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23 results for “Acanthochitona”
FIG. 2. — Acanthochitona oxum n in Taxonomic study on the Polyplacophora (Chitonida: Ischnochitonidae et Acanthochitonidae) collected by the Marion Dufresne (MD55) expedition, with description of a new species
FIG. 2. — Acanthochitona oxum n. sp.; dorsal view; A, valve i; B, valve v; C, valve viii; D, E: details of the valve v, showing pustules with aesthetes (D) and detail of a pustule (E); F, details of the perinotum; G‒H: detail of the radula, radula, panoramic (G) and dorsal (H) views; I, details of the hyponotum. Scale bars: A-C, 100 μm; D, I, 20 μm; E, 3 μm; F, 100 μm; G, 30 μm; H, 10 μm.
Fig. 39. Acanthochitona jugotenuis, holotype H2565 in Primary types in the collection of molluscs in the KwaZulu-Natal Museum: Polyplacophora
Fig. 39. Acanthochitona jugotenuis, holotype H2565/T2396. Scale bar = 1 mm.
FIGURE 20. Acanthochitona interglacialis n in Late Pleistocene Red Sea Mollusca: 1. Polyplacophora
FIGURE 20. Acanthochitona interglacialis n. sp. A–C. Saudi Arabia, Gulf of Aqaba, Ash Shaykh Humayd (St. 8), Late Pleistocene (last interglacial MIS5e), Holotype MZB 50560, intermediate valve, width 1.6 mm, dorsal view, detail of tegmentum surface of pleural area and frontal view. Scale bar: 100 µm (B).
FIGURE 19. Acanthochitona mastalleri Strack, 1989. A–B, E–I in Late Pleistocene Red Sea Mollusca: 1. Polyplacophora
FIGURE 19. Acanthochitona mastalleri Strack, 1989. A–B, E–I. Saudi Arabia, Gulf of Aqaba, Ash Shaykh Humayd, Late Pleistocene (last interglacial MIS5e). A–B. MZB 50557a, head valve (St. 9), width 3.3 mm, dorsal and lateral views. E–F. MZB 50557b, tail valve (St. 9), width 3.1 mm, dorsal and lateral views. G–I. MZB 50558, tail valve (St. 8), width 3.2 mm, dorsal, ventral and lateral views. C–D. Egypt, Hurghada (St. 14), Late Pleistocene (last interglacial MIS5e), MZB 50559, intermediate valve, width 3.9 mm, dorsal and ventral views.
FIGURE 37. Acanthochitona ostreaphila n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 37. Acanthochitona ostreaphila n. sp., Northern Vietnam, Gulf of Tongking, Cat Ba Id., holotype, BL 5 mm: A. Tuft and dorsal spicules; B. Valve VIII, detail of tegmentum of antemucronal area; C. Dorsal spicules, marginal needles and ventral spicules; D. Radula.
FIGURE 38. Acanthochitona ostreaphila n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 38. Acanthochitona ostreaphila n. sp., Northern Vietnam, Gulf of Tongking, Cat Ba Id., holotype, BL 5 mm: A. Needles of tufts; B. Dorsal spicules; C. Marginal needle; D. Ventral spicules; E. Head of major lateral tooth of radula; F. Central and first lateral teeth of radula; G. Pustule of lateropleural area of tegmentum with aesthete pores. Scale bars: 100 µm.
FIGURE 30. Acanthochitona lanae n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 30. Acanthochitona lanae n. sp., Vietnam, near Da Nang, holotype, BL 8 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 in lateropleural area; F. Valve V, rostral view; G, Valve VIII, lateral view.
FIGURE 32. Acanthochitona lanae n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 32. Acanthochitona lanae n. sp., Vietnam, near Da Nang, holotype, BL 8 mm: A. Needles of tufts; B. Dorsal spicules; C. Marginal needle and spicules; D. Ventral spicules; E. Head of major lateral tooth of radula; F. Central and first lateral teeth of radula; G. Pustule of lateropleural areas of tegmentum with aesthete pores. Scale bars: 100 µm.
FIGURE 28. Acanthochitona condaoi n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 28. Acanthochitona condaoi n. sp., Southern Vietnam, Con Dao Id., holotype, BL 5 mm: A. Radula; B. Pustules in antemacronal area of valve VIII; C, D. Tufts, dorsal needles and spicules and marginal needles.
FIGURE 27. Acanthochitona condaoi n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 27. Acanthochitona condaoi n. sp., Southern Vietnam, Con Dao Id., holotype, BL 5 mm: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve V, rostral view; E. Valve IV, ventral view; F. Valve V, detail of tegmentum in lateropleural area; G. Valve VIII, detail of tegmentum in antemucronal and postmucronal areas; H. Valve VIII, lateral view.
