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26 results for “Agnostida”
Text-fig. 1. The Czech Republic with the position of the Příbram-Jince Basin (A), distribution of Cambrian rocks of the Jince Formation in the Příbram-Jince Basin (B), geographic position of discussed localities (C), stratigraphic ranges of Condylopyge in the Jince Formation of the Příbram-Jince Basin (D). 1. foot of the slope known as Vinice near Jince (locality 15 in Fatka and Kordule 1992); lowermost levels of the Acadolenus snajdri Zone sensu Fatka and Szabad (2014). 2. locality Potůček near Rejkovice (= locality 12 in Fatka and Kordule 1992); lower levels of the Paradoxides (Eccaparadoxides) pusillus Zone sensu Fatka and Szabad (2014). Specimens CGS CW 17 and CGS FK 63. 3. foot of the slope known as Vinice near Jince (locality 20 in Fatka and Kordule 1992); lower levels of the Onymagnostus hybridus Biozone sensu Fatka and Szabad (2014). Specimen CGS CW 18. in Condylopyge Hawle Et Corda, 1847 In The Příbram-Jince Basin (Barrandian Area, The Czech Republic, Agnostida)
Text-fig. 1. The Czech Republic with the position of the Příbram-Jince Basin (A), distribution of Cambrian rocks of the Jince Formation in the Příbram-Jince Basin (B), geographic position of discussed localities (C), stratigraphic ranges of Condylopyge in the Jince Formation of the Příbram-Jince Basin (D). 1. foot of the slope known as Vinice near Jince (locality 15 in Fatka and Kordule 1992); lowermost levels of the Acadolenus snajdri Zone sensu Fatka and Szabad (2014). 2. locality Potůček near Rejkovice (= locality 12 in Fatka and Kordule 1992); lower levels of the Paradoxides (Eccaparadoxides) pusillus Zone sensu Fatka and Szabad (2014). Specimens CGS CW 17 and CGS FK 63. 3. foot of the slope known as Vinice near Jince (locality 20 in Fatka and Kordule 1992); lower levels of the Onymagnostus hybridus Biozone sensu Fatka and Szabad (2014). Specimen CGS CW 18.
Text-fig. 2. Condylopyge cf. rex (BARRANDE, 1846), middle Cambrian, latest Cambrian Stage 5 and lower Drumian, Jince Formation, Příbram-Jince Basin. a. internal mould of isolated cephalon (Specimen CGS CW 17), Potůček near Rejkovice locality (= locality 12 in Fatka and Kordule 1992) in lower levels of the Paradoxides (Eccaparadoxides) pusillus Zone. b. latex cast of external mould of isolated pygidium (Specimen CGS FK 63), Potůček near Rejkovice locality (= locality 12 in Fatka and Kordule 1992) in lower levels of the Paradoxides (Eccaparadoxides) pusillus Zone. c. internal mould of isolated cephalon (Specimen CGS CW 18), foot of the slope known as Vinice near Jince (locality 20 in Fatka and Kordule 1992) in lower levels of the Onymagnostus hybridus Zone. Condylopyge rex (BARRANDE, 1846), middle Cambrian, lower Drumian, Buchava Formation, Paradoxides (Eccaparadoxides) pusillus Zone, Skryje-Týřovice Basin. d. internal mould of isolated cephalon (NM-L43011a), Karáskovská rokle - nad chatami. e. internal mould of isolated pygidium (NM-L43014), Lůmek u Týřovic. f. internal mould of isolated cephalon (NM-L43013), Lůmek u Týřovic. Whitened with ammonium chloride sublimate. All scale bars are 1 mm. Photographs by Martin Valent (National Museum Prague). in Condylopyge Hawle Et Corda, 1847 In The Příbram-Jince Basin (Barrandian Area, The Czech Republic, Agnostida)
Text-fig. 2. Condylopyge cf. rex (BARRANDE, 1846), middle Cambrian, latest Cambrian Stage 5 and lower Drumian, Jince Formation, Příbram-Jince Basin. a. internal mould of isolated cephalon (Specimen CGS CW 17), Potůček near Rejkovice locality (= locality 12 in Fatka and Kordule 1992) in lower levels of the Paradoxides (Eccaparadoxides) pusillus Zone. b. latex cast of external mould of isolated pygidium (Specimen CGS FK 63), Potůček near Rejkovice locality (= locality 12 in Fatka and Kordule 1992) in lower levels of the Paradoxides (Eccaparadoxides) pusillus Zone. c. internal mould of isolated cephalon (Specimen CGS CW 18), foot of the slope known as Vinice near Jince (locality 20 in Fatka and Kordule 1992) in lower levels of the Onymagnostus hybridus Zone. Condylopyge rex (BARRANDE, 1846), middle Cambrian, lower Drumian, Buchava Formation, Paradoxides (Eccaparadoxides) pusillus Zone, Skryje-Týřovice Basin. d. internal mould of isolated cephalon (NM-L43011a), Karáskovská rokle - nad chatami. e. internal mould of isolated pygidium (NM-L43014), Lůmek u Týřovic. f. internal mould of isolated cephalon (NM-L43013), Lůmek u Týřovic. Whitened with ammonium chloride sublimate. All scale bars are 1 mm. Photographs by Martin Valent (National Museum Prague).
