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FIGURE 36. Genus et species indet. A, B, colony 1, GLD4–11, Stn 211 in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 36. Genus et species indet. A, B, colony 1, GLD4–11, Stn 211, rotational profiles; C, D, colony 2, GLD4–12, Stn 255, rotational profiles. Scale bars: 250 µm.
FIGURE 35. Calyssopora clarionensis n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 35. Calyssopora clarionensis n. gen., n. sp. Progressive stages of development of ancestrular and young colonies. A–D, specimen YMG18–01, Stn 24, three-zooid colony; E–H, specimen GLD4–08, Stn 144, four–five-zooid stage; I–L, specimen YMG4–07, Stn 134, seven-zooid stage with central cavity presumably representing incipient incubation chamber; M–P, specimen GLD4–11, Stn 209, eight-zooid stage with paired central cavities. Scale bars: 200 µm.
FIGURE 42. Rallocytus ridiculus n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 42. Rallocytus ridiculus n. gen., n. sp. Holotype, ZIRAS 1/50723. A–D, apical and oblique-lateral rotational views of colony with single dimorphic zooid, its smaller aperture (arrowed) facing frontalwards; E–G, peristomes and apertures of dimorphic zooid and adjacent autozooids; H, malleated colony surface at junction of capitulum and column. Scale bars: A–D, 250 µm; E–H, 100 µm.
FIGURE 33. Calyssopora clarionensis n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 33. Calyssopora clarionensis n. gen., n. sp. General view of holotype and paratype colonies. A, holotype, ZIRAS 1/ 50719, with fully hooded ooeciostome; B, paratype 1, ZIRAS 2/50720, with mostly hooded ooecostome; C, paratype 2, ZIRAS 3/50721, with ooeciopore visible; D, paratype 3, ZIRAS 4/50722, with partially developed ooeciostome not yet concealing ooeciopore. Scale bars: 250 µm.
FIGURE 31. Calyssopora vasiformis n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 31. Calyssopora vasiformis n. gen., n. sp. Holotype, ZIRAS 1/50717. A–D, rotational views of fertile colony; E, H, apical and oblique-lateral views of calyx with gonozooid; F, two autozooidal peristomes, with part of dimpled and alveolate calyx surface; G, close-up of calyx in A; I, ooeciostome and ooeciopore; J, close-up of G, with autozooidal peristomes and small alveoli; K, honeycomb-like surface malleation. Scale bars: A–D, G, H, 200 µm; E, F, J, K, 100 µm; I, 25 µm.
FIGURE 30. Calyssopora volcano n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 30. Calyssopora volcano n. gen., n. sp. Progressive stages of development of ancestrular and young colonies. A, B, specimen YMG4–13, Stn 291; C, D, specimen YMG4–07, Stn 139; E, F, specimen YMG4–14, Stn 358; G, H, specimen YMG4–04, Stn 57; I, J, specimen YMG4–13, Stn 283; K, L, specimen YMG4–13, Stn 300; M, N, specimen GLD4–09, Stn 198; O, P, specimen YMG4–13, Stn 274. A, B, four-zooid stage; C–F, four–five-zooid stages; G–J, five–six-zooid stages; K–P, later submature stages with calyciform colony center adequately structured with trabeculae and alveoli to support gonozooid development. Scale bars: 200 µm.
FIGURE 29. Calyssopora volcano n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 29. Calyssopora volcano n. gen., n. sp. A, D, L, holotype, ZIRAS 1/50714; B, E, G–I, K, paratype 1, ZIRAS 2/ 50715; C, F, J, paratype 2, ZIRAS 3/50716. A–C, oblique profiles of fertile colonies respectively shown in Fig. 28A, B, Fig. 28B, C and Fig. 28E, F; D–F, peristome of gonozooids respectively shown in A–C; G, calyx periphery showing short autozooidal peristomes, shallow alveoli and pores; H, skeletal microstructure of slope of ooeciostome; I, peristomes in oblique profile; J, abfrontal side of peristomes; K, two autozooidal apertures with large alveolus between; L, oblique bilaterally symmetrical autozooidal apertures. Scale bars: A–C, J, 250 µm; D–G, I, K, L, 150 µm; H, 25 µm.