FIGURE 34. Acanthochitona nigra n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 34. Acanthochitona nigra n. sp., Northern Vietnam, Gulf of Tongking, Cat Ba Id., holotype, BL 5 mm: A, B. Tufts, dorsal spicules, marginal needles and spicules and ventral spicules; C. Tufts, dorsal spicules and marginal needles and spicules; D. Radula.
FIGURE 31. Acanthochitona lanae n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 31. Acanthochitona lanae n. sp., Vietnam, near Da Nang, holotype, BL 8 mm: A. Valve VIII, detail of tegmentum in antemucronal area; B. Dorsal, marginal and ventral spicules, needles and spicules; C. Tufts, dorsal spicules, marginal needles and spicules and ventral spicules; D. Radula.
FIGURE 33. Acanthochitona nigra n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 33. Acanthochitona nigra n. sp., Northern Vietnam, Gulf of Tongking, Cat Ba Id., holotype, BL 5 mm: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve IV, ventral view; E, F. Valve V, detail of tegmentum in lateropleural area; G. Valve V, rostral view; H. Valve VIII, lateral view.
FIGURE 29. Acanthochitona condaoi n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 29. Acanthochitona condaoi n. sp., Southern Vietnam, Con Dao Id., holotype, BL 5 mm: A. Needles of tufts; B. Dorsal needles and spicules; C. Marginal needle; D. Ventral spicules; E. Head of major lateral tooth of radula; F. Central and first lateral teeth of radula; G. Pustule of lateropleural area of tegmentum with aesthete pores. Scale bars: 100 µm.
FIGURE 36. Acanthochitona ostreaphila n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 36. Acanthochitona ostreaphila n. sp., Northern Vietnam, Gulf of Tongking, Cat Ba Id., holotype, 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 in jugal and lateropleural areas; F. Valve V, rostral view; G. Valve VIII, lateral view.
FIGURE 35. Acanthochitona nigra n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters
FIGURE 35. Acanthochitona nigra n. sp., Northern Vietnam, Gulf of Tongking, Cat Ba Id., holotype, BL 5 mm: A. Needles of tufts; B. Dorsal spicules; C. Marginal needle and spicules; D. Ventral spicules; E. Head of major lateral tooth of radula; F. Central and first lateral teeth of radula; G. Pustule of lateropleural areas of tegmentum with aesthete pores. Scale bars: 100 µm.
FIGURE 6. Acanthochitona mahensis. Holotype M14376 in Redescription of Acanthochitona mahensis Winckworth, 1927 (Polyplacophora, Acanthochitonidae) from Indian Coasts
FIGURE 6. Acanthochitona mahensis. Holotype M14376/2 (ZSI, Kolkata). A. Valve I, dorsal view. B. Valve II, dorsal view. C. Valve VI, dorsal view. D. Valve VI, ventral view. Scale bar: 1 mm (A–D).
FIGURE 4. Acanthochitona mahensis. A in Redescription of Acanthochitona mahensis Winckworth, 1927 (Polyplacophora, Acanthochitonidae) from Indian Coasts
FIGURE 4. Acanthochitona mahensis. A. Piece of perinotum with three tufts of needle, and with marginal spines, ZSI/WGRC/ I.R.-INV.21907 BL 11.1 mm. B. Part of perinotum showing the dorsal, marginal and ventral spines, ZSI/WGRC/I.R.-INV.21908 BL 14.1 mm. Scale bars: 200 µm.
FIGURE 5. Acanthochitona mahensis. A, B in Redescription of Acanthochitona mahensis Winckworth, 1927 (Polyplacophora, Acanthochitonidae) from Indian Coasts
FIGURE 5. Acanthochitona mahensis. A, B. ZSI/WGRC/I.R.-INV.21907, BL 11.1 mm. C, D. ZSI/WGRC/I.R.-INV.21908, BL14.1 mm. A, C. Part of radula. B. Central and lateral tooth of radula. D. Central tooth of radula. Scale bars: 40 µm (A, B); 100 µm (C); 25 µm (D).
FIGURE 3 in Redescription of Acanthochitona mahensis Winckworth, 1927 (Polyplacophora, Acanthochitonidae) from Indian Coasts
FIGURE 3. Acanthochitona mahensis ZSI/WGRC/I.R.-INV.21907, BL 11.14 mm. A. Valve I, dorsal view. B. Valve II, dorsal view. C. Valve V, dorsal view. D. Valve VIII, dorsal view. E. Valve V, tegmentum sculpture in jugal and pleurolateral areas. F. Valve V, rostral view. G. Valve IV, ventral view. H. Valve VIII, lateral view. Scale bars: 500 µm (A–D, F, G, H); 200 µm (E).
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