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1,069 results for “bryozoans”
FIGURES 1–3 in Identity of bryozoan species described by Jullien & Calvet from the Bay of Biscay historically attributed to Smittia
FIGURES 1–3. Maps of distribution of specimens here studied. 1. Distribution of studied samples of Smittina cervicornis in the Iberian Peninsula (red, original localities of Smittia colletti). 2. Locality of Raymondcia gemmata n. comb. 3. Localities of Porella compressa (green, original localities of Smittia grimaldii; yellow, Smittia decipiens; red, Smittia fallax; grey, Smittia immersa; brown, recent localities). Large circles represent localities with more than one species.
FIGURES 10–16 in Identity of bryozoan species described by Jullien & Calvet from the Bay of Biscay historically attributed to Smittia
FIGURES 10–16. Different colonies of Smittina cervicornis (Pallas, 1766) showing the variability of the frontal wall, secondary orifice and suboral avicularia. (10, paralectotype of S. colletti, MOM 420122; 11, lectotype of S. colletti, MNHN 3913; 12, 13, 15, MHNUSC-Bry 422, Point Etxandarri, Bay of Biscay; 14, MHNUSC-Bry 423, Avilés Canyon; 16, MHNUSC- Bry 424, Menorca Channel).
FIGURES 4–9 in Identity of bryozoan species described by Jullien & Calvet from the Bay of Biscay historically attributed to Smittia
FIGURES 4–9. Smittina cervicornis (Pallas, 1766). 4. Group of colonies at 23–25 m depth in Point Etxandarri, Bay of Biscay. 5. General view of a living colony (Point Etxandarri, Bay of Biscay). 6–9. Branches with different levels of calcification. (6–7, holotype of S. colletti, MNHN 3913; 8, MHNUSC-Bry 424, Menorca Channel; 9, MOM 420122 as S. colletti).
Fig. 3 in Digging into boring bryozoans: new characters and new species of Immergentiidae
Fig. 3 Zooidal plasticity of Immergentia. a–d Zooids of immergentiids after decalcification of substrate. a Autozooids and sac zooid of Immergentia cf. zelandica (Locality: Inner Otago shelf, New Zealand). Zooid with slightly narrowed mid-zooidal region and elongated rounded basal end (arrow). b Autozooids and sac zooid of Immergentia pohowskii sp. nov. (Locality: Taiaroa Head, New Zealand). Several zooids with slightly narrowed mid- region (arrow). c Autozooids of Immergentia cf. suecica from France. d Zooidal plasticity of
FIGURE 5 in On some colorful bryozoans from Brazil: reevaluation of Aptonella violacea Canu & Bassler, 1928 and a new species of Cosciniopsis Canu & Bassler, 1927
FIGURE 5. Cosciniopsis viridis sp. nov. A. UFPE 3053, Alagoas, Brazil. B–E. UFPE 3001, Holotype, Alagoas, Brazil. F. UFPE 3141 Can stn. 111. A. Colony and its greenish cystid. B, C. General view of the colony. D. Detail of the orifice and adventitious avicularium. E. Ovicelled zooid. F. Internal view of the frontal wall. Scale bars: A = 1 cm; B = 600 µm; C = 400 µm; D = 120 µm; E = 400 µm; F = 250 µm.
FIGURE 1 in On some colorful bryozoans from Brazil: reevaluation of Aptonella violacea Canu & Bassler, 1928 and a new species of Cosciniopsis Canu & Bassler, 1927
FIGURE 1. Map of the Brazilian coastline with sampling sites (black circles) where specimens were collected through different expeditions. PA = Pará; CE = Ceará; RN = Rio Grande do Norte; PB = Paraíba; PE = Pernambuco; AL = Alagoas; BA = Bahia; ES = Espírito Santo; RJ = Rio de Janeiro.
FIGURE 4. Gigantopora lyncoides Ridley, 1881. A, B. NHMUK 1879.12.27.78 in On some colorful bryozoans from Brazil: reevaluation of Aptonella violacea Canu & Bassler, 1928 and a new species of Cosciniopsis Canu & Bassler, 1927
FIGURE 4. Gigantopora lyncoides Ridley, 1881. A, B. NHMUK 1879.12.27.78, Holotype, Espírito Santo, Brazil. C. UFPE 3144.2, Alagoas, Brazil. D. UFPE 890.2, Rio Grande do Norte, Brazil. A. Overview of the colony. B. Zooids with haltere-shaped spiramen located at the base of the peristome and latero-oral adventitious avicularia. C. Detail of the ovicell. D. Inner surface of the frontal wall. Scale bars: A = 400 µm; B = 200 µm; C = 250 µm; D = 150 µm.
