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1,069 results for “Bryozoan”
FIGURE 4 in New records of the bryozoan Metrarabdotos from the Pirabas Formation (Lower Miocene), Pará State, Brazil
FIGURE 4. Metrarabdotos capanemensis sp. nov. 1. General view of a colony showing fertile and infertile zooecia. 2. Detail showing two maternal zooecia bearing complete ooecia, flat ordinary zooecia and a large special avicularium below the maternal zooid. 3. Some zooecia with paired, ordinary proximally located avicularia and one elongated special avicularium. Note the frontal shield with elliptical areolar pores and a median longitudinal keel. Scale bars equal 1: 1000 µm; 2-3: 200 µm. 1-3: MG-6303-I-t. Arrows indicate special avicularia.
FIGURE 3 in New records of the bryozoan Metrarabdotos from the Pirabas Formation (Lower Miocene), Pará State, Brazil
FIGURE 3. Metrarabdotos elongatum sp. nov. 1. General view of a fragment showing some fertile and infertile zooecia. 2. Detail of some zooecia showing orifice with median denticles, paired avicularia, and areolar pores. 3. Detail of the secondary orifices showing a median denticle and a pair of laterally ordinary avicularia. 4. Internal view of some zooecia showing tridenticulate orifices. 5. Detail of the branch edge showing zooecia with large ordinary avicularia. 6. A maternal zooid with complete ooecium and paired ordinary avicularia surrounded by zooecia, each with a special avicularium paired with an ordinary one, and by infertile zooecia with paired ordinary avicularia. Scale bars equal 1: 500 µm; 2, 4-5: 200 µm; 3: 20 µm; 6: 100 µm. 1, 6: MG-6303-I-i; 2: MG-6303-I-p; 3: MG-6303-I-s; 4: MG-6303-I-l; 5: MG- 6303-I-h.
FIGURE 2 in New records of the bryozoan Metrarabdotos from the Pirabas Formation (Lower Miocene), Pará State, Brazil
FIGURE 2. Metrarabdotos aquaeguttum sp. nov. 1. General view of the colony fragment with infertile and fertile zoecia. 2. Detail of a branch edge showing special and ordinary avicularia. 3. Detail of zooids adjacent to a maternal one showing orifice, special avicularium paired with an ordinary one, and part of the ooecium. 4. Detail of maternal zooid with a complete ooecium, ordinary avicularia, and a zooid adjacent to maternal one, with a special avicularium. Scale bars equal 1: 500 µm; 2: 100 µm; 3: 40 µm; 4: 200 µm. 1, 4: MG-6303-I-b; 2: MG-6303-I-c; 3: MG-6303-I-a.
Fig.4. Osthimosiaglomerata. A in Palaeoecology of free-lying domal bryozoan colonies from the Upper Eocene of southeastern USA
Fig.4. Osthimosiaglomerata. A.NHM BZ4972.A 1.Surface of colony showing frontally budded autozooids in various stages of development.A 2.Detail of surface with complete suboral avicularium in left central zooid, incomplete chamber of suboral avicularium in right central and lower zooids, and incomplete brood chambers distal to left central and right central zooids. B.Lateral view of lower edge of colony, with frontally budded zooids extending to base of colony, which is visible at lower edge of photograph; NHM BZ4967. C.Fractured surface through colony showing chaotic stacking of frontally budded zooids; NHM BZ4973. Scale bar in A2 200 µm; all others 1000 µm.
Fig.3. Parasmittina collum. A in Palaeoecology of free-lying domal bryozoan colonies from the Upper Eocene of southeastern USA
Fig.3. Parasmittina collum. A.Distribution of colony diameters. B. Regression of colony height on colony diameter; Y = 0.408X + 0.632 mm. C.Distribu − tion of substratum diameters. D.Proportion of types of substrata on which colonies were established. E.Frequency distribution of encrusting organisms on lower surface. F.Frequency distribution of encrusting organisms on upper surface, with same identifying.Abbreviations: An, annelids (serpulids); Ar, Arca sp.; Bi, other bivalves; Br, bryozoan fragments; Ca, Cardium sp.; Ch, cheilostomes; Cy, cyclostomes; Ec, echinoid fragments; Fo, foraminiferans; Lu, Lunulites sp.; Mi, miscellaneous; Oy, oysters; Pe, pectinid bivalves, probably all Chlamys spp.; Po, poriferans.
