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84 results for “Upper Ordovician”
Fig. 43. Lituites toernquisti Holm, 1891 from the Upper Grey Orthoceratite Limestone. A in Taxonomy and ontogeny of the Lituitida (Cephalopoda) from Orthoceratite Limestone erratics (Middle Ordovician)
Fig. 43. Lituites toernquisti Holm, 1891 from the Upper Grey Orthoceratite Limestone. A. Reproduction of the illustration by Holm (1891: pl. 1 figs 1–3); from left to right – lateral, dorsal and ventral view of specimen (mature aperture). B. Specimen MB.C.30532 (Neben Coll.) from Niederfinow (Brandenburg); previously figured by Neben & Krueger (1971: pl. 21 fig. 7); lateral view of specimen. C. Specimen MB.C.30533 (Neben & Krueger Coll.) from Niederfinow (Brandenburg); lateral view of specimen. Scale bar units = 1 mm.
Fig. 28. Angelinoceras Hyatt, 1894 from the Upper Red Orthoceratite Limestone. A in Taxonomy and ontogeny of the Lituitida (Cephalopoda) from Orthoceratite Limestone erratics (Middle Ordovician)
Fig. 28. Angelinoceras Hyatt, 1894 from the Upper Red Orthoceratite Limestone. A. Angelinoceras latum (Angelin, 1880), specimen MB.C.11682 (Remelé 1878 Coll.) from Eberswalde (Brandenburg); lateral view.B. Angelinoceras sp., specimen MB.C.29658 (Krueger Coll.) from Oderberg (Brandenburg). Scale bar units = 1 mm.
Fig. 38. Lituites perfectus Wahlenberg, 1818 from the Upper Grey Orthoceratite Limestone. A in Taxonomy and ontogeny of the Lituitida (Cephalopoda) from Orthoceratite Limestone erratics (Middle Ordovician)
Fig. 38. Lituites perfectus Wahlenberg, 1818 from the Upper Grey Orthoceratite Limestone. A. Neotype MB.C.30544 (Krueger Coll.) from Lansen near Malchin (Mecklenburg-Vorpommern, Germany). B. Specimen MB.C.30542 (Neben Coll.) from Niederfinow (Brandenburg). C. Specimen MB.C.11646 (Kgl. Forstakademie Eberswalde Coll.) from Eberswalde (Brandenburg). Scale bar units = 1 mm.
Text-fig. 13. Zoophycos isp. a: BK 17, Layer No. 6; b: BK 27, Layer No. 8; c: lateral tunnel continuing from spreite side to the surrounding rock, BK 28, Layer No. 23; d: BK 22, Layer No. 1; e: "juvenile" stage of the structure on a horizontal winding tunnel, BK 21, Layer No. 26; f: BK 24, Layer No. 17; g: broad winding tunnel adjacent to spreite, BK 26, Layer No. 6; h: BK 15, Layer No. 18; i: BK 23, Layer No. 2. Scale bar = 1 cm. in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 13. Zoophycos isp. a: BK 17, Layer No. 6; b: BK 27, Layer No. 8; c: lateral tunnel continuing from spreite side to the surrounding rock, BK 28, Layer No. 23; d: BK 22, Layer No. 1; e: "juvenile" stage of the structure on a horizontal winding tunnel, BK 21, Layer No. 26; f: BK 24, Layer No. 17; g: broad winding tunnel adjacent to spreite, BK 26, Layer No. 6; h: BK 15, Layer No. 18; i: BK 23, Layer No. 2. Scale bar = 1 cm.