FIGURE 53. Anyuta anastema n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 53. Anyuta anastema n. gen., n. sp. Micro-CT scans of paratype, NIWA 127725, as surface (C) and back-face isosurface renders showing colony interiors. A, view of colony from below; note absence of kenozooids from most of column; B, lateral abfrontal view of two small fascicles with entrance to dimorphic zooid indicated by arrowhead; note relative paucity of communication pores; C–E, exterior and interior views of colony base, showing lateral (C, D) and frontolateral (E) profiles with palisade of elongate-triangular kenozooidal chambers surrounding ancestrular protoecium (pr) and proximal part of its peristome (ap). Scale bars: 100 µm.
FIGURE 48. Haywardozoon pacificum n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 48. Haywardozoon pacificum n. sp. Holotype, ZIRAS 1/50726. A–F, autozooids disposed on serpulid tube, all slightly collapsed through drying; G, H, orificial region showing operculum-like flap; I, autozooid, with dwarf ancestrular at lower right; J, close-up of ancestrula. Scale bars: A, F, 500 µm; B–E, I, 250 µm; G, 200 µm; H, I, 100 µm.
FIGURE 27. Alyonushka echinata n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 27. Alyonushka echinata n. gen., n. sp. Details of morphology. A, C, H, K, holotype, ZIRAS 1/50712; B, D–F, G, I, J, paratype, ZIRAS 2/50713. A, C, apical and oblique views of calyx with gonozooid (ooeciostome arrowed); note variable sizes of alveolar openings; B, D, oblique and near-profile views of calyx with gonozooid, with broken entrance to gonozooid arrowed; E, skeletal ultrastructure of outer peristomial wall; F, G, close-ups of broken entrance to gonozooid; H, lateral view of zooidal peristome with simpler spiky structures than those more proximal at calyx surface; I, J, spinules on interior walls of peristomes; K, variable alveolar openings and spinose texture of gonozooid surface. Scale bars: A–D, 200 µm; E–G, 100 µm; H–K, 50 µm.
FIGURE 28. Calyssopora volcano n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 28. Calyssopora volcano n. gen., n. sp. A, B, holotype, ZIRAS 1/50714, with a single gonozooid; C, D, paratype 1, ZIRAS 2/50715, with two ooeciostomes and therefore two gonozooids presumed; E, F, paratype 2, ZIRAS 3/50716, with possibly newly completed gonozooid, having large alveolate spaces at left-hand periphery. Scale bars: 250 µm.
FIGURE 26. Alyonushka echinata n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 26. Alyonushka echinata n. gen., n. sp. A–C, holotype, ZIRAS 1/50712, rotational views of fertile colony; D–F, paratype, ZIRAS 2/50713, rotational views of fertile colony. Arrows indicate the ooeciostome in all photos. Scale bars: 250 µm.
FIGURE 47. Haywardozoon pacificum n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 47. Haywardozoon pacificum n. sp. Specimens stained in Rose Bengal. A, specimen GLD4–11, Stn 214, zooids on a serpulid tube; B–G, holotype, ZIRAS 1/50726, different views of zooids on a serpulid tube; H–J, specimen GLD4–12, Stn 245, respectively showing very lightly stained zooids on serpulid tube and two zooids seen in transmitted light. Abbreviations: bb, brown body; d, diaphragm; dmd, dilator muscles of diaphragm; g, gut; olf, operculum-like flap; rmtc, retractor muscles of tentacle crown; t, tentacle cluster; v, vestibule. Scale bars: A–H, 500 µm; I, J, 100 µm.
FIGURE 23. Alyonushka filia n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 23. Alyonushka filia n. gen., n. sp. Progressive stages of development of ancestrulate and slightly older colonies. A, B, specimen GLD4–09, Stn 173, at four-zooid stage, with alveoli; C, D, specimen YMG4–14, Stn 363, four-zooid colony with one peristome occluded and spikes on trabeculae; E, F, specimen GLD4–11, Stn 224, also at four-zooid stage but with broader base; G, H, specimen YMG4–14, Stn 365 with more-convex colony center; I, J, specimen YMG4–14, Stn 351, nearsymmetrical four-zooid colony; K, L, specimen GLD4–09, Stn 180, colony with disproportionately thickened base and irregular column margin, suggesting possible regeneration after damage; M, N, specimen GLD4–12, Stn 235, an asymmetrical five-zooid colony; O, P, specimen YMG4–13, Stn 294, with unusually thick basal support. Scale bars: 200 µm.
