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91 results for “Lepidopleurida”
FIGURE 11–12. Leptochiton samadiae n in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 11–12. Leptochiton samadiae n. sp., Solomon 2 sta. CP2285. Figure 11 (at left). SEM images: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve II, ventral view; E. Valve V, detail of tegmentum surface; F. Valve VI, rostral view; G. Valve VIII, right lateral view. Figure 12 (at right). A–C. SEM images: A. Detail showing half section of radula; B. Dorsal scales encrusted with sediment from body surface on living animal; C. Girdle section and a fragment of an intermediate valve showing dorsal and ventral scales, separated by median disturbance; D–K, line drawings: D. Half a radula row; E. Head of major lateral tooth; F. Central and first lateral teeth; G. Aesthete group; H. Intersegmental spicule; I. Dorsal scale; J. Marginal spicule; K. Marginal spicule; L. Ventral scale.
FIGURE 13–14. Leptochiton longisetosus n in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 13–14. Leptochiton longisetosus n. sp., Boa 1 sta. CP2429. Figure 13 (at left): SEM images: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve VIII, left lateral view; E. Valve V, detail of tegmentum; F. Valve IV, rostral view; G. Half of valve VI, ventral view of right half of valve. Figure 14 (at right). A–F, SEM images: A. Radula, detail showing half of radula, from mid part of mature radular ribbon; B. Marginal bristles (at top) and spicules and dorsal spicules (at bottom); C. Dorsal spicules, marginal spicules and bristles (lying across field); D. Girdle surface, flattened to show both dorsal and ventral armature; median disturbance is the margin; E. Dorsal spicules; F. Isolated intersegmental bristles; G– O, line drawings: G. Head of major lateral tooth; H.,I. Central and first lateral teeth from different parts of the radular ribbon; J. Aesthete group; K. Intersegmental bristle, in life, longer than can be shown here (see F); L. Dorsal spicule-scale with cross-section above; M. Marginal spicule; N. Marginal bristle; O. Ventral scale.
FIGURE 17–18. Leptochiton schwabei n in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 17–18. Leptochiton schwabei n. sp., Salomon 1 sta. CP1783. Figure 17 (at left). SEM images: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve VIII, left lateral view; E., F. Valve V, detail of tegmentum in central (E) and lateral (F) areas; G. Valve IV, ventral view; H. Valve VI, rostral view. Figure 18 (at right). A–D, SEM images: A. Central and major lateral teeth of radula from one side, from mature part of radular ribbon; B. Girdle surface, flattened to show both dorsal and ventral armature; marginal bristles flattened onto dorsal part (at top); C. Dorsal scales and marginal bristle; D. Dorsal, marginal and ventral parts of girdle with intersegmental bristles from mid-part of body; E–L, line drawings: E. Head of major lateral tooth; F. Central and first lateral tooth; G. Aesthete group; H. Intersegmental bristle; I. Dorsal scale; J., K. Marginal spicule and bristle (respectively); L. Ventral scale.
FIGURE 15–16. Leptochiton clarki n in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 15–16. Leptochiton clarki n. sp., Salomon 1 sta. CP1751. Figure 15 (at left). SEM images: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve IV, ventral view; E. Valve V, tegmentum detail; F. Valve VI, rostral view; G. Valve VIII, left lateral view. Figure 16 (at right). A–D. SEM images: A. Detail of central area of radula, from middle part of mature radular ribbon; B. Girdle surface, flattened to show both dorsal (perinotum, at top) and ventral (below) armature; median disturbance is the margin; C. Dorsal scales from mid-body; D. Marginal bristles and spicules and dorsal scales (at bottom); E–L, line drawings: E. Head of major lateral tooth; F. Central and first lateral teeth; G. Aesthete group; H. Intersegmental bristle; I. Dorsal scale; J. Marginal spicule; K. Marginal bristle; L. Ventral scale.
FIGURE 9–10. Leptochiton dykei n in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 9–10. Leptochiton dykei n. sp., Boa1 sta. CP2412. Figure 9 (at left). SEM images: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve V, lateral view; E. Valve V, detail of tegmentum showing aesthete arrangement; F. Valve IV, rostral view; G. Valve VI, ventral view; H. Valve VIII, right lateral view. Figure 10 (at right). A–D, N. SEM images: A. Central part of radula; B. Section of perinotum from mid-body, with intersegmental bristles (extending at top), dorsal scales, marginal spicules and bristles and ventral scales, separated by median disturbance with marginal spicules and bristles; C. Dorsal scales; D. Dorsal scales and marginal bristles in cupules and spicules; E–M, line drawings: E. Half of a radula row; F. Head of major lateral tooth; G. Central and first lateral teeth of radula; H. Aesthete group; I. Intersegmental bristle (longer than can be shown on page, see B); J. Dorsal scale; K., L. Marginal spicule and bristle (respectively); M. Ventral scale; N. SEM image of ventral scales (at same scale as M).