Text-fig. 12. a: Spirophycus cf. bicornis (HEER, 1877), BK 19, Layer No. 6; b: Spirophycus isp., field photo, Layer No. 23; c–e: Teichichnus isp., full relief, partly weathered, from the upper side, field photos, Layers No. 23, 10 and 23; f, g: Thalassinoides isp., f – BK 12, Layer No. 4, g – field photo, Layer No. 1. Scale bar = 1 cm; field scale in centimetres. in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 12. a: Spirophycus cf. bicornis (HEER, 1877), BK 19, Layer No. 6; b: Spirophycus isp., field photo, Layer No. 23; c–e: Teichichnus isp., full relief, partly weathered, from the upper side, field photos, Layers No. 23, 10 and 23; f, g: Thalassinoides isp., f – BK 12, Layer No. 4, g – field photo, Layer No. 1. Scale bar = 1 cm; field scale in centimetres.
Text-fig. 11. a–d: Palaeophycus tubularis HALL, 1847, full relief, mostly flattened, a – field photo, Layer No. 23, b – field photo, Layer No. 10, c – field photo, Layer No. 23, d – field photo, Layer No. 23; e: Phycosiphon isp., concave epirelief of spreite, field photo, Layer No. 12; f: Polykladichnus isp., full relief on a vertical rock section, BK 11, Layer No. 13; g: Protovirgularia isp., epirelief, field photo, Layer No. 12; h: Scolicia isp., BK 30, Layer No. 6; i: Spirocircus isp., field photo, Layer No. 1. Scale bar = 1 cm. in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 11. a–d: Palaeophycus tubularis HALL, 1847, full relief, mostly flattened, a – field photo, Layer No. 23, b – field photo, Layer No. 10, c – field photo, Layer No. 23, d – field photo, Layer No. 23; e: Phycosiphon isp., concave epirelief of spreite, field photo, Layer No. 12; f: Polykladichnus isp., full relief on a vertical rock section, BK 11, Layer No. 13; g: Protovirgularia isp., epirelief, field photo, Layer No. 12; h: Scolicia isp., BK 30, Layer No. 6; i: Spirocircus isp., field photo, Layer No. 1. Scale bar = 1 cm.
Text-fig. 10. a: Gordia isp., concave epirelief, field photo, Layer No. 12; b, c: Helminthopsis isp., b – field photo, Layer No. 1, c – BK 34, Layer No. 6; d: Jamesonichnites isp., horizontal cross-section of broad lined shafts, field photo, Layer No. 23; e–i: Nereites isp., e – concavo-convex epirelief, field photo, Layer No. 12, f – full relief of the Nereites ichnofabric, BK 14, Layer No. 2, g – concave epirelief, field photo, Layer No. 12, h, i – full relief solitary specimens, field photo, Layer No. 8. Scale bar = 1 cm. in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 10. a: Gordia isp., concave epirelief, field photo, Layer No. 12; b, c: Helminthopsis isp., b – field photo, Layer No. 1, c – BK 34, Layer No. 6; d: Jamesonichnites isp., horizontal cross-section of broad lined shafts, field photo, Layer No. 23; e–i: Nereites isp., e – concavo-convex epirelief, field photo, Layer No. 12, f – full relief of the Nereites ichnofabric, BK 14, Layer No. 2, g – concave epirelief, field photo, Layer No. 12, h, i – full relief solitary specimens, field photo, Layer No. 8. Scale bar = 1 cm.
Text-fig. 7. Vertical polished sections of samples from selected layers. a: Layer No. 2, completely bioturbated, collection of the Czech Geological Survey (abbr. BK), BK 7; b: Layer No. 3, low: nearly completely bioturbated, upper: cross- to ripple bedding, weakly bioturbated, BK 6; c: Layer No. 7, incompletely bioturbated siltstone/mudstone, BK 5; d: Layer No. 8, low: totally bioturbated background with Zoophycos ichnofabric, upper: spotted, completely bioturbated siltstone, BK 4; e: Layer No. 8, low: in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 7. Vertical polished sections of samples from selected layers. a: Layer No. 2, completely bioturbated, collection of the Czech Geological Survey (abbr. BK), BK 7; b: Layer No. 3, low: nearly completely bioturbated, upper: cross- to ripple bedding, weakly bioturbated, BK 6; c: Layer No. 7, incompletely bioturbated siltstone/mudstone, BK 5; d: Layer No. 8, low: totally bioturbated background with Zoophycos ichnofabric, upper: spotted, completely bioturbated siltstone, BK 4; e: Layer No. 8, low:
Text-fig. 6. Zoophycos showing spreiten structure with a continuously meandering tunnel. Schematic drawing of the specimen from unidentified layer from a block out of the measured profile. Scale in centimetres. in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 6. Zoophycos showing spreiten structure with a continuously meandering tunnel. Schematic drawing of the specimen from unidentified layer from a block out of the measured profile. Scale in centimetres.