FIGURE 25. Alyonushka hystricosa n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 25. Alyonushka hystricosa n. gen., n. sp. Holotype, ZIRAS 1/50711. A, ooeciostome; B, calyx margin with autozooidal peristomes, ooeciopore near middle right; C, close-up of peristomes and surface sculpture, ooeciopore at lower right; D, colony base; notice minutely prickled surface; E, oblique view of calyx, ooeciostome to right of center; F, symmetrical alveolus opening between a pair of peristomes. Scale bars: 100 µm.
FIGURE 45 in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 45.?Anyutidae sp. incertae sedis. A–D, rotational views of colony ZIRAS 1/50725; note the highly alveolate colony surface and fascicles of variable size. Scale bars: 500 µm.
FIGURE 52. Alyonushka filia n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 52. Alyonushka filia n. gen., n. sp. Micro-CT scans of paratype, NIWA 127724, as back-face isosurface renders showing colony interiors. A, entire colony in profile; note the density of kenozooidal chambers in the column; B, close-up of distal part of column showing diminished numbers of kenozooids where it broadens into the calyx; C, optical section through gonozooid and ooeciostome, with arrowhead indicating a ledge at inner opening of ooeciostome; D, optical section through base of column showing protoecial dome with ancestrular peristome emerging from its apex (purple) and first daughter zooid (red) also originating from protoecium (its communication pore outside plane of section); note multiple layers of kenozooids; E, three successive sections through ancestrular region, moving upwards from left to right, respectively showing protoecium (red) and first daughter zooid (yellow), narrowing to ancestrular peristome and broadening peristome of daughter zooid. Scale bars: A, B, 250 µm; C–E, 100 µm.
FIGURE 21. Alyonushka filia n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 21. Alyonushka filia n. gen., n. sp. A, holotype, ZIRAS 1/50710, profile of colony with paired gonozooid; B, paratype, NIWA 127724, profile of colony with single gonozooid; C–E, specimen YMG4–13, Stn 299, bilaterally compressed, showing developing gonozooid with continuous floor. Scale bars: A, B, 500 µm; C–E, 250 µm.
FIGURE 22. Alyonushka filia n. gen., n in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 22. Alyonushka filia n. gen., n. sp. A–E, G–L, holotype, ZIRAS 1/50710; E, F, paratype, NIWA 127724. A, frontal (apical) view of colony showing two gonozooids separated by a narrow cleft, each chamber with an ooeciopore (arrows); B, oblique view of A from 8 o'clock perspective, showing two gonozooid mounds separated by cleft (concealed in furrow), each mound with complex spiky alveolate surface; C, same, from different angle, cleft at middle left; D, autozooidal peristomes with linear ridges and barbs, and pores; E, skeletal microstructure of gonozooid surface; F, I, incompletely developed autozooidal peristomes with abundant internal spinules; G, close-up of part of cleft between adjacent gonozooids; H, base of colony with hummocks indicating underlying alveolar/kenozooid-like chambers; note densely prickled surface; J, L, ooeciostomes of the two gonozooids shown in A; K, apical view of mature autozooidal peristome. Scale bars: A, 500 µm; B–D, H, 250 µm; F, G, I, J, L, 100 µm; E, K, 50 µm.
FIGURE 38 in Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining
FIGURE 38. Genus et species indet. Progressive stages of development of ancestrular and young colonies. A–D, specimen GLD4–09, Stn 183, six-zooid stage, with peristomes and alveoli bounded by extrazooidal space(s); later stages shown in E–H (specimen YMG4–06, Stn 80), I–L (specimen GLD4–09, Stn 192) and M–P (specimen YMG18–01, Stn 38). Scale bars: 200 µm.
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