlargement of left part of colony in previous panel, with autozooids having only single or paired avicularia proximolateral to orifice (asterisks, autozooids with pair of stout suboral spines meeting in midline; circles, autozooids with large operculum and lacking suboral spines); (e) NSMT-Te 1069, autozooids with two pairs of avicularia; asterisk and circle as in panel d; (f) NSMT-Te 1069, autozooid with three pairs of avicularia (arrowheads). All panels are scanning electron microscopic images. Scale bars: a, d = 500 µm; b = 100 µm; c = 1.0 mm; e, f = 400 µm.
Figure 4 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 4. (a–e) Thalamoporella karesansui sp. nov.: (a) NSMT-Te 1060 (holotype), autozooids, vicarious avicularium and ovicelled zooids; (b) NHMUK 2016.5.13.7 (paratype), vicarious avicularia and surrounding autozooids; (c) SES-specimen A, basal surface of dried colony, showing basal insertions; (d) NHMUK 2016.5.13.7 (paratype), spicules removed by bleaching, including small C-shaped callipers and medium-sized, slightly angled compasses; asterisks mark sponge spicules; (e) NHMUK 2016.5.13.7 (paratype), interzooidal connections; (f) Thalamoporella stapifera (Levinsen), NSMT-Te 1055, interzooidal connections. a, b, e, f, scanning electron microscopic images of bleached material; c, d, photomicrographs. Scale bars: a, c = 500 µm; b = 250 µm; d = 100 µm; e, f = 150 µm.
Figure 14 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 14. (a–e) Celleporaria pilaefera (Canu and Bassler), (a–d) NSMT-Te 1092, (e) SES-22: (a) autozooids near colony margin; (b) primary orifice; (c) suboral avicularia and typical suboral umbonate processes; (d) very long suboral umbonate processes; (e) ovicelled and non-ovicelled autozooids. (f–h) Celleporaria triangula Seo, NSMT-Te 1097: (f) autozooids and vicarious avicularium near colony margin; (g) primary orifices; (h) colony interior, with autozooids, vicarious avicularia and developing ooecia. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a, d–f, h = 500 µm; b = 100 µm; c = 250 µm; g = 150 µm.
Figure 3 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 3. (a) Aetea sp. A: NSMT-Te 1053, zooids and interconnecting stolons. (b–f) Thalamoporella stapifera (Levinsen): (b) NSMT-Te 1056, autozooids, vicarious avicularium and ovicelled zooid; (c) NSMT- Te 1054, vicarious avicularium, with surrounding autozooids showing no torsion; (d) NSMT-Te 1055, autozooids and ovicelled zooid; note small lateral-oral tubercles on zooid proximal to ovicelled zooid; (e) Reef-2zs, basal surface of colony, showing basal insertions; (f) spicules, including small stirrup-shaped callipers and small to medium, slightly angled compasses. a–d, scanning electron microscopic images; e, f, photomicrographs. Scale bars: a = 250 µm; b–e = 500 µm; f = 100 µm.
Figure 16 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 16. Parasmittina soulesi Scholz and Cusi, NSMT-Te 1097: (a) marginal autozooids, showing alyrulate orifice (bottom centre) and orifice with weakly developed lyrula (right); (b) orifice with welldeveloped lyrula; (c) ovicelled autozooids; (d) periancestrular zooids (one distal, two distolateral, and two proximolateral; ancestrula obscured, but very broad lyrula evident. All panels are scanning electron microscopic images of bleached specimen. Scale bars: a = 300 µm; b = 100 µm; c, d = 250 µm.
Figure 22 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 22. Stylopoma duboisii (Audouin), NSMT-Te 1129: (a) autozooids; (b) orifice; (c) autozooids and ovicells; (d) oblique view of ovicell, showing aperture. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a, c = 300 µm; b, d = 100 µm.
Figure 18 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 18. Pleurocodonellina microperforata Tilbrook: (a) NSMT-Te 1108, marginal autozooids showing one or two distal oral spine scars; (b) NSMT-Te 1108, ovicelled autozooids; (c) NSMT-Te 1112, ovicelled autozooids, with blunt suboral avicularia and larger pseudopores in ooecia; (d) NSMT-Te 1108, primary orifice, with sides of oral sinus nearly perpendicular; (e) NSMT-Te 1110, enlargement of orifice showing condylar denticulation; (f) NSMT-Te 1114, marginal autozooids, showing distribution of uniporous septula in vertical walls. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a–c, f = 300 µm; d = 100 µm; e = 30 µm.
Figure 9. Puellina harmeri Ristedt, 1985 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 9. Puellina harmeri Ristedt, 1985, scanning electron microscopic images of bleached (a, b, NSMT-Te 1077), unbleached (c, NSMT-Te 1076) and lightly bleached (d, NSMT-Te 1078) specimens: (a) autozooids; (b) ovicelled autozooids, with marginal avicularium; (c) ovicelled autozooids with long, single or paired lateral oral avicularia; (d) ancestrula and three periancestrular autozooids. Scale bars: a = 200 µm; b–d = 300 µm.
Figure 21 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 21. Stephanotheca fenestricella sp. nov., NSMT-Te 1124 (holotype): (a) ovicelled and nonovicelled autozooids; (b) orifices and suboral avicularia; (c) enlargement of orifice; note weakly denticulate condyles; (d) colony margin, showing uniporous septula in transverse walls. All panels are scanning electron microscopic images of the specimen after bleaching. Scale bars: a = 250 µm; b = 150 µm; c = 50 µm; d = 200 µm.