FIGURE 3 in On some colorful bryozoans from Brazil: reevaluation of Aptonella violacea Canu & Bassler, 1928 and a new species of Cosciniopsis Canu & Bassler, 1927
FIGURE 3. Cycloperiella violacea (Canu & Bassler, 1928) n. comb. A. UFPE 3002, Rio Grande do Norte, Brazil. B, D. UFPE 3005, Bahia, Brazil. C, E. UFPE 3004, Pernambuco, Brazil. F. UFPE 3012, Rio Grande do Norte, Brazil. A. Colony and its reddish cystid. B, C. General view of the colony. D. Detail of the orifice and adventitious avicularium. E. Detail of the cormidial ovicell with pseudosinuses. F. Inner surface of the frontal wall of the autozooids. Scale bars: A = 1 cm; B, C = 500 µm; D = 150 µm; E = 250 µm; F = 200 µm.
FIGURE 2 in On some colorful bryozoans from Brazil: reevaluation of Aptonella violacea Canu & Bassler, 1928 and a new species of Cosciniopsis Canu & Bassler, 1927
FIGURE 2. Cycloperiella violacea (Canu & Bassler, 1928) n. comb., USNM 8556, Lectotype, Rio de Janeiro, Brazil. A, B. General view of the colony. C. Detail of zooids with partially damaged ovicells. D. Cormidial ovicell (dashed arrow), latero-oral adventitious avicularium (arrow), and raised peristome on ovicelled zooid forming a pseudosinus. Scale bars: A, B = 500 µm; C, D = 200 µm.
Figure 6. Cyclostome protoecial pseudopore patterns mapped onto a in Ancestrular morphology in cyclostome bryozoans and the quest for phylogenetically informative skeletal characters
Figure 6. Cyclostome protoecial pseudopore patterns mapped onto a molecular phylogeny. Numbers correspond to the patterns defined in the text (no species of Pattern 2 have been sequenced to date). Brackets signify that the pattern has been observed in a congener of the sequenced species and 'iw' an interior walled protoecium, which cannot have pseudopores. Diagrammatic figures of the patterns are shown next to the pattern numbers. Pattern 1 has been assigned to sequenced Crisia spp. based upon observations of a congener (Crisia eburnea) from the literature (Nielsen 1970; Silén 1977). The outgroup taxon for this phylogeny, based on Taylor, Waeschenbach, et al. (2015), is the phylactolaemate Pectinatella magnifica which lacks a mineralized skeleton and therefore a protoecium. Tree topology generated from Bayesian analysis of a concatenated lsrDNA and ssrDNA dataset. All nodes with <0.95 posterior probability were collapsed. See Taylor, Waeschenbach, et al. (2015) for full details.
Figure 5 in Ancestrular morphology in cyclostome bryozoans and the quest for phylogenetically informative skeletal characters
Figure 5. Patterns of protoecial pseudopore distribution represented diagrammatically using simplified drawings of ancestrula in which the pseudopores are shown as small black dots on the protoecium and the aperture of the ancestrula is the black circle at the distal end. The eight recognized patterns are depicted around the circumference of a pie chart showing their relative abundances among 74 species of cyclostomes (51 Recent and 23 fossil).
Figure 2. Cyclostome protoecia showing Pattern 1 in Ancestrular morphology in cyclostome bryozoans and the quest for phylogenetically informative skeletal characters
Figure 2. Cyclostome protoecia showing Pattern 1 in which there are no pseudopores on the protoecium (the irregularly distributed holes in (d) are microborings). (a) Filicrisia geniculata, Wembury, Devon, UK; the erect ancestrular tube and two lateral buds have articulated joints with the protoecium and sparse, elongate pseudopores. (b) Lichenoporid?, Akkeshi Bay, Hokkaido, Japan. (c) Tubulipora occidentalis, Pacific Grove, California, USA; note radial ridges on protoecium. (d) Platonea sp. 1, Otago Shelf, NZ; the irregularly distributed holes in the protoecium are interpreted as microborings. (e) Stomatopora sp. 1, Jurassic, Bathonian, Somerset, UK; the coarse, pseudoporous wall of the distal ancestrular tube contrasts with the smooth, non-pseudoporous protoecium. (f) Oncousoecia sp., Jurassic, Upper Callovian, Oxfordshire, UK; note plugged pseudopores on the distal ancestrular tube. Scale bars: 100 µm.
Figure 4. Cyclostome protoecia showing Pattern 6 in Ancestrular morphology in cyclostome bryozoans and the quest for phylogenetically informative skeletal characters
Figure 4. Cyclostome protoecia showing Pattern 6 (a, b), Pattern 7 (c, d) and Pattern 8 (e, f). (a) Diaperoecia purpurascens, Whangaroa Harbour, New Zealand. (b) 'Heteropora' neozelanica, Spirits Bay, New Zealand. (c) Annectocyma major, English Channel, UK; central part of protoecium is damaged. (d) Stomatopora cf. dichotomoides, Jurassic, Bathonian, Somerset, UK. (e) Crisulipora occidentalis, Long Beach, California, USA; the pseudopores in this species are occluded by perforated plates, making them less clearly visible. (f) Cinctipora elegans, Otago Shelf, New Zealand.
