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9 results for “Asaphidae”
FIG. 8 in Diversification of Asaphellus Callaway, 1877 (Asaphidae: Trilobita) during the Tremadocian in South West Gondwana (Cordillera Oriental, Argentina)
FIG. 8. — Asaphellus stenorhachis (Harrington, 1938): A, cranidium, dorsal view, CEGH-UNC 25736; B, cephalon, latex cast, dorsal view, CEGH-UNC 25737; C, hypostoma, dorsal view, CEGH-UNC 25738; D, right free cheek, dorsal view, CEGH-UNC 25739; E, dorsal view of a complete specimen, CEGH-UNC 25740; F, right free cheek, dorsal view, CEGH-UNC 25741; G, pygidium and articulated thorax, dorsal view, CEGH-UNC 25742; H, cranidium with incomplete thorax and fragmentary pygidium, latex cast, dorsal view, CEGH-UNC 25743; I, cranidium with articulated thorax and pygidium, dorsal view, CEGH-UNC 25744; J-L, pygidia, dorsal view; J, CEGH-UNC 25745; K, CEGH-UNC 25746; L, CEGH-UNC 25747; M, pygidium and fragmentary articulated thorax, dorsal view, CEGH-UNC 25748. A, D, J, K, are preserved in coquinas. All specimens come from Quebrada del Arenal, Santa Rosita Formation, Santa Victoria Group; A-C, E, G-I, L, come from DLA 32; D, J, K, from DLA 37; F, from DLA 34; M, from DLA 31. Scale bars: B, E-G, I, L, 0.5 cm; A, C, D, H, J, K, M, 0.25 cm.
FIG. 5 in Diversification of Asaphellus Callaway, 1877 (Asaphidae: Trilobita) during the Tremadocian in South West Gondwana (Cordillera Oriental, Argentina)
FIG. 5. — Trends in the relative abundance of Asaphellus Callaway, 1877 across different depositional environments in Cordillera Oriental. Each pie-chart is based on the mean relative abundance of all samples coming from the given environment. Asaphellus abundance is indicated in white and other genera in grey. The Tr1 shoreface is not recorded. Data from Balseiro et al. (2011a, b) and Balseiro & Waisfeld (2014).
FIG. 6 in Diversification of Asaphellus Callaway, 1877 (Asaphidae: Trilobita) during the Tremadocian in South West Gondwana (Cordillera Oriental, Argentina)
FIG. 6. — Type specimens of Asaphellus catamarcensis Kobayashi, 1935 (USNM 94136), Angosto de Pascha, Pascha-Incamayo area: A, lectotype in dorsal view (USNM 94136D); B, C, pygidium in dorsal view (USNM 94136C); D, free cheek in dorsal view (USNM 94136B). Scale bars: A, D, 0.5 cm; B, C, 0.25 cm.
FIG. 4 in Diversification of Asaphellus Callaway, 1877 (Asaphidae: Trilobita) during the Tremadocian in South West Gondwana (Cordillera Oriental, Argentina)
FIG. 4. — Trilobite rank-ordered abundance distributions for different samples from the offshore facies in Cordillera Oriental. Relative abundance is logged on the y axis, and taxa are ordered according to their relative abundance on the x axis. Asaphellus Callaway, 1877 is indicated in white. DLA stands for the Quebrada del Arenal (Tremadocian), Vz stands for the Quebrada Vizcacha (Cambrian Stage 10), and TotA stands for the Quebrada Totora (Cambrian Stage 10). The data, nomenclature, and sample location for the Cambrian outcrops come from Balseiro et al. (2011b).
