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44 results for “Scobina”
FIGURE 38 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 38. Scanning Electron Microscope (SEM) images of dermal denticles of Potamotrygon garmani, sp. nov. (UNT 2173). A. Dorsal rostral region. B. Dorsal rostral region in detail. C. Dorsal head region. D. Dorsal head region in detail. E. Dorsal tail region. F. Dorsal tail region in detail. Abbreviations: Bp, basal plate; Br, basal ridge; Cr, coronal ridge; Co, corona; Cd, coronal dichotomy; Cp, coronal plate.
FIGURE 44 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 44. Holotype of Potamotrygon limai (MZUSP 104031, adult male, 498 mm DW, rio Jamari, rio Madeira basin). A. Dorsal view. B. Ventral view.
FIGURE 33 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 33. Holotype of Potamotrygon garmani, sp. nov. (UNT 2174, adult? male, 341 mm DW, rio Paranã, rio Tocantins basin, state of Tocantins, Brazil). A. Dorsal view. B. Ventral view.
FIGURE 31 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 31. Skeletal anatomy (from radiographs) of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Ventral view of anterior disc and jaws. B. Angular cartilages, left side. C. Pectoral girdle, ventral view. D. Tail thorns and clasper skeleton. E. Pelvic girdle and clasper. Scale bar: 10 mm. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium.
FIGURE 35 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 35. Details of Potamotrygon garmani, sp. nov. (UNT 2174, adult? male, 341 mm DW). A. Dorsal head and snout. B. Dorsal view of tail origin, pelvic fins, and dorsal thorn rows. C. Mouth and nostrils. D. Ventral view of pelvic fins, clasper and cloaca. E. Dorsal clasper.
FIGURE 29 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 29. Scanning Electron Microscope (SEM) images of dermal denticles of Potamotrygon amazona, sp. nov. (based on MZUSP 117345) A. Dorsal rostral region. B. Dorsal rostral region in detail. C. Dorsal head region. D. Dorsal head region in detail. E. Dorsal caudal region. F. Dorsal caudal region in detail. Abbreviations: Bp, basal plate; Br, basal ridge; Cr, coronal ridge; Co, corona; Cd, coronal dichotomy; Cp, coronal plate.
FIGURE 41 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 41. Illustration of the clasper skeleton of Potamotrygon garmani, sp. nov. (based on UNT uncat.) A. Dorsal view. B. Ventral view. Abbreviations: AT, acessory terminal; AX, axial cartilage; BE, beta cartilage; B1, first basal segment; B2, second basal segment; DM, dorsal marginal; DT2, dorsal terminal 2; VM, ventral marginal; VT, ventral terminal.
FIGURE 28 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 28. Color variation in Potamotrygon amazona, sp. nov. A. MZUSP 117347 (adult male, 560 mm DW). B. MZUSP 117345 (adult male, 584 mm DW).
FIGURE 43 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 43. Distribution of species of the Potamotrygon scobina complex. Red circle: Potamotrygon scobina; red star: type locality of Potamotrygon scobina; purple diamond: Potamotrygon limai; yellow pentagon: Potamotrygon adamastor, sp. nov.; blue square: Potamotrygon amazona, sp. nov.; green triangle: Potamotrygon garmani, sp. nov.
FIGURE 27 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 27. Teeth of Potamotrygon amazona, sp. nov. (MZUSP 117345) A, B. Upper jaw. C, D. Lower jaw. Scale bar = 2 mm.
FIGURE 25 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 25. Paratype of Potamotrygon amazona, sp. nov. (MZUSP 117346, adult female, 405 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). A. Dorsal view. B. Ventral view.
FIGURE 24 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 24. Holotype of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). A. Dorsal view. B. Ventral view.
FIGURE 26 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 26. Morphological details of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Dorsal head and snout region. B. Mouth and nostrils. C. Dorsal view of tail origin, pelvic fins, and dorsal spine rows. D. Ventral view of pelvic fins, claspers and cloaca. E. Dorsal clasper.
FIGURE 32 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 32. Illustration of the clasper skeleton of Potamotrygon amazona, sp. nov. (MZUSP 117347, adult male, 560 mm DW). A. Dorsal view. B. Ventral view. Abbreviations: AT, acessory terminal; AX, axial cartilage; BE, beta cartilage; B1, first basal segment; B2, second basal segment; DM, dorsal marginal; DT2, dorsal terminal 2; VM, ventral marginal; VT, ventral terminal.
FIGURE 23 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 23. Illustration of the clasper skeleton of Potamotrygon adamastor, sp. nov. A. Dorsal view. B. Ventral view. Abbreviations: AT, acessory terminal; AX, axial cartilage; BE, beta cartilage; B1, first basal segment; B2, second basal segment; DM, dorsal marginal; DT2, dorsal terminal 2; VM, ventral marginal; VT, ventral terminal.
FIGURE 22 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 22. Skeletal anatomy (from radiographs) of Potamotrygon adamastor, sp. nov. (MZUSP 104662, adult female, 545 mm DW). A. Ventral view of anterocentral disc. B. Ventral skull and jaws. C. Angular cartilages, right side. D. Ventral pectoral girdle. E. Ventral pelvic girdle and fins. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium.
FIGURE 40 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 40. Skeletal anatomy (from radiographs) of Potamotrygon garmani, sp. nov. (UNT 2178, adult female, 428 mm DW). A. Ventral view of the anterior disc, jaws and pectoral girdle. Scale bar = 15 mm. B. Pelvic girdle, pelvic radials, and base of tail. Scale bar = 10 mm. C. Angular cartilages, right side. Scale bar = 5 mm. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium.
FIGURE 37 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 37. Color variation in Potamotrygon garmani, sp. nov. A. UNT 2173 (subadult male, 405 mm DW) B. UNT 2185 (juvenile male, 273 mm DW).
FIGURE 20 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 20. Scanning Electron Microscope (SEM) images of the dermal denticles of Potamotrygon adamastor, sp. nov. (MZUSP 104664). A. Rostral region. B. Rostral region in detail. C. Dorsal head region. D. Dorsal head region in detail. E. Dorsal caudal region. F. Dorsal caudal region in detail. Abbreviations: Bp, basal plate; Br, basal ridge; Cr, coronal ridge; Co, corona; Cd, coronal dichotomy; Cp, coronal plate.
FIGURE 21 in Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography
FIGURE 21. Ventral lateral-line canals of Potamotrygon adamastor, sp. nov. (based on MZUSP 104664). A. Overall arrangement. B. Anterior portion in detail. Abbreviations: ACH, angular component of hyomandibular canal; AJL, anterior jugular loop; AST, anterior subpleural tubules; CON, orbitonasal component of supraorbital canal; HYC, hyomandibular canal; IOC, infraorbital canal; IOL, infraorbital loop; JCH, jugular component of hyomandibular canal; JUG, jugular canal; NAS, nasal canal; NIL, nasointerior loop; PJL, posterior jugular loop; PNC, prenasal component of nasal canal; PNL, prenasal loop; PST, posterior subpleural tubules; SOC, supraorbital canal; SOL, suborbital loop; SOI, suborbital component of infraorbital canal; SPC, subpleural component of hyomandibular canal; SPL, subpleural loop; SRC, subrostral component of supraorbital canal.
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