PLATE 16 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 16. Taxa from Hedinaspis-Charchaqia Fauna in the Hales Formation, Hot Creek section. Each white scale bar represents 2mm. 1. Lotagnostus nolani n. sp. Carapace (latex peel of external mold), USMN 775754, with Mendoparabolina nyensis, cephalon (counterpart of holotype), USMN 218571 (= Taylor, 1976, pl. 3, fig. 16), from D7130-CO, dorsal view, x7.8. 2, 3. Lotagnostus nolani n. sp. Cephalon, USMN 775755, from D7133-CO, dorsal and anterior views, x11.0. 4-5. Lotagnostus nolani n. sp. Cephalon, USMN 775756, from D7130-CO, dorsal and lateral views, x9.7. 6. Lotagnostus nolani n. sp. Pygidium, USMN 775757, from D7130-CO, dorsal view, x12.2. 7. Lotagnostus nolani n. sp., pygidium, USMN 775758, from D7130-CO, dorsal view, x10.3. 8. Pseudagnostus? sp., carapace, USMN 775759, from D7130-CO, dorsal view, x8.0. 9. Pseudagnostus? sp., carapace, USMN 775760, from D7133-CO, dorsal view, x8.3. 10. Mendoparabolina nyensis (Taylor, 1976), small cranidium, USMN 775761, from D7133- CO, dorsal, x14.3. 11. Mendoparabolina nyensis (Taylor, 1976), pygidium, USMN 775762, from D7130-CO, dorsal view, x7.5. 12. Lotagnostus sp., cephalon, USMN 775763, from D7130-CO, dorsal view, x16.8. 13. Ceratopygid undet., cranidium, USMN 775764, from D7129-CO, dorsal view, x3.9. 14. Lotagnostus sp., cephalon, USMN 775765, from D7130-CO, dorsal view, x8.6. 15. Lotagnostus sp., pygidium, USMN 775766, from D7131-CO, dorsal view, x4.4. 16. Lotagnostus sp., pygidium, USMN 775767, from D7130-CO, dorsal view, x6.5. 17. Ceratopygid undet., pygidium, USMN 775768, from D7129-CO, dorsal view, x2.6.
PLATE 14 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 14. Cephala of Neoagnostus parki n. sp. Each white scale bar represents 2mm. 1-3. Holotype, CM 41394, from 5/22/08B, dorsal, anterior, and left lateral views. 4. CM 41391, from 5/22/08B, dorsal view. 5-6. USMN 775752, from D3362- CO, dorsal and anterior views. 7. CM 41392, from 5/22/08B, dorsal view. 8-10. CM 41393, from 5/22/08B, dorsal, anterior, and right lateral views. 11-12. CM 41390, from 5/22/08B, dorsal and left lateral views.