Fig.1.Domal bryozoans from the Castle Hayne Formation. A–D in Palaeoecology of free-lying domal bryozoan colonies from the Upper Eocene of southeastern USA
Fig.1.Domal bryozoans from the Castle Hayne Formation. A–D. Parasmittina collum (Canu and Bassler). A.Upper surface with multiple subcolonies vis − ible; NHM BZ4963. B.Undersurface of colony established on Chlamys; NHM BZ4964. C.NHM BZ4965.C 1.Lateral view.C 2.Undersurface, established on bivalve fragment. D.Lateral view of colony with renewed growth indicated by second lateral flange; NHM BZ4966. E, F. Osthimosia glomerata (Gabb and Horn). E.NHM BZ4967.E 1.Upper surface.E 2.Undersurface, established on Lunulites sp.E 3.Lateral view. F.Lateral view of colony with renewed growth indicated by broader flange developed above short basal portion with a curved surface consisting of frontal surfaces of zooids; NHM BZ4968. G. Multispecies dome; NHM BZ4969. G1. Upper surface. G2. Undersurface showing Chlamys substratum. G3. Lateral view. Scale bars 1 cm.
Fig.2. Parasmittina collum. A in Palaeoecology of free-lying domal bryozoan colonies from the Upper Eocene of southeastern USA
Fig.2. Parasmittina collum. A.NHM BZ4963.A 1.Autozooids radiating from center of subcolony.A 2.Junction between two subcolonies, indicated by line of convergence of zooids that extends from top left to right end of scale bar. B.NHM BZ4970.B 1.Edge of colony growing across Chlamys sp.B 2.Fertile zooids, each with inflated ovicell distal to zooidal orifice. C.Underside of colony extending free beyond Chlamys substratum, with wrinkles suggestive of growth lines and larger−scale arc−shaped overlapped edges of successive subcolonies; NHM BZ4964. D.Fractured surface through colony showing moderately well defined layers of zooids that develop from a combination of local eruptive budding and lateral budding; NHM BZ4971.Scale bar in B 2 500 µm; all others 1000 µm.
Fig.7.Multispecies domes. A in Palaeoecology of free-lying domal bryozoan colonies from the Upper Eocene of southeastern USA
Fig.7.Multispecies domes. A.Distribution of dome diameters. B.Regression of colony height on colony diameter; Y = 0.512X +0.927 mm. C.Distribution of substratum diameters. D.Proportion of types of substrata on which colonies were established; see Fig.3D for identifying abbreviations. E.Frequency distribution of encrusting organisms on lower surface. F.Frequency distribution of non−bryozoan encrusting organisms on upper surface.Abbreviations: An, annelids (serpulids); Ar, Arca sp.; Bi, other bivalves; Br, bryozoan fragments; Ca, Cardium sp.; Ch, cheilostomes; Cy, cyclostomes; Ec, echinoid fragments; Fo, foraminiferans; Lu, Lunulites sp.; Mi, miscellaneous; Oy, oysters; Pe, pectinid bivalves, probably all Chlamys spp.; Po, poriferans. Ą
Fig.5. Osthimosia glomerata. A in Palaeoecology of free-lying domal bryozoan colonies from the Upper Eocene of southeastern USA
Fig.5. Osthimosia glomerata. A.Distribution of colony diameters. B.Regression of colony height on colony diameter; Y = 0.715X – 1.579 mm. C.Distri − bution of substratum diameters. D.Proportion of types of substrata on which colonies were established. E.Frequency distribution of encrusting organisms on lower surface. F.Frequency distribution of encrusting organisms on upper surface.Abbreviations: An, annelids (serpulids); Ar, Arca sp.; Bi, other bivalves; Br, bryozoan fragments; Ca, Cardium sp.; Ch, cheilostomes; Cy, cyclostomes; Ec, echinoid fragments; Fo, foraminiferans; Lu, Lunulites sp.; Mi, miscellaneous; Oy, oysters; Pe, pectinid bivalves, probably all Chlamys spp.; Po, poriferans.
Linked collectors and determiners for: Diversity and distribution of adeonid bryozoans (Cheilostomata: Adeonidae) in Japanese waters.
Natural history specimen data linked to collectors and determiners held within, "Diversity and distribution of adeonid bryozoans (Cheilostomata: Adeonidae) in Japanese waters". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/af31502e-3df0-4f1a-bea6-e24ed3f38a88">https://bionomia.net/dataset/af31502e-3df0-4f1a-bea6-e24ed3f38a88</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/af31502e-3df0-4f1a-bea6-e24ed3f38a88">https://gbif.org/dataset/af31502e-3df0-4f1a-bea6-e24ed3f38a88</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: New species, genera, families, and range extensions of freshwater bryozoans in Brazil: the tip of the iceberg?.
Natural history specimen data linked to collectors and determiners held within, "New species, genera, families, and range extensions of freshwater bryozoans in Brazil: the tip of the iceberg?". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/96372afc-2608-4f05-9d83-51971010508a">https://bionomia.net/dataset/96372afc-2608-4f05-9d83-51971010508a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/96372afc-2608-4f05-9d83-51971010508a">https://gbif.org/dataset/96372afc-2608-4f05-9d83-51971010508a</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: First occurrence of the non-native bryozoan Schizoporella japonica Ortmann (1890) in Western Europe.
