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Text-fig. 1. Bohemian Massif with position of the Prague Basin (in black) and distribution of Ordovician rocks in the Prague Basin, with geographic position of main localities of the siliceous nodules. in Porambonites Havliceki Sp. Nov., A New Brachiopod From The Šárka Formation (Darriwilian) From Bohemia And Its Contribution To Early History Of The Porambonitidae
Text-fig. 1. Bohemian Massif with position of the Prague Basin (in black) and distribution of Ordovician rocks in the Prague Basin, with geographic position of main localities of the siliceous nodules.
Text-fig. 2. Stratigraphic ranges of selected porambonitid taxa in West Gondwana (Iberica), Baltica, Perunica and Avalonia. Arrows indicate derivation of early Baltic porambonitids from Gondwanan Poramborthis (1), derivation of Porambonites in Perunica and Avalonia from Baltica (2), and expansion of Porambonites from Baltica and/or Avalonia to West Gondwana (3). in Porambonites Havliceki Sp. Nov., A New Brachiopod From The Šárka Formation (Darriwilian) From Bohemia And Its Contribution To Early History Of The Porambonitidae
Text-fig. 2. Stratigraphic ranges of selected porambonitid taxa in West Gondwana (Iberica), Baltica, Perunica and Avalonia. Arrows indicate derivation of early Baltic porambonitids from Gondwanan Poramborthis (1), derivation of Porambonites in Perunica and Avalonia from Baltica (2), and expansion of Porambonites from Baltica and/or Avalonia to West Gondwana (3).
Fig. 11 in A Darriwilian (Middle Ordovician) bivalve-dominated molluscan fauna from the Stairway Sandstone, Amadeus Basin, central Australia
Fig. 11. Nucularcid and pteriomorphian bivalves from the Stairway Sandstone, Middle Ordovician, Australia. Internal moulds (B–K) and latex casts of external moulds (A, L, M). A. Sthenodonta sp. B (CPC 41468) from Petermann Creek, left-lateral view showing well marked growth lines. B. Johnmartinia cordata Pojeta and Gilbert-Tomlinson, 1977 (CPC 41469) from Areyonga Gorge; left-lateral view with dorsal border (B1), anterior view showing the pointy beak (B2). C–F. Nuculites wattii Tate, 1896 from Areyonga Gorge. C–E. Specimens in left (C, E) and right-lateral (D) dorsal views, showing well-defined anterior myophoric buttress, D additionally shows dorsal teeth (C, CPC 41470; D, CPC 41472; E, CPC 41472). F. Right-lateral view of fragmentary specimen with chevron shaped posterior teeth pointing anteriorly (CPC 41473). G. Cyrtodonta carberryi Pojeta and Gilbert-Tomlinson, 1977 (CPC 41474) from Areyonga Gorge; in right-lateral view with growth lines and at least one dorsal lateral tooth (G1), dorsal view illustrating the height of shell profile (G2). H–K. Cyrtodonta staffordae Pojeta and Gilbert-Tomlinson, 1977 from Petermann Creek (H–I, K) and Areyonga Gorge (J). H. Specimen in right-lateral view showing distinct growth lines (CPC 41475). I. Specimen in left-lateral view with three posterior lateral teeth (CPC 41476). J. Fragmentary posterior margin with duplivincular ligament and indications of three posterior lateral teeth (CPC 41478). K. Specimen in right-lateral view with a posterior lateral tooth (CPC 41477). L, M. Cyrtodonta sp. B. L. Anterior (L1) and left-lateral (L2) views of sub-ovate shell-profile (CPC 41479) from Petermann Creek. M. Sub-ovate shell-profile with growth lines (CPC 41480) from Areyonga Gorge. Scale bars 10 mm.