FIGURE 3 in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 3. Distribution of collecting stations and chitons recovered on the MNHN expeditions Salomon 1 and Salomon 2 in the Solomon Islands (inset map shows the area relative to the total region covered in this study). Black solid dots indicate stations where chitons where collected; grey circles indicate additional stations that did not include any polyplacophorans. Numbers indicate expedition station numbers for stations where chitons were recovered.
FIGURE 1–2 in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 1–2. Distribution of collecting stations and chitons recovered on the MNHN collecting expeditions Boa 1 in Vanuatu (Figure 1, at left) and Panglao 2005 in the Philippines (Figure 2, at right). Black solid dots indicate stations where chitons where collected; grey circles indicate additional stations that did not include any polyplacophorans; grey solid dots in Figure 1 are stations where chitons were reported from the MUSORSTUM 8 expedition (Sirenko, 2001). Numbers indicate expedition station numbers for stations where chitons were recovered.
FIGURE 7–8. Leptochiton angustidens n in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 7–8. Leptochiton angustidens n. sp., Boa 1 sta. CP2432. Figure 7 (at left): SEM images: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve IV, rostral view; E. Valve VII, ventral view; F. Valve V, tegmentum detail showing aesthete pores; G. Valve VII, untreated valve surface, showing protruding aesthete caps; H. Valve VIII, left lateral view. Figure 8 (at right). A–D, SEM images: A., B. Central area of radula from middle of mature part of radular ribbon (B. from further anterior); C. Dorsal scales; D. Dorsal scales (at upper right) and ventral scales (at lower left) and marginal spicules, broken and lying on surface; E–L, line drawings: E. Head of major lateral tooth; F. Central and first lateral teeth of radula; G. Aesthete group; H. Intersegmental spicule; I., J. Dorsal scales; K. Marginal spicule; L. Ventral scale.
FIGURE 5–6. Leptochiton consimilis n in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 5–6. Leptochiton consimilis n. sp., Salomon 2 sta. CP 2216. Figure 5 (at left): SEM images: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve IV, rostral view; E. Valve V, detail of tegmentum; F. Valve VII, ventral view; G. Valve VIII, left lateral view. FIGURE 6 (at right): A–D, SEM images: A. Detail of radula, central and major lateral teeth from middle of mature part of radula; B. Dorsal spicules, mid body; C. Dorsal and marginal (lower) spicules; D. Ventral scales; E–K, line drawings: E. Head of major lateral tooth; F. Central and first lateral teeth of radula; G. Aesthete group in central area; H. Intersegmental spicule, imbedded in chitinous cups; I. Dorsal scale; J. Marginal spicule; G. Ventral scale.
FIGURE 4 in Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species
FIGURE 4. Preserved specimens of the seven new species described. In all pictures, anterior is at top and scale bars are 1 mm. A. Leptochiton consimilis n. sp., lateral view of right side, Solomon Islands, Salomon 2 sta. CP2216. B. Leptochiton angustidens n. sp., lateral view of right side (at left) and dorsal view (at right). Specimen is from Vanuatu, Boa 1 sta. CP2432. C. Leptochiton dykei n. sp., lateral view of right side (at left) and dorsal view (at right), Vanuatu, Boa 1 sta. CP2412. D. Leptochiton samadiae n. sp., lateral view of right side (at left) and dorsal view (at right), Solomon Islands, Salomon 2 sta. CP2285. E. Leptochiton longisetosus n. sp., lateral view of right side (at left), Vanuatu, Boa 1 sta. CP2422. F. Leptochiton clarki n. sp., paratype, lateral view, Solomon Islands, Salomon 1 sta. CP1751. G. Leptochiton schwabei n. sp., paratypes, right lateral view (at left), and dorsal view (at right) in different specimens, both from Solomon Islands, Salomon 1 sta. CP1783.
FIGURE 19 in New shelf and bathyal Philippine leptochitons (Mollusca: Polyplacophora Lepidopleurida)
FIGURE 19. Leptochiton torishimensis, Philippines (MNHN-IM-2013-67042), BL 11.0 mm: A. Valve I, dorsal view; B. Valve II, dorsal view; C. Valve V, dorsal view; D. Valve VIII, dorsal view; E. Valve V, detail of tegmentum in central area; F. Valve V, rostral view; G. Valve VIII, lateral view; H. valve IV, ventral view.
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