FIG. 10. — Asaphellus isabelae n in Diversification of Asaphellus Callaway, 1877 (Asaphidae: Trilobita) during the Tremadocian in South West Gondwana (Cordillera Oriental, Argentina)
FIG. 10. — Asaphellus isabelae n. sp.: A, hypostoma, latex cast, dorsal view, CEGH-UNC 25749; B, hypostoma, dorsal view, CEGH-UNC 25752; C, right free cheek, dorsal view, CEGH-UNC 25750; D, left free cheek, latex cast, dorsal view, CEGH-UNC 25756; E, holotype cranidium, dorsal view, CEGH-UNC 25751; F, cranidium, latex cast, dorsal view, CEGH-UNC 25753; G, left free check, dorsal view, CEGH-UNC 25754; H-J, L, pygidia, dorsal view; H, CEGH-UNC 25755; I, CEGH-UNC 25758; J, CEGH-UNC 25757; L, CEGH-UNC 25760; K, pygidium, latex cast, dorsal view, CEGH-UNC 25759; M, almost complete moult, dorsal view, CEGH-UNC 25761. All specimens come from the Quebrada del Arenal, Santa Rosita Formation, Santa Victoria Group; A, C-E, G-J, L, M, come from DLA 28; B, F, K, come from DLA 30. Scale bars: A, B, 0.25 cm; C-M, 0.5 cm.
FIG. 3 in Diversification of Asaphellus Callaway, 1877 (Asaphidae: Trilobita) during the Tremadocian in South West Gondwana (Cordillera Oriental, Argentina)
FIG. 3. — Biostratigraphic scheme for Cordillera Oriental and ranges of the different Asaphellus Callaway, 1877 species recognized in the basin from Parabolina (N.) frecuens argentina Zone to Bienvillia tetragonalis Zone. Biostratigraphy modified from Albanesi et al. (2008) and Vaccari et al. (2010). Asaphellus cf. aspinus in Tortello & Esteban (2003); Asaphellus sp. in: *, Tortello & Esteban 2007; **, Tortello et al. 2013.
FIG. 1 in Diversification of Asaphellus Callaway, 1877 (Asaphidae: Trilobita) during the Tremadocian in South West Gondwana (Cordillera Oriental, Argentina)
FIG. 1. — Map showing location of the Central Andean Basin and studied localities in the Argentinean Cordillera Oriental. Data from 2-6 come from Harrington & Leanza (1957) and Balseiro et al. (2011a). Localities: 1, Quebrada del Arenal, Huacalera area (sampled for this study); 2, Angosto del Ferrocarril, Angosto de Chucalezna; 3, Quebrada Rupasaca, Alfarcito area; 4, Quebrada Colorada, Iruya; 5, Quebrada del Toro, Cardonal Formation, Pascha-Incamayo area. Modified from Astini (2003).
FIG. 7. — A, B in Diversification of Asaphellus Callaway, 1877 (Asaphidae: Trilobita) during the Tremadocian in South West Gondwana (Cordillera Oriental, Argentina)
FIG. 7. — A, B, Asaphellus sp. 2, pygidia in dorsal view: A, CEGH-UNC 25763; B, CEGH-UNC 25764; C-F, Asaphellus sp. 1, CEGH-UNC 25765-25768; C, pygidium, latex cast, dorsal view, CEGH-UNC 25765; D, pygidium, dorsal view, CEGH-UNC 25766; E, pygidium, dorsal view, CEGH-UNC 25765; F, pygidium and thorax, dorsal view, CEGH-UNC 25767; G, A. isabelae n. sp., articulated juvenile, latex cast, dorsal view, CEGH-UNC 25762. Scale bars: A-F, 0.5 cm; G, 0.25 cm. All specimens come from the Quebrada del Arenal, Santa Rosita Formation, Santa Victoria Group: A, B, G, from DLA 28; C, E, from DLA 25; D, F, from DLA 20.
FIG. 9. — A in Diversification of Asaphellus Callaway, 1877 (Asaphidae: Trilobita) during the Tremadocian in South West Gondwana (Cordillera Oriental, Argentina)
FIG. 9. — A, reconstruction of A. stenorhachis (Harrington, 1938); B, reconstruction of A. isabelae n. sp. Drawing by Santiago Druetta.
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