PLATE 15 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 15. Pygidia of Neoagnostus parki n. sp. Each white scale bar represents 2mm. 1-3. CM 41354 from 5/22/08B, dorsal, posterior, and right lateral views. 4. CM 41395, from 5/22/08B, dorsal view. 5. CM 41352, from 5/22/08B, dorsal view. 6. USMN 775753, from D3362-CO, dorsal view. 7. CM 41397, from 5/22/08B, dorsal view. 8. CM 41399, from 5/22/08B, dorsal view. 9. CM 41398, from 5/22/08B, dorsal view. 10-12. CM 41396, from 5/22/08B, dorsal, right lateral, and posterior views. 13. CM 41355, from 5/22/08B, dorsal view. 14. CM 41400, from 5/22/08B, dorsal view.
PLATE 13. Lotagnostus morrisoni n in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 13. Lotagnostus morrisoni n. sp. Each white scale bar represents 2mm. 1-4. Cephalon, USMN 775747, from D3381- CO, dorsal, anterior, right lateral, and anterior oblique views. 5, 10. Cephalon, CM 41387, from 5/22/08C, dorsal and anterior oblique views. 6-9. Cephalon, CM 41388, from 5/22/08D, dorsal, anterior, lateral, and anterior obliqueviews. 11-14. Pygidium, holotype, CM 41389, from 5/22/08D, dorsal view; posterior oblique, posterior, and right lateral views. 15-16. Pygidium, USNM 775748, from 3D3381-CO, dorsal and posterior oblique views. 17. Pygidium, USMN 775749, from 3D3381-CO, dorsal view. 18. Pygidium, USNM 775750, from 3D3381-CO, dorsal view. 19-20. Pygidium, USMN 775751, from 3D3381-CO, dorsal and posterior oblique views.
PLATE 12. Lotagnostus rushtoni n in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 12. Lotagnostus rushtoni n. sp. Each white scale bar represents 2mm. 1-3. Cephalon, CM 41383, from 5/22/08D, dorsal, anterior, and left lateral views. 4-6. Cephalon, USMN 775739, from D3383-CO, dorsal, anterior, and right lateral views. 7. Cephalon, USMN 775740, from D3383-CO, dorsal view. 8. Cephalon, USMN 775741, from D3383-CO, dorsal view. 9. Cephalon, USMN 775742, from D3383-CO, dorsal view. 10. Cephalon, CM 41384, from 5/22/08D, dorsal view. 11- 14. Pygidium, holotype, CM 41385, from 5/22/08D, dorsal, posterior, right lateral, and posterior oblique views. 15. Pygidium, USMN 775743, from D3383-CO, dorsal view. 16. Pygidium, USMN 775744, from D3383-CO, dorsal view. 17-19. Pygidium, USMN 775745, from D3383-CO, dorsal, left lateral, and posterior views. 20. Pygidium, CM 41386, from 5/22/08D, dorsal view. 21. Pygidium, USMN 775746, from 3D3381-CO, dorsal view.
FIGURE 3 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
FIGURE 3. Stratigraphic distribution of conodont species from the Windfall Formation at Ninemile Canyon, Nevada. "JR" indicates collections of John Repetski.
PLATE 11 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 11. Pygidia of Lotagnostus clarki n. sp. Each white scale bar represents 2mm. 1-4. USMN 775734, from D3362-CO, dorsal, posterior, right lateral, and posterior oblique views. 5, 7 USMN 775735, from D3362-CO, left lateral and dorsal views. 6. CM 41317, from 5/22/08B, dorsal view. 8-10. USMN 775736, from D3362-CO, dorsal, posterior, and left lateral views. 11. CM 41316, from 5/22/08B, dorsal view. 12. CM 41378, from 5/22/08B, dorsal view. 13-15. USMN 775737, from D3362-CO, dorsal, posterior, and right lateral views. 16. USMN 775738, from D3362-CO dorsal view. 17. CM 41379, from 5/22/08B, dorsal view. 18. CM 41380, from 5/22/08B, dorsal view. 19. CM 41381, from 5/22/08B, dorsal view. 20. CM 41382, from 5/22/08B, dorsal view.
