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215 results for “Leptochiton”
FIGURE 3. Leptochiton kerguelensis Haddon, 1864 in Shallow and deep-sea chitons of the genus Leptochiton Gray, 1847 (Mollusca: Polyplacophora: Lepidopleurida) from Peruvian and Chilean waters
FIGURE 3. Leptochiton kerguelensis Haddon, 1864, (ZISP 2257). Beagle Channel, RV Victor Hensen, st.1213. BL—4.0 mm. A, B. Central portion of radula.
FIGURE 2. Leptochiton kerguelensis Haddon, 1864 in Shallow and deep-sea chitons of the genus Leptochiton Gray, 1847 (Mollusca: Polyplacophora: Lepidopleurida) from Peruvian and Chilean waters
FIGURE 2. Leptochiton kerguelensis Haddon, 1864, (ZISP 2257). Beagle Channel, RV Victor Hensen, st.1213. BL—4.0 mm. A. Tegmentum of valve V; B, C. Armature of girdle; D. dorsal, marginal and ventral scales.
FIGURE 5. Leptochiton medinae Plate, 1899 in Shallow and deep-sea chitons of the genus Leptochiton Gray, 1847 (Mollusca: Polyplacophora: Lepidopleurida) from Peruvian and Chilean waters
FIGURE 5. Leptochiton medinae Plate, 1899, (ZISP 2258). Magellan Strait, RV Victor Hensen st.884, BL—5 mm. A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve IV, ventral view; E. Valve V, detail of tegmentum surface of central area; F. Valve VIII, lateral view; G. Valve V, rostral view.
FIGURE 4. Leptochiton kerguelensis Haddon, 1864 in Shallow and deep-sea chitons of the genus Leptochiton Gray, 1847 (Mollusca: Polyplacophora: Lepidopleurida) from Peruvian and Chilean waters
FIGURE 4. Leptochiton kerguelensis Haddon, 1864, (ZISP 2257). Beagle Channel, RV Victor Hensen, st.1213. BL—4.0 mm. A. Sutural needle; B. Sutural scale; C. Dorsal scale; D. Marginal needle; E. Marginal scale; F. Ventral scale; G. Central and two lateral teeth; H. Heads of major lateral tooth; I. Aesthete in central area. Scale bar 100 µm (A–H).
FIGURE 1. Leptochiton kerguelensis Haddon, 1864 in Shallow and deep-sea chitons of the genus Leptochiton Gray, 1847 (Mollusca: Polyplacophora: Lepidopleurida) from Peruvian and Chilean waters
FIGURE 1. Leptochiton kerguelensis Haddon, 1864, (ZISP 2257). Beagle Channel, RV Victor Hensen, st.1213. BL—4.0 mm. A. Complete specimen, dorsal view; B. Complete specimen, lateral view; C. Valve I, dorsal view; D. Valve V, dorsal view; E. Valve VIII, dorsal view; F. Valve IV, ventral view; G. Valve VIII, lateral view; H. Valve V, rostral view.
FIGURE 4. Leptochiton milwaukensis n in The chitons of the family Leptochitonidae (Mollusca: Polyplacophora) from the Emperor Seamounts, Pacific Ocean
FIGURE 4. Leptochiton milwaukensis n. sp., Pacific Ocean, Emperor Seamounts, Milwaukee Seamount, 675 m, holotype (ZIN 2473) BL 3.4 mm. A. Sutural needle, dorsal and ventral scales. B. Central, first lateral and major lateral teeth in non-working part of radula. C. Teeth in working (above) and in non-working (below) parts of radula. D. Central, first lateral and major lateral teeth in working part of radula.
FIGURE 3. Leptochiton milwaukensis n in The chitons of the family Leptochitonidae (Mollusca: Polyplacophora) from the Emperor Seamounts, Pacific Ocean
FIGURE 3. Leptochiton milwaukensis n. sp., Pacific Ocean, Emperor Seamounts, Milwaukee Seamount, 675 m, holotype (ZIN 2473) BL 3.4 mm. A. Dorsal scales, marginal needles. B. Dorsal scales, marginal needles and scales. C. Sutural needles. D. Dorsal and ventral scales.
FIGURE 2. Leptochiton milwaukensis n in The chitons of the family Leptochitonidae (Mollusca: Polyplacophora) from the Emperor Seamounts, Pacific Ocean
FIGURE 2. Leptochiton milwaukensis n. sp., Pacific Ocean, Emperor Seamounts, Milwaukee Seamount, 675 m, holotype (ZIN 2473) BL 3.4 mm. A. Valve I, dorsal view. B. Valve V, dorsal view. C. Valve IV, dorsal view. D. Valve II, dorsal view. E. Valve V, detail of tegmentum in central area. F. Valve V, rostral view. G. Whole specimen, dorsal and lateral views.
