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152 results for “Pleistocene to Holocene”
FIGURES 177–183 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 177–183. Triphyllozoon hirsutum (Busk, 1884), Holocene, UPGG041, off South Sulawesi. 177–180. RGM.1350596. 177. General view of a colony fragment. 178. Group of zooids some of which are ovicellate. 179. Abfrontal surface with elliptical and spatulate avicularia. 180. Close-up of a lanceolate avicularium on the abfrontal surface. 181–183. RGM.1350597. 181. Close-up of autozooids showing the primary orifice and the robust, coalescent oral spine bases. 182. Close-up of a large, lanceolate avicularium placed within the fenestrula. 183. View of the abfrontal surface with spatulate and lanceolate avicularia. Scale bars: Fig. 177 = 300 µm; Figs 178, 180 = 100 µm; Figs 179, 183 = 200 µm; Figs 181, 182 = 50 µm.
FIGURES 164–170 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 164–170. Reteporellina sp., Holocene, UPGG041, off South Sulawesi. 164–168. RGM.1350591. 164. General view of a colony fragment. 165. Group of autozooids. 166. Group of ovicellate zooids. 167. General view of the abfrontal surface. 168. Close-up of the abfrontal surface with an avicularium (right). 169, 170. RGM.1350592. 169. Close-up of an autozooid with large peristomial avicularium but orifice sealed by secondary calcification. 170. Close-up of two peristomial orifices with median peristomial groove and ooecium. Scale bars: Figs 164, 167 = 500 µm; Figs 165, 166 = 200 µm; Figs 168–170 = 100 µm.
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 106–109 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 106–109. Figularia capitifera (Canu & Bassler, 1929) n. comb., holotype, USNM 8048, Recent, Jolo, Philippines. 106. Group of zooids and vicarious avicularia. 107. Close-up of the orifice, with and without operculum. 108. Group of ovicellate zooids. 109. Close-up of a vicarious avicularium. Scale bars: Fig. 106 = 500 µm; Figs 107, 109 = 100 µm; Fig. 108 = 200 µm.
FIGURES 16–18 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 16–18. Hiantopora sp., RGM.1350547, Holocene, UPGG041, off South Sulawesi. 16. View of the colony fragment. 17. Close-up of an ovicellate zooid. 18. Close-up of a zooid with coalescent spines and a pear-shaped adventitious avicularium. Scale bars: Fig. 16 = 200 µm; Figs 17, 18 = 100 µm.
FIGURES 66–70. Celleporaria triangula Seo, 1994, RGM.1350561 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 66–70. Celleporaria triangula Seo, 1994, RGM.1350561, early Pleistocene, Java. 66. General view of the colony fragment. 67. Close-up of an orifice showing the three tooth-like processes, condyles, and suboral avicularium. 68. Close-up of two zooids with oral spine bases. 69, 70. Close-ups of interzoodal avicularia. Scale bars: Fig. 66 = 400 µm; Figs 67, 69, 70 = 40 µm; Fig. 68 = 100 µm.
FIGURES 158, 159 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 158, 159. Psammocleidochasma sp., RGM.1350589, early Pleistocene, Java. 158. View of the colony encrusting a shell fragment. 159. Close-up of zooids showing oral and frontal tubercles, marginal areolar pores, cleithridiate orifice, oral spine bases usually covered by distal calcification (see arrow), and pore-chamber windows. Scale bars: Fig. 158 = 400 µm; Fig. 159 = 200 µm.
FIGURES 13–15 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 13–15. Biflustra cf. virgata (Canu & Bassler, 1929), RGM.1350546, Holocene, UPGG041, off South Sulawesi. 13. Branch fragment.14. Close-up of irregularly shaped zooids. 15. Close-up of regular zooids showing the denticulate, fan-shaped, plectriform-type apparatus. Scale bars: Fig. 13 = 400 µm; Figs 14, 15 = 100 µm.
FIGURES 10–12 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 10–12. Biflustra cf. quadrata (Canu & Bassler, 1929), RGM.1350545, Holocene, off South Sulawesi. 10. Branch fragment. 11. Group of autozooids. 12. Close-up of a zooid showing the denticulate plectriform-type apparatus. Scale bars: Fig. 10 = 1 mm; Figs 11, 12 = 200 µm.
FIGURES 8, 9 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 8, 9. Acanthodesia cf. lamellosa Canu & Bassler, 1929, early Pleistocene and Holocene, off South Sulawesi. 8. RGM.1350544, group of autozooids. 9. RGM.1350543, group of autozooids and a kenozooid. Scale bars: 200 µm.
FIGURES 5–7. Acanthodesia variegata n in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 5–7. Acanthodesia variegata n. sp., holotype, RGM.1350542, Holocene, off South Sulawesi. 5. General view of the colony encrusting a fragment of Adeonellopsis, and showing the high intracolonial variability. 6. Close-up of two zooids with granular cryptocyst, and large, rectangular plectriform-type apparatus. 7. Close-up of a zooid with smooth cryptocyst, and small, fan-shaped plectriform-type apparatus. Scale bars: Fig. 5 = 400 µm; Fig. 6 = 100 µm; Fig. 7 = 50 µm.