Natural history specimen data linked to collectors and determiners held within, "First occurrence of the non-native bryozoan Schizoporella japonica Ortmann (1890) in Western Europe". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/db0408ae-59dc-4341-9f1b-cd701efe666d">https://bionomia.net/dataset/db0408ae-59dc-4341-9f1b-cd701efe666d</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/db0408ae-59dc-4341-9f1b-cd701efe666d">https://gbif.org/dataset/db0408ae-59dc-4341-9f1b-cd701efe666d</a>. Formatted as a Frictionless Data package.
Figure 3 in Systematics, variation, and developmental instability: analysis of spine patterns in ancestrulae of a common bryozoan
Figure 3. Seasonal trends in frequencies of 3:3:1 (black) and variant (grey) spine patterns for the first-generation ancestrulae over the course of the 7-week sampling period from 14 July to 25 August. The ratio of variants to 3:3:1 and % variants are included.
Figure 1 in Systematics, variation, and developmental instability: analysis of spine patterns in ancestrulae of a common bryozoan
Figure 1. (A) SEM of an ancestrula of Bugula stolonifera: this ancestrula has a spine pattern of 4:3:1 (see Figure 2); (B) diagram of the position of left and right distal margins and position of the proximal spine.
Figure 2 in Systematics, variation, and developmental instability: analysis of spine patterns in ancestrulae of a common bryozoan
Figure 2. Some common spine pattern formulae and views of the frontal membrane of ancestralae of Bugula stolonifera. All spine patterns are recorded from the viewpoint of the ancestrula right:left:proximal. (A) Diagram of an ancestrula with the typical 3:3:1 spine pattern cited in the text; (B) 3:3:0 variant spine pattern resulting from a loss of the proximal spine: this spine pattern was the most abundant variant spine pattern accounting for 54% of the variant spine patterns; (C) 3:2:1 variant spine pattern resulting from a loss on the left distal margin; (D) 4:3:1 variant spine pattern resulting from a spine gain on the right distal margin.
Figure 4 in Arctic cheilostome bryozoan species of the genus Escharoides
Figure 4. Escharoides jacksoni (Waters, 1900), material formerly placed in Escharoides jacksoni var. rostrata (Kluge, 1946) (ZI 1/2364), bleached. (A) Colony encrusting a stem showing autozooids and ovicellate zooids; (B) ovicellate zooid with paired lateral avicularium; (C) autozooid with one lateral avicularia; (D) orifice of autozooid with characteristic plain suboral shelf. Scale bars: 200 mm (A); 100 mm (B, C, D).
Figure 5 in Arctic cheilostome bryozoan species of the genus Escharoides
Figure 5. Escharoides bidenkapi (Kluge, 1946) (black arrow) growing on a colony of Escharoides jacksoni (Waters, 1900) (white arrows) (ZI 1), bleached.
Figure 3 in Arctic cheilostome bryozoan species of the genus Escharoides
Figure 3. Escharoides jacksoni (Waters, 1900), bleached. (A) Colony showing autozooids and ovicellate zooids (NHM 2006.07.31.2); (B) autozooid lacking avicularia and ovicellate zooid with paired lateral avicularia (ZI 50/ 354); (C) orifice of autozooid with characteristic plain suboral shelf (NHM 2006.07.31.2); (D) ancestrula and surrounding zooids (ZI 50/354). Scale bars: 1 mm (A); 100 mm (B, C); 200 mm (D).
Figure 2 in Arctic cheilostome bryozoan species of the genus Escharoides
Figure 2. Escharoides bidenkapi (Kluge, 1946), bleached. (A) Colony showing autozooids and ovicellate zooids (lectotype: ZI 30/2945); (B) ovicellate zooid with two lateral avicularia (ZI 36/5223); (C) orifice of autozooid with two lateral avicularia and characteristic suboral shelf with distal crenulation (ZI 38/5468); (D) ancestrula and surrounding zooids (ZI 38/5468). Scale bars: 100 mm (A, C); 200 mm (B, D).
Figure 1 in Arctic cheilostome bryozoan species of the genus Escharoides
Figure 1. Escharoides coccinea (Abildgaard, 1806), NHM 1911.10.1.1034, Guernsey, bleached. (A) Colony showing autozooids and ovicellate zooids; (B) ovicellate zooid with two lateral avicularia; (C) autozooid with two lateral avicularia of strikingly unequal sizes; (D) orifice of autozooid. Scale bars: 200 mm (A); 100 mm (B, C); 30 mm (D).
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International Brain Laboratory public data
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OpenNeuro
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