Fig. 10 in A Darriwilian (Middle Ordovician) bivalve-dominated molluscan fauna from the Stairway Sandstone, Amadeus Basin, central Australia
Fig. 10. Nucularcid bivalves from the Stairway Sandstone, Middle Ordovician, Australia. Internal (A–H, I1, J1, K–N) and external (I2, J2) moulds. A–J. Sthenodonta eastii Pojeta and Gilbert-Tomlinson, 1977 from the Petermann Creek. A–D. Specimens in left-lateral views with chevron-shaped palaeotaxodont teeth (A, CPC 41455; B, CPC 41456; C, CPC 41456; D, CPC 41457). E. Specimen in dorsal view with teeth (CPC 41458). F, G. Specimens in right-lateral view with teeth and ventral border (F, CPC 41459; G, CPC 41460). H. Specimen in left-lateral view with anterior myophoric buttress preserved (CPC 41461). I. Specimen in right-lateral view showing indistinct growth lines (CPC 41462). J. Specimen in left-lateral view (CPC 41463). K, L. Sthenodonta paenesymmetrica sp. nov. from the Areyonga Gorge (K) and Petermann Creek (L), right-valves in dorsomedial views. K. Holotype (CPC 41464). L. Juvenile specimen (CPC 41465). M, N. Sthenodonta sp. A. M. Specimen (CPC 41467) from the Petermann Creek in right-lateral view with anterior muscle scars indicated and part of original shell material preserved. N. Specimen (CPC 41466) from Areyonga Gorge in right-lateral view with curved anterodorsal margin. Scale bars 10 mm.
Fig. 8 in A Darriwilian (Middle Ordovician) bivalve-dominated molluscan fauna from the Stairway Sandstone, Amadeus Basin, central Australia
Fig. 8. Number of individual bivalves (A) and bivalve species (B) distributed within orders/infraclasses in the Areyonga Gorge and Petermann Creek sections.
Fig. 4 in A Darriwilian (Middle Ordovician) bivalve-dominated molluscan fauna from the Stairway Sandstone, Amadeus Basin, central Australia
Fig. 4. Composite log of the Stairway Sandstone and abundance-charts showing distribution of bivalves and rostroconchs in the Areyonga Gorge section.
Fig. 5 in A Darriwilian (Middle Ordovician) bivalve-dominated molluscan fauna from the Stairway Sandstone, Amadeus Basin, central Australia
Fig. 5. Composite log of the Stairway Sandstone and abundance-charts showing distribution of bivalves and rostroconchs in the Petermann Creek section.
Fig. 2 in A Darriwilian (Middle Ordovician) bivalve-dominated molluscan fauna from the Stairway Sandstone, Amadeus Basin, central Australia
Fig. 2. Distribution of the Larapintine Sea in the Middle Ordovician. The extent of the Canning, Amadeus, and Georgina basins, all containing Middle Ordovician deposits, have been inferred together with the extent of continental landmass (marked with horizontal lines). Base map modified from Webby 1978. A. Webby's interpretation (1978). B. New interpretation based on faunal correlation. Note the broken connection between the Amadeus–Georgina basins and the Canning Basin.
Fig. 12 in A Darriwilian (Middle Ordovician) bivalve-dominated molluscan fauna from the Stairway Sandstone, Amadeus Basin, central Australia
Fig. 12. Pteriomorphian and heteroconchian bivalves, rostroconchs and gastropods from the Stairway Sandstone, Middle Ordovician, Australia. Internal moulds (A, B, E–M, N1) and latex casts of internal (N2, O) and external (C, D) moulds. A, B. Modiolopsis pojetai sp. nov. from Petermann Creek. A. Holotype (CPC 41481) in left-lateral view showing discrete longitudinal dorsal slit-like mark. B. Paratype (CPC 41482) in right-lateral view with umbo steeply descending anteriorly. C, D. Colpantyx? sp. A from Areyonga Gorge; in right (C, CPC 41483) and left-lateral (D, CPC 41484) views with two umbonal radial ribs anteriorly and one posteriorly. E, F. Sphenosolen draperi Pojeta and Gilbert-Tomlinson, 1977 from Petermann Creek (E, CPC 41485; F, CPC 41486), specimens with flat shell and narrow elongated sub-rectangular shape. G–M. Rostroconchia. G–I. Ribeiria csiro Pojeta, GilbertTomlinson, and Shergold, 1977 from Areyonga Gorge (G) and Petermann Creek (H–I); note the prominent triangular beak and curved ventral margin (G, CPC 41487; H, CPC 41488; I, CPC 41489). J. Ribeiria jonesi? from Petermann Creek, sub-rectangular profile and strong dorsally projecting umbo (CPC 41490). K, L. Pinnocaris sp. A from Petermann Creek with inflated pear-shaped profile (K, CPC 41491; L, CPC 41492). M. Technophorus walteri Pojeta, Gilbert-Tomlinson, and Shergold, 1977 from Areyonga Gorge (CPC 41493) with a single lateral radial rib and prominent nearly erect pegma indicated. N, O. Gastropoda, Scalites? sp. from Petermann Creek. N. CPC 41494 (N1), latex cast with clear growth lines (N2). O. CPC 41495, specimen with 3.5 to 4 whorls. Scale bars 10 mm, except C, D, M, 5 mm.