Text-fig. 4. The studied section showing ichnofabric index and ichnological snapshots on the upper bedding planes of layers No. 1, 12 and 23. in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 4. The studied section showing ichnofabric index and ichnological snapshots on the upper bedding planes of layers No. 1, 12 and 23.
Text-fig. 1. Photograph of the studied outcrop with wide bedding planes on the Loděnice – vinice above the topmost step of the vineyard. in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 1. Photograph of the studied outcrop with wide bedding planes on the Loděnice – vinice above the topmost step of the vineyard.
Text-fig. 9. a: Arenicolites isp., BK 13, Layer No. 6; b–f: Bifungites isp., a set of specimens showing variability in chamber shape, b – field photograph, Layer No. 23, c – field photograph, Layer No. 23, d – field photograph, Layer No. 23, e – parallel-orientated specimens, field photograph, Layer No. 23, f – field photograph, Layer No. 23; g: Didymaulichnus isp., convex epirelief, field photograph, Layer No. 1. Scale bar = 1 cm. in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 9. a: Arenicolites isp., BK 13, Layer No. 6; b–f: Bifungites isp., a set of specimens showing variability in chamber shape, b – field photograph, Layer No. 23, c – field photograph, Layer No. 23, d – field photograph, Layer No. 23, e – parallel-orientated specimens, field photograph, Layer No. 23, f – field photograph, Layer No. 23; g: Didymaulichnus isp., convex epirelief, field photograph, Layer No. 1. Scale bar = 1 cm.
Text-fig. 8. a, b: Bifungites isp. with fragments of vertical shafts, a – concave hyporelief BK 20, Layer No. 26, b – full relief BK 33, Layer No. 23; c–e: Palaeophycus sulcatus (MILLER et DYER, 1878), c – BK 29, Layer No. 22, d – BK 18, Layer No. 16, e – BK 31, Layer No. 6; f: Palaeophycus cf. tubularis HALL, 1847, BK 25, Layer No. 22; g: Megagrapton isp., concave hyporelief, BK 32, Layer No. 16; h: Teichichnus isp. (bottom) crossing Zoophycos isp. (centre to right bottom), BK 16, Layer No. 22. Scale bar = 1 cm. in Early Complex Tiering Pattern: Upper Ordovician, Barrandian Area, The Czech Republic
Text-fig. 8. a, b: Bifungites isp. with fragments of vertical shafts, a – concave hyporelief BK 20, Layer No. 26, b – full relief BK 33, Layer No. 23; c–e: Palaeophycus sulcatus (MILLER et DYER, 1878), c – BK 29, Layer No. 22, d – BK 18, Layer No. 16, e – BK 31, Layer No. 6; f: Palaeophycus cf. tubularis HALL, 1847, BK 25, Layer No. 22; g: Megagrapton isp., concave hyporelief, BK 32, Layer No. 16; h: Teichichnus isp. (bottom) crossing Zoophycos isp. (centre to right bottom), BK 16, Layer No. 22. Scale bar = 1 cm.