FIGURE 5. Leptochiton milwaukensis n in The chitons of the family Leptochitonidae (Mollusca: Polyplacophora) from the Emperor Seamounts, Pacific Ocean
FIGURE 5. Leptochiton milwaukensis n. sp., Pacific Ocean, Emperor Seamounts, Milwaukee Seamount, 675 m, holotype (ZIN 2473) BL 3.4 mm. A. Sutural needle. B. Dorsal scales, dorsal and lateral views. C. Marginal needle. D. Marginal scale. E. Ventral scale. F, G. Aesthete group (which area). H. Head of major lateral teeth. I. Central and first lateral teeth of radula in non working part. J. Central and first lateral teeth of radula in working part of radula. Scale bar 100 µm.
Fig. 12 in Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae)
Fig. 12 Scanning electron micrographs of juvenile Tripoplax cowani, ZSM Mol 20080793. (A) Dorsal view of head valve. (B) Dorsal view of second valve. (C) Dorsal view of tail valve. (D) Left lateral view of tail valve. (E) Perinotum. (F) Hyponotum. Scale bars: A–D =1 mm; E, F= 100 µm
Fig. 15 in Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae)
Fig. 15 Scanning electron micrographs of Placiphorella sp., ZSM Mol 20041044. (A, B) Perinotum spicules in situ. (C) Ventro-marginal girdle elements, in situ. (D) Bristle, view from ventro-marginal side of girdle. (E) Spicules of precephalic ten- tacles, in situ. (F) Anterior portion of radula. Scale bars: A= 50 µm; B–F=100 µm
Fig. 9 in Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae)
Fig. 9 Scanning electron micrographs of Callochiton puniceus, ZSM Mol 20061006. (A) Dorsal view of head valve. (B) Dorsal view of second valve. (C) Dorsal view of tail valve. (D) Left lateral view of tail valve. (E) Dorso-marginal view of girdle. (F) Hyponotum. Scale bars: A–D =1 mm; E, F=100 µm
Fig. 8 in Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae)
Fig. 8 Scanning electron micrographs of Callochiton puniceus, ZSM Mol 20070685. (A) Dorsal view of head valve. (B) Dorsal view of second valve. (C) Dorsal view of tail valve. (D) Left lateral view of tail valve. (E) Dorso-marginal view of girdle. (F) Hyponotum. Scale bars: A–D =1 mm; E, F= 100 µm
Fig. 6 in Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae)
Fig. 6 Scanning electron micrographs of Leptochiton medinae, ZSM Mol 20070928. (A) Dorsal view of tail valve. (B) Left lateral view of tail valve. (C) Detail of antemucronal area of tail valve. (D) Perinotum. (E) Marginal fringe of girdle. (F) Hyponotum. Scale bars: A, B= 1 mm; C–F=100 µm
Fig. 5 in Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae)
Fig. 5 Scanning electron micrographs of (A–D) Leptochiton laurae n. sp., holotype. (E, F) L. medinae, ZSM Mol 20070928. (A) Dorso-marginal girdle. (B) Ventro-marginal girdle. (C) Anterior portion of radula. (D) Detail of radula. (E) Anterior portion of radula. (F) Lateral view of anterior portion of radula. Scale bars: 100 µm
Fig. 3 in Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae)
Fig. 3 Scanning electron micrographs of Leptochiton americanus, ZSM Mol 20033319. (A) Perinotum. (B) Hyponotum. (C) Anterior portion of radula. (D) Anteriormost row of radula, showing central, first and second lateral teeth. Scale bars: A, B, D = 50 µm; C=100 µm
Fig. 1 in Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae)
Fig. 1 Lepidopleurid deepwater Polyplacophora from Chile. (A–D) Leptochiton americanus, holotype; (E–I) L. sp., ZSM Mol 20070757; (J) L. laurae n. sp., holotype; (K) L. medinae, ZSM Mol 20070928; (L–N) L. belknapi, ZSM Mol 20070758 (L) and ZSM Mol 20041050. (A, H) Dorsal view of complete specimen, anterior at top; (B, E) dorsal view of tail valve; (C, F) ventral view of tail valve with angle of apophyses indicated (C=93°; F=77°); (D, G) right lateral view of tail valve; (I) ventral view of complete specimen, anterior at left, showing extent of ctenidia; (J, L) left lateral view of complete specimen; (M) top to bottom: dorsal views of head, second and tail valves; Scale bars: A, H–L= 5 mm; B–G, M =2 mm
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.
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