Fig. 7 in A Darriwilian (Middle Ordovician) bivalve-dominated molluscan fauna from the Stairway Sandstone, Amadeus Basin, central Australia
Fig. 7. Distribution of the cosmopolitan genera Modiolopsis, Cyrtodonta, and Nuculites found in the Stairway Sandstone and coeval strata elsewhere during the Middle Ordovician. Map modified from Torsvik et al. (2014).
Figure 32 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 32. Yangtzeplacognathus protoramosus (Chen, Chen & Zhang, 1983). A, sinistral Pa element, NIGP 153145, Nj378, upper view (IY153-018). B, dextral Pb element, NIGP 153146, AFT-X-K13/40, upper view (IY163-040). C–G, dextral Pa element; C, NIGP 153147, Nj378, upper view (IY153-017); D, NIGP 153148, AFT-X-K13/44, upper view (IY165-014); E, NIGP 153149, AFT-X-K13/43, upper view (IY164-023); F, NIGP 153150, Nj378, upper view (IY153-021); G, NIGP 153151, AFT-X-K13/44, upper view (IY165-013). Scale bars 100 µm.
Figure 30 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 30. Yangtzeplacognathus jianyeensis (An & Ding, 1982). A–G, sinistral Pa element; A–B, NIGP 153127, AFT-X-K13/44, A, upper view (IY165-011), B, lateral view (IY165-010); C–D, NIGP 153128, AFT-X-K13/43, C, upper view (IY164-018), D, lateral view (IY164-016). E–F, NIGP 153129, AFT-X-K13/41, E, upper view (IY164-008), F, upper-lateral view (IY164-007); G, NIGP 153130, AFT-X-K13/44, basal view (IY165-012). H–L, dextral Pa element; H–I, NIGP 153131, AFT-X-K13/44, H, upper view (IY165-003), I, upper view, close up showing fine reticular surface structure (IY166-005); J, NIGP 153132, AFT-X-K13/44, basal view (IY165-006); K, NIGP 153133, AFT-X-K13/43, upper view (IY164-014); L, NIGP 153134, AFT-X-K13/40, upper view (IY164-001). Scale bars 100 µm, unless otherwise indicated.
Figure 31 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 31. Yangtzeplacognathus jianyeensis (An & Ding, 1982). A–G, sinistral Pb element; A, NIGP 153135, AFT-X-K13/44, basal view (IY165-008); B, NIGP 153136, AFT-X-K13/44, upper view (IY165-001); C, NIGP 153137, AFT-X-K13/44, juvenile, upper view (IY165- 015); D, NIGP 153138, AFT-X-K13/42, upper view (IY164-009); E, NIGP 153139, AFT-X-K13/41, upper view (IY164-004); F–G, NIGP 153140, AFT-X-K13/40, F, upper view (IY163-038), G, upper view, close up showing fine reticular surface structure (IY163-039). H–L, dextral Pb element; H, NIGP 153141, AFT-X-K13/44, upper view (IY165-002); I, NIGP 153142, AFT-X-K13/44, basal view (IY165- 007); J, NIGP 153143, AFT-X-K13/43, upper view (IY164-010); K–L, NIGP 153144, AFT-X-K13/40, K, basal view (IY163-041), L, basal view, close up showing lamellar surface structure (IY163-042). Scale bars 100 µm, unless otherwise indicated.