Fig. 6 in The tarphyceratid cephalopod Trocholites in the Middle-Upper Ordovician of the Prague Basin -the Baltican element in peri-Gondwana
Fig. 6. Tarphyceratid cephalopod Trocholites chaloupkai sp. nov. from Praha-Štěrboholy, central Bohemia, Czech Republic, upper part of the Zahořany Formation (lower Katian, Upper Ordovician). A. Holotype NM L 63626, detail of apicalmost part of the phragmocone (A1) and drawing (A2) indicating line of contact of whorls, position of siphuncle, position of (partly fragmented) septa and shape of initial chamber and umbilical window.
Fig. 4 in The tarphyceratid cephalopod Trocholites in the Middle-Upper Ordovician of the Prague Basin -the Baltican element in peri-Gondwana
Fig. 4. Tarphyceratid cephalopod Trocholites fugax Babin and GutiérrezMarco, 1992, from Březová Hůrka near Starý Plzenec, central Bohemia, Czech Republic, Dobrotivá Formation (upper Middle–lower Upper Ordovician). A. NM L 63625a, b, counterpart (A1) and part (A2).
Fig. 3 in The tarphyceratid cephalopod Trocholites in the Middle-Upper Ordovician of the Prague Basin -the Baltican element in peri-Gondwana
Fig. 3. Parameters used to measure and describe the specimens studied herein (after Korn 2010). Abbreviations: ah, apertural height; cl, cameral length; dm, shell diameter across centre of umbilicus; fh, foramen height; iz, imprint zone; uw, umbilical width; wh, whorl height; ww, whorl width. Line drawings are based on NM L 63626 (holotype of Trocholites chaloupkai sp. nov.).
Fig. 2 in The tarphyceratid cephalopod Trocholites in the Middle-Upper Ordovician of the Prague Basin -the Baltican element in peri-Gondwana
Fig. 2. Correlation of the Dobrotivá and Zahořany formations (greyed-out levels) with global and Ibero-Bohemian chronostratigraphic units, and the herein discussed occurrence of Trocholites. Modified from Kraft et al. (2015), Fatka and Budil (2022), and Kraft et al. (2023).
Fig. 1 in The tarphyceratid cephalopod Trocholites in the Middle-Upper Ordovician of the Prague Basin -the Baltican element in peri-Gondwana
Fig. 1. Map of Ordovician rocks of the Prague Basin and position of the localities, from which the two studied specimens originate: Locality 1, Březová Hůrka near Starý Plzenec; Locality 2, Praha-Štěrboholy. Modified from Manda (2008).
Fig. 7 in The tarphyceratid cephalopod Trocholites in the Middle-Upper Ordovician of the Prague Basin -the Baltican element in peri-Gondwana
Fig. 7. Tarphyceratid cephalopod Trocholites chaloupkai sp. nov. from Praha-Štěrboholy, central Bohemia, Czech Republic, upper part of the Zahořany Formation (lower Katian, Upper Ordovician). A. Holotype NM L 63626, general view on shell ornament (A1); SEM image of shell ornament (A2) on umbilical wall of the outer whorl, coalescent ornament elements form a net-like (fenestrate) pattern; SEM image with detail of shell ornament (A3), transverse elements have a lamellar character and are imbricated adaperturally, the elements form undulating ridges that are locally coalescent with each other.
Fig. 5 in The tarphyceratid cephalopod Trocholites in the Middle-Upper Ordovician of the Prague Basin -the Baltican element in peri-Gondwana
Fig. 5. Tarphyceratid cephalopod Trocholites chaloupkai sp. nov. from Praha-Štěrboholy, central Bohemia, Czech Republic, upper part of the Zahořany Formation (lower Katian, Upper Ordovician). Holotype NM L 63626, optical microscope photograph of whitened specimen in lateral view (A1); micro-CT images showing frontal (A2) and ventral (A3) views, note ventral lobe of suture line; virtual longitudinal sections in sagittal plane showing partly preserved septa in last (A4) and penultimate (A7) whorls; virtual longitudinal section in median plane (A8) showing the siphuncle and the earliest whorl of the phragmocone; virtual transverse sections in slightly eccentric (A5) and central (A6) planes documenting whorl profile shape and siphuncle.
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