Figure 2 in Two new species of heavily calcified cyclostome bryozoans from the intertidal of Akkeshi Bay, Hokkaido, Japan
Figure 2. Intertidal cyclostome bryozoan colonies from Akkeshi Bay, Hokkaido, Japan. (A) Disporella ezoensis sp. nov., holotype, NHMUK 2014.11.18.1, bleached colony (red when alive) detached from its substrate; (B) Favosipora ainui sp. nov., paratype, 2014.11.18.23, dried but unbleached colony attached to a stone and containing numerous symbiont tubes. Scale bars: 1 cm.
Figure 3 in Two new species of heavily calcified cyclostome bryozoans from the intertidal of Akkeshi Bay, Hokkaido, Japan
Figure 3. Disporella ezoensis sp. nov. (A–E) holotype, NHMUK 2014.11.18.1: (A) surface of fertile colony; (B) large autozooidal apertures with smaller kenozooids overgrowing the roof of a dendritic gonozooid; (C) oblique view showing apertural spines; (D) thin diaphragms closing autozooidal and kenozooidal apertures; (E) partly formed gonozooid with aperture of probable fertile zooid indicated by an arrow; (F) paratype, 2014.11.18.12, vertical fracture through a gonozooid showing cylindrical autozooids passing through the brood chamber. Scale bars: A = 1 mm; B, E, F = 100 µm; C = 200 µm; D = 100 µm.
Figure 1 in Two new species of heavily calcified cyclostome bryozoans from the intertidal of Akkeshi Bay, Hokkaido, Japan
Figure 1. Map of Akkeshi Bay showing sampling stations (filled squares). Inset shows the location of Akkeshi Bay on Hokkaido Island, northern Japan. From Grischenko et al. (2007).
Telychian Bryozoa, Matrix (Bryozoans from the lower Silurian (Telychian) Hanchiatien Formation from southern Chongqing, South China)
<p>Eight bryozoan species are described from the Hanchiatien Formation (lower Silurian, Telychian) of southern Chongqing, South China. Four species are new: the trepostomes <i>Asperopora sinensis </i>n. sp., <i>Trematopora jiebeiensis</i> n. sp., and <i>Trematopora tenuis </i>n. sp., and the fenestrate <i>Moorephylloporina parvula</i> n. sp. One species, a cystoporate <i>Hennigopora</i> sp. is described in open nomenclature. <i>Moorephylloporina parvula</i> n. sp. is eurytopic, occurring in all types of facies within the bioherms. Erect <i>Moorephylloporina</i>, <i>Trematopora</i> and <i>Leioclema</i> form pioneering communities on weakly cemented substrates, whereas encrusting <i>Fistulipora</i>, <i>Hennigopora</i> and <i>Asperopora</i> occur on hardgrounds and form densely compact framestones. Robust branched <i>Trematopora</i> and <i>Leioclema</i> tend to occur out of the reef core (framework) where they may have formed reef-flank thickets in more agitated conditions. The generic composition of the studied fauna correlates with other localities in South China, and they show general palaeobiogeographic relations to Siberia and Indiana, USA.</p>
FIGURE 4. A, B in Report of ciliate-bryozoan-crustacean hyperepibiosis on crab (Decapoda Brachyura) from west coast of India, Arabian Sea
FIGURE 4. A, B. Paracineta saifulae (Mereschkowsky, 1877); C, D. Cothurnia ceramicola Kahl, 1933.
Data from: Cladistic analysis of the Paleozoic bryozoan family Monticuliporidae and Mesotrypidae
A set of 127 binary and multistate characters, weighted by the number of derived character states, degree of covariation, and level of homoplasy, was used in a cladistic analysis of type species representing12 genera previously assigned to families Monticuliporidae and Mesotrypidae. The most parsimonious tree consisted of a 10-genus monophyletic crown group with the remaining two genera forming a basal paraphyletic stem group. The composition of the monticuliporid crown group is broadly similar to two earlier classifications (Astrova 1978; Marintsch 1998) while stem group membership matches that of Astrova's (1965, 1978) family Mesotrypidae. Phenetic groupings, based on overall morphological similarity, have memberships that are similar to those of clades but provide no means of determining the polarity of evolutionary relationships either within or between them. Finally, only the observed stratigraphic ranges of the type species of genera provide a statistically significant match with cladistic branching sequence, perhaps because current composite generic ranges reflect the mixing of species belonging to different genera. Based on cladogram topology, we propose the placement of all 12 genera into a single family Monticuliporidae.
FIGURE 1 in Bryozoans from RV Sonne deep-sea cruises SO 167 ' Louisville' and SO 205 ' Mangan'
FIGURE 1. Station localities in the Tonga Arc region. Modified from Stoffers et al. (2003).
FIGURES 21–23 in New species and new records of bryozoans from shallow waters of Madeira Island
FIGURES 21–23. Schizoporella dunkeri: 21, autozooids and avicularia; 22, orifice; 23, ooecia.
FIGURES 24–25 in New species and new records of bryozoans from shallow waters of Madeira Island
FIGURES 24–25. Schizoporella unicornis: 24, autozooids and avicularia; 25, orifice and avicularia.
FIGURES 26–27 in New species and new records of bryozoans from shallow waters of Madeira Island
FIGURES 26–27. Hippoporella maderensis: 26, autozooids showing orificial spines; 27, ooecium.
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