FIGURE 7 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
FIGURE 7. Relative abundance of Lotagnostus species, other agnostoids, olenid trilobites, and other trilobites in the El Relincho Formation, Cerro Pelado, of the Argentine Precordillera (Tortello, 2014). Relative abundance based upon total number of sclerites reported.
PLATE 7. Miscellaneous Windfall taxa. Each white scale bar represents 2 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 7. Miscellaneous Windfall taxa. Each white scale bar represents 2mm. 1-3. Lotagnostus cf. L. obscurus. USMN 775722, cephalon, from D3362-CO, dorsal, anterior, and left lateral views. 4-6. Rhaptagnostus cf. R. convergens. Cephalon, CM 41350, from 5/22/08B, dorsal, anterior, and right lateral views. 7-9. Lotagnostus cf. L. obscurus. Cephalon, CM 41351, from 5/22/08B, dorsal, anterior, and right lateral views. 10-12. Homagnostus?. Pygidium, CM 41356, from 5/22/08B, dorsal, posterior, and left lateral views. 13-15. Lotagnostus cf. L. obscurus. Pygidium, CM 41353, from 5/22/08B, dorsal, posterior, and left lateral views. 16. Homagnostus? sp. Pygidium, CM 41401, from 5/22/08B, dorsal view. 17-18. Micragnostus cf. M. intermedius. Cephalon, CM 41358, from 5/22/08B, left lateral and dorsal views. 19. Hedinaspis sp. Fragmentary thoracic and/or pygidial fragment, CM 41359, from 5/22/08C, dorsal view. 20. Machairagnostus cf. M. corrugatus. Pygidium, CM 41349, from 5/22/08B, dorsal view. 21-22. Homagnostus? sp. Cephalon, CM 41357, from 5/22/08B, dorsal and anterior views.
PLATE 1 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 1. Ontogenetic comparison of Lotagnostus nolani and L. clarki n. sp. All images at same scale and all from collection 5/22/08B. 1-5, 15. L. nolani cephala. 1. CM 41301. 2. CM 41302. 3. CM 41303. 4, 15. CM 41304. 5. CM 41305. 6-10, 21. L. clarki cephala. 6. CM 41310. 7. CM 41311. 8. CM 41312. 9, 21. CM 41313. 10. CM 41314. 11-14, 16. L. nolani pygidia. 11. CM 41306. 12. CM 41307. 13. CM 41308. 14,16. CM 41309. 17-20, 22. L. clarki pygidia. 17. CM 41315, 18. CM 41316. 19. CM 41317. 20. CM 41318. 22. CM 41319.
FIGURE 10 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
FIGURE 10. Morphometric comparisons of some Lotagnostus species. (1) Dimensions measured on cephala. Abbreviations: AAL, Axial Anteroglabella Length; APL, Axial Posteroglabella Length; EBL, Exsaggital, Basal lobe Length; PFL, Preglabellar Field Length. (2) Scatter plot of EBL/APL ratio versus length of the cephalon for 3 species of Lotagnostus. L. "trisectus" refers to species identified by that name from Sweden in previous studies. (3) Scatter plot of PFL/AAL ratio versus length of the cephalon for 4 species of Lotagnostus. (4) Graphic comparison of posteroaxis length/length of axis as a function of pygidial length (excluding articulating half ring) for 3 species of Lotagnostus.
FIGURE 6 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
FIGURE 6. Reconstruction of northern Laurentian platform margin showing environmental settings interpreted for formations that have yielded Lotagnostus, and pie charts showing relative abundances of Lotagnostus, other agnostoids, olenids, and other trilobites. Position of Windfall Formation on the profile is based on the lithofacies documented in the Antelope Range. Rimmed platform profile and lithofacies patterned after reconstruction of Appalachian margin by James et al. (1989, fig. 12).
FIGURE 9 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
FIGURE 9. Revised trilobite and agnostoid species range chart, Tybo and Hot Creek sections, Hot Creek Range, Nevada (after Taylor, 1976, text-fig. 3). Abbreviation: HC Fauna = Hedinaspis-Charchaqia Fauna.