Figure 29 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 29. Yangtzeplacognathus crassus (Chen & Zhang, 1993). A–H, sinistral Pb element; A–B, NIGP 153118, Nj295, A, upper view (IY149-001), B, lateral view (IY149-002); C, NIGP 153119, Nj295, upper view (IY149-004); D–E, NIGP 153120, Nj294, D, upper view (IY146-013), E, upper view, close up showing cross section of the cusp (IY146-015); F–G, NIGP 153121, Nj294, F, basal view (IY146- 010), G, lateral view (IY146-011); H, NIGP 153122, Nj294, upper view (IY146-009). I–O, dextral Pb element; I–J, NIGP 153123, Nj294, I, upper view (IY146-024), J, lateral view (IY146-023); K–L, NIGP 153124, Nj294, K, upper view (IY146-032), L, lateral view (IY146-030); M–N, NIGP 153125, Nj294, M, lateral view (IY146-029), N, upper view (IY146-031); O, NIGP 153126, Nj294, upper view (IY146-025). Scale bars 100 µm, unless otherwise indicated.
Figure 28 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 28. Yangtzeplacognathus crassus (Chen & Zhang, 1993). A–B, Sa element, NIGP 153109, A, posterior view (IY146-036), B, lateral view (IY146-038); C, Sa element, NIGP 153110, lateral view (IY146-033). D–E, Sb element, NIGP 153111, D, antero-upper view (IY146-034), E, inner lateral view (IY146-035). F, sinistral Pa element, NIGP 153112, basal view (IY146-003). G–O, dextral Pa element; G–H, NIGP 153113, G, upper view (IY146-001), H, upper lateral view (IY146-002); I–J, NIGP 153114, I, basal view (IY146- 016), J, postero-lateral view (IY146-017); K–L, NIGP 153115, K, antero-upper view (IY146-004), L, upper view (IY146-005); M, NIGP 153116, upper view (IY146-020); N–O, NIGP 153117, N, basal view (IY146-021), O, lateral view (IY146-022). All from sample Nj294; scale bars 100 µm.
Figure 23. A–B in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 23. A–B, Venoistodus balticus Löfgren, 2006. M element; A, NIGP 153052, Nj296, posterior view (IY158-034); B, NIGP 153053, Nj296, posterior view (IY158-032). C–E, Protopanderodus liripipus Kennedy, Barnes & Uyeno, 1979. C–D, P element (low based); C, NIGP 153054, Nj406, inner lateral view (IY161-013); D, NIGP 153055, Nj406, outer lateral view (IY161-014). E, Sa element, NIGP 153056, Nj406, lateral view (IY155-010). F–L, Protopanderodus sp. F–G, Sa element, NIGP 153057, Nj297, lateral views (IY150-027, IY150-026). H–I, Sc element; H, NIGP 153058, Nj297, inner lateral view (IY150-028); I, NIGP 153059, Nj297, inner lateral view (IY150-029). J–L, Sb element, NIGP 153060, Nj296, J, outer lateral view (IY149-032), K, inner lateral view (IY149-031), L, basal view (IY149-030). M–N, Pseudooneotodus mitratus (Moskalenko, 1973). Pa element; M, NIGP 153061, Nj375, upper view (IY159-022); N, NIGP 153062, AFT-X-K13/44, upper view (IY164-029). O–P, Spinodus spinatus (Hadding, 1913). Sc element; O, NIGP 153063, Nj406, outer lateral view (IY161-001); P, NIGP 153064, Nj406, inner lateral view (IY161-002). Scale bars 100 µm.
Figure 27 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 27. Scolopodus? oistodiformis An & Ding, 1985. A–C, M element; A–B, NIGP 153104, Nj294, posterior view (IY148-020), B, basal view (IY148-019); C, NIGP 153105, Nj295, posterior view (IY149-008). D–E, Sa element, NIGP 153106, Nj294, D, anterior view (IY148-023), E, lateral view (IY148-031); F–G, Sb element, NIGP 153107, Nj294, F, basal-inner lateral view (IY148-022), G, outer lateral view (IY148-021). H–I, Sc element, NIGP 153108, Nj294, inner lateral view (IY148-030), I, outer lateral view (IY148-031). Scale bars 100 µm.
