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594 results for “Carboniferous”
Figure 2 in Facies, origin, and palaeontological inventory of an Early Carboniferous neptunian dyke in the Devonian reef limestone near Rösenbeck (Brilon Anticline, Rhenish Mountains)
Figure 2. Examples of neptunian dykes in the Middle Devonian limestone in the Rösenbeck quarry. (a) Funnel-shaped dyke largely filled with debris and mud. (b) Cave-like dyke filled with Early Carboniferous shales.
Figure 3 in Facies, origin, and palaeontological inventory of an Early Carboniferous neptunian dyke in the Devonian reef limestone near Rösenbeck (Brilon Anticline, Rhenish Mountains)
Figure 3. The position of the studied samples in the outcrop at the south-eastern margin of the limestone quarry. Sample A is from the top of the Middle Devonian reef limestone, and samples B to G are Early Carboniferous dyke sediments.
Figure 1 in Facies, origin, and palaeontological inventory of an Early Carboniferous neptunian dyke in the Devonian reef limestone near Rösenbeck (Brilon Anticline, Rhenish Mountains)
Figure 1. Geological map of the Brilon Syncline (after Bär, 1968) with the position of the Rösenbeck locality (marked by a star) at the eastern margin of the Brilon carbonate complex.
FIGURE 12 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 12. Time span of the species of Pygocephalomorpha during the Carboniferous of North America, the UK and continental Europe. Abbreviation: Ks, Kasimovian.
FIGURE 11 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 11. Frequency plot of the distribution of ingroups of Eumalacostraca and of its sister-group Phyllocarida, during the Carboniferous (A) of North America, the UK and continental Europe, the Mississippian (B) and the Pennsylvanian (C).
FIGURE 10 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 10. Restoration drawings of the pygocephalmorphan Anthracaris gracilis (Meek and Worthen, 1865) and Pygocephalus cooperi Huxley, 1857. (A–C) A. gracilis. (A) Dorsal aspect. (B) Ventral aspect of putative female, note the pouch on the last thorax segment. (C) Ventral aspect of putative male. (D–F) P. cooperi. (D) Dorsal aspect. (E) Ventral aspect