FIGURES 1–4 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 1–4.?Nevianipora sp., RGM.1350541, Holocene, off South Sulawesi. 1. Frontal view of branch fragment. 2. Closeup of two autozooids. 3. Dorsal view of branch fragment. 4. Close-up of the dorsal surface. Scale bars: Figs 1, 3 = 1 mm; Figs 2, 4 = 100 µm.
FIGURES 62–65. Celleporaria cylindrocystis Tilbrook, 2006. 62–64. RGM.1350559 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 62–65. Celleporaria cylindrocystis Tilbrook, 2006. 62–64. RGM.1350559, early Pleistocene, Java. 62. General view of the colony fragment. 63. Group of autozooids, some with oral spine bases. 64. Close-up of an orifice showing the three tooth-like processes. 65. RGM.1350560, Holocene, UPGG041, off South Sulawesi. Group of zooids, some of which are ovicellate (see arrows), and interzooidal avicularia. Scale bars: Fig. 62 = 300 µm; Figs 63, 65 = 200 µm; Fig. 64 = 50 µm.
FIGURES 146–149 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 146–149. Predanophora cf. ensenada Tilbrook, 2006, RGM.1350585, Holocene, UPGG041, off South Sulawesi. 146. General view of the colony fragment. 147. Group of zooids. 148. Close-up of an ovicellate zooid, with incomplete ooecium, and spatulate, adventitious avicularia. 149. Close-up of an orifice. Scale bars: Fig. 146 = 500 µm; Fig. 147 = 200 µm; Fig. 148 = 100 µm; Fig. 149 = 50 µm.
FIGURES 139–145 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 139–145. 'Characodoma' latisinuatum Harmer, 1957, Holocene, UPGG041, off South Sulawesi. 139–141. RGM.1350582. 139. Colony starting as an encrustation on a bivalve shell fragment, and developing an erect portion independent of the substrate; note the spinose appearance of the frontal shield of the ontogenetically older zooids compared to the smooth or finely tuberculate frontal shield of the latest budded zooids. 140. Close-up of a zooid with spinose frontal shield. 141. Close-up of zooids with smooth to finely tuberculate frontal shield. 142–144. RGM.1350583. 142. Colony covering both sides of a shell fragment. 143. Group of ovicellate zooids with single or paired adventitious avicularia. 144. Close-up of an orifice. 145. RGM.1350584, group of zooids with sealed orifice and ooecium owing to secondary calcification. Scale bars: Figs 139, 142 = 500 µm; Figs 140, 141, 145 = 100 µm; Fig. 143 = 200 µm; Fig. 144 = 50 µm.
FIGURES 155–157 in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 155–157. Scorpiodinipora costulata (Canu & Bassler, 1929), RGM.1350588, Holocene, UPGG041, off South Sulawesi. 155. View of the colony encrusting a gastropod shell fragment. 156. Group of zooids. 157. Close-up of a zooid. Scale bars: Fig. 155 = 500 µm; Fig. 156 = 200 µm; Fig. 157 = 50 µm.
FIGURES 150–154. Turbicellepora yasuharai n in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 150–154. Turbicellepora yasuharai n. sp., Holocene, UPGG041, off South Sulawesi. 150–153. Holotype, RGM.1350586. 150. General view of the colony fragment. 151. Close-up of a zooid and two interzooidal avicularia. 152. Close-up of two ovicellate zooids. 153. Close-up of a zooid with a well-preserved orifice, suboral umbo, and broken adventitious avicularium. 154. Paratype, RGM.1350587, general view of the colony. Scale bars: Fig. 150 = 200 µm; Figs 151–153 = 100 µm; Fig. 154 = 400 µm.
FIGURES 96, 97. Calyptotheca sidneyi n in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 96, 97. Calyptotheca sidneyi n. sp., paratype, NHMUK 1980.2.1.7, Recent, locality not recorded. 96. General view of an erect colony fragment. 97. Close-up of autozooids at colony bifurcation. Scale bars: Fig. 96 = 200 µm; Fig. 97 = 100 µm.
FIGURES 81–85. Pleurocodonellina javanensis n in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 81–85. Pleurocodonellina javanensis n. sp., holotype, RGM.1350564, early Pleistocene, Java. 81. General view of part of the colony including early astogeny. 82. Group of zooids; note the two, oral spine bases visible on the distal orificial edge of the zooid at the bottom. 83. Close-up of two zooids with lateral avicularia of different shapes. 84. Close-up of an orifice. 85. Ovicellate zooids. Scale bars: Fig. 81 = 200 µm; Figs 82, 83, 85 = 100 µm; Fig. 84 = 50 µm.
FIGURES 92–95. Calyptotheca sidneyi n in Early Pleistocene and Holocene bryozoans from Indonesia
FIGURES 92–95. Calyptotheca sidneyi n. sp., holotype, NHMUK 1980.2.1.9A, Recent, north Ubian, Sulu Archipelago, Philippines. 92. Autozooids and vicarious avicularium. 93. Close-up of the avicularium rostrum showing four solid spines. 94. Group of zooids and vicarious avicularium. 95. Close-up of an ooecium. Scale bars: Figs 92, 94 = 200 µm; Figs 93, 95 = 100 µm.
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International Brain Laboratory public data
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OpenNeuro
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