Figure 24 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 24. Pygodus anserinus Lamont & Lindström, 1957. A–F, Pa element; A, NIGP 153065, Nj276, upper view (IY152-022); B, NIGP 153066, Nj276, basal view (IY152-023); C, NIGP 153067, Nj388, upper view (IY155-002); D, NIGP 153068, Nj388, basal view (IY155- 003); E, NIGP 153069, Nj379, upper view (IY154-004); F, NIGP 153070, Nj389, upper view (IY155-004). G–I, Pb element; G, NIGP 153071, Nj378, outer lateral view (IY153-015); H, NIGP 153072, Nj376, basal-outer lateral view (Iy153-001); I, NIGP 153073, Nj376, inner lateral view (IY153-002). J, Sa element, NIGP 153074, Nj376, lateral view (IY153-003). K–L, Sb element, NIGP 153075, Nj377, K, outer lateral view (IY153-012), L, inner lateral view (IY153-013). M–P, Sd element; M–O, NIGP 153076, Nj376, M, posterior view (IY153-006), N, inner lateral view (IY153-007), O, outer lateral view (IY153-008); P, NIGP 153077, Nj379, outer lateral view (IY154- 008). Scale bars 100 µm.
Figure 22 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 22. Protopanderodus varicostatus (Sweet & Bergström, 1962); from the Pratt Ferry Formation of Alabama. A–C, Sa element, OSU 52807, from the topotype locality, A–B, lateral views (IYIY170-010, IY171-019), C, upper view showing cross section of cusp (IY170-012). D–E, Sb element, OSU 52808, from the topotype locality, D, inner lateral view (IY171-021), E, outer lateral view (IY170- 017). F–G, Pa element, OSU 52809, topotype, sample 64B2-12 from the top bed of the formation, F, inner lateral view (IY170-029), G, outer lateral view (IY171-016). H–M, Sc element; H–I, OSU 52810, from the topotype locality, H, outer lateral view (IY170-018), I, inner lateral view (IY171-022); J–K, OSU 52811, from the topotype locality, J, inner lateral view (IY170-020), K, outer lateral view (IY171-023); L–M, OSU 52812, from the topotype locality, L, inner lateral view (IY170-021)… (continued on facing page)
Figure 26. Scolopodus striatus Pander, 1856. A–B, P in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China
Figure 26. Scolopodus striatus Pander, 1856. A–B, P element (acontiodiform), NIGP 153092, Nj294, A, anterior view (IY148-14), B, posterior view (IY148-015). C–D, Sa element (subrounded), NIGP 153093, Nj294, C, posterior view (IY148-012), D, postero-lateral view (IY148-011). E–I, Sb element (short-based variant of compressed paltodiform); E–G, NIGP 153094, Nj294, E, inner lateral view (IY148-007), F, posterior view (IY148-008), G, antero-outer lateral view (IY148-006); H–I, NIGP 153095, Nj294, H, outer lateral view (IY148-029), I, upper view showing cross section of cusp (IY148-028). J–O, Sc element (medium-based variant of paltodiform); J, NIGP 153096, Nj292, inner lateral view (IY158-025); K–L, NIGP 153097, Nj292, K, inner lateral view (IY158-022), L, outer lateral view (IY158-020); M–O, NIGP 153098, Nj294, M, basal view of basal cavity (IY148-017), N, outer lateral view (IY148-016), O, inner lateral view (IY148-018). P–Q, Sd element (long-based variant of compressed paltodiform), NIGP 153099, Nj294, P, inner lateral view (IY148-009), Q, basal view of cusp (IY148-010). R–W, M element (short-based variant of paltodiform); R–S, NIGP 153100, Nj294, R, inner lateral view (IY148-004), S, outer lateral view (IY148-005); T–U, NIGP 153101, Nj292, T, inner lateral view (IY158-023), U, outer lateral view (IY158-024); V, NIGP 153102, Nj295, inner lateral view (IY149-009); W, NIGP 153103, Nj294, inner lateral view (IY158-031). Scale bars 100 µm.
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