Figure 1 in Ancestrular morphology in cyclostome bryozoans and the quest for phylogenetically informative skeletal characters
Figure 1. Cyclostome protoecia with interior-walled calcification. Disporella hispida, Stoke Point, Devon, UK. (a) Protoecium with narrow band of exterior wall surrounding an area of pustulose interior wall. (b) Crenulated ridge separating exterior- and interior-walled calcification of another protoecium. Hornera?robusta, Otago Shelf, NZ. (c) Juvenile colony with new zooids formed directly on the ancestrular surface. (d–f) Protoecium of irregularly porous, pustulose interior-walled calcification with erect distal ancestrular tube. Scale bars: 100 µm, except (e) which is 50 µm.
Figure 3. Cyclostome protoecia showing Pattern 2 in Ancestrular morphology in cyclostome bryozoans and the quest for phylogenetically informative skeletal characters
Figure 3. Cyclostome protoecia showing Pattern 2 (a), Pattern 3 (b–d), Pattern 4 (e) and Pattern 5 (f–i). (a) aff. Liripora, Pleistocene, Kuromatsunai, Japan. (b) Plagioecia patina, Ferrol, Galicia, Spain. (c) Stomatopora incurvata, English Channel, UK. (d) Oncousoecia dilatans, Shetland, UK. (e) Microeciella suborbicularis, English Channel, UK. (f) Entalophoroecia deflexa, English Channel, UK. (g) Microeciella aff. suborbicularis, Port Cros, Mediterranean. (h) Mesonopora concatenata, Jurassic, Middle Bathonian, Somerset, UK. (i) Hyporosopora incrustans, Jurassic, Bathonian, Wiltshire, UK. Scale bars: 100 µm.
Figure 12 in Taxonomic revision of some lepraliomorph cheilostome bryozoans (Bryozoa: Lepraliomorpha) from Rio de Janeiro State, Brazil
Figure 12. Turritigera buski sp. nov. (dorsal view). (A) General view; (B) pseudopores and small avicularia; (C) bifurcation showing a large, spatulate avicularium; (D) detail of large avicularium; (E) ovicell (frontal side). Scale bar: A: 400 µm; B, E: 100 µm; C: 300 µm; D: 60 µm. MNRJ-182.
Figure 11 in Taxonomic revision of some lepraliomorph cheilostome bryozoans (Bryozoa: Lepraliomorpha) from Rio de Janeiro State, Brazil
Figure 11. Turritigera buski sp. nov. (frontal view). (A) General frontal view of the colony; (B) frontal view showing autozooids; (C) form and disposition of the autozooids, peristomial avicularia and marginal pores (larger) and small pseudopores spread on the frontal wall; (D) detail of the primary orifice, showing U-shaped sinus; (E) detail of peristome showing form and disposition of avicularia; (F) peristome with one avicularium. Scale bars: A: 3 mm; B: 900 µm; C, F: 100 µm; D, E: 60 µm. MNRJ-182.
Figure 10 in Taxonomic revision of some lepraliomorph cheilostome bryozoans (Bryozoa: Lepraliomorpha) from Rio de Janeiro State, Brazil
Figure 10. Stephanollona robustaspinosa sp. nov. (A) General view of the colony; (B) part of the colony showing arrangement and shape of autozooids, marginal pores, oral spines, ovicells and dimorphic avicularia; (C) detail of distal region of an autozooid with small avicularia spines and an ovicell; (D) dimorphic avicularia and oral spines of different shapes; (E) detail of distal region of an autozooid with elongate avicularia. Scale bars: A: 1 mm; B: 200 µm; C–E: 100 µm. MNRJ-178.
Figure 9 in Taxonomic revision of some lepraliomorph cheilostome bryozoans (Bryozoa: Lepraliomorpha) from Rio de Janeiro State, Brazil
Figure 9. Reteporella antennata sp. nov. (A,B) Views of the cup-shaped colony; (C) distal branch showing autozooidal arrangement, antenna-like spines and labial pore; (D) autozooidal arrangement at bifurcation region; (E) ovicellate autozooids and frontal avicularia. F. Avicularia. Scale bars: A,B: 0.5 cm; C–E: 200 µm; F: 50 µm. MNRJ-175.
Figure 8. Reteporellina evelinae Marcus, 1955 in Taxonomic revision of some lepraliomorph cheilostome bryozoans (Bryozoa: Lepraliomorpha) from Rio de Janeiro State, Brazil
Figure 8. Reteporellina evelinae Marcus, 1955. (A) General view of the colony; (B) branch bifurcation; (C) autozooids with well-developed peristomes; (D) frontal view of the branch showing autozooidal arrangement; (E) fertile autozooids and tooth-like structures on on the peristomes; (F) peristomial avicularium. Scale bars: A: 5 mm; B: 500 µm; C, E: 100 µm; D: 200 µm; F: 50 µm. MNRJ-174.
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Allen Brain Atlas
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