FIGURE 5 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
FIGURE 5. Size frequency distribution for lengths of pygidial axis for Lotagnostus nolani and L. clarki from Collection 5/22/5/22/08B, Windfall Formation, Ninemile Canyon, Nevada
PLATE 10 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 10. Cephala of Lotagnostus clarki n. sp. Each white scale bar represents 2mm. 1-4. Holotype, CM 41373, from 5/22/08B, dorsal, anterior, right lateral, and anterior oblique views. 5. USMN 775729, from D3362-CO, dorsal view. 6. USMN 775730, from D3362-CO, dorsal view. 7. CM 41374, from 5/22/08B, dorsal view. 8. CM 41375, from 5/22/08B, dorsal view. 9, 10. USMN 775731, from D3362-CO, dorsal and anterior oblique views. 11-13. USMN 775732, from D3362-CO, dorsal, anterior, and right lateral views. 14, 15. Cephalon, CM 41376, from 5/22/08B, dorsal and anterior oblique views, x9.5. 16. Cephalon, USMN 775733, from D3362-CO, dorsal view, x7.3. 17-19. Cephalon, CM 41377, from 5/22/08B, dorsal, anterior, and left lateral views, x7.0.
PLATE 5 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 5. Mendoparabolina nyensis (Taylor, 1976). Each white scale bar represents 2mm. 1. Cranidium, CM 41338, from 5/22/08B, dorsal view. 2. Cranidium, CM 41339, from 5/22/08B, dorsal view. 3-5. Cranidium, CM 41340, from 5/22/08B, dorsal, left lateral, and anterior views. 6. Cranidium, CM 41341, from 5/22/08B, dorsal view. 7. Cranidium, CM 41342, from 5/22/08B, dorsal view. 8. Cranidium, CM 41343, from 5/22/08B, dorsal view. 9, 10, 14. Pygidium, CM 41344, from 5/22/08B, dorsal, lateral, and posterior views. 11. Cranidium, USMN 775719, from D3362-CO, dorsal view. 12. Pygidium, CM 41345, from 5/22/08B, dorsal view. 13. Right librigena, USMN 775720, from D3362-CO, dorsal view. 15. Pygidium, CM 41346, from 5/22/08B, dorsal view. 16. Pygidium, CM 41347, from 5/22/08B, dorsal view. 17. Pygidium, USMN 775721, from D3362-CO, dorsal view. 18. Pygidium, CM 41348, from 5/22/08B, dorsal view.
PLATE 9 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 9. Pygidia of Lotagnostus nolani n. sp. Each white scale bar represents 2mm. 1-4. USMN 775727, from D3362-CO, dorsal, posterior, right lateral, and posterior oblique views. 5. CM 41366, from 5/22/08B, dorsal view. 6. CM 41367, from 5/22/08B, dorsal view. 7. USMN 775728, from D3362-CO, dorsal view. 8-10. CM 41368, from 5/22/08B, dorsal, posterior, and left lateral views. 11. CM 41369, from 5/22/08B, dorsal view. 12. CM 41370, from 5/22/08B, dorsal view. 13. CM 41371, from 5/22/08B, dorsal view. 14-16. CM41372, from 5/22/08B, dorsal, posterior, and left lateral views.
PLATE 4 in Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia
PLATE 4. Bienvillia sp. All cranidia except 7 (librigena). Each white scale bar represents 2mm. 1-2. USMN 775718, from D3383-CO, dorsal and anterior views. 3-4. CM 41327, from 5/22/08C, dorsal and right lateral views. 5-6. CM 41328, from 5/22/08D, dorsal and left lateral views. 7. Right librigena, CM 41329, from 5/22/08C, dorsal view. 8. CM 41330, from 5/22/08C, dorsal view. 9. CM 41331, from 5/22/08C, dorsal view. 10. CM 41332, from 5/22/08D, dorsal view. 11. CM 41333, from 5/22/08D, dorsal view. 12. CM 41334, from 5/22/08D, dorsal view. 13. CM 41335, from 5/22/08D, dorsal view. 14. CM 41336, from 5/22/08D, dorsal view. 15. CM 41337, from 5/22/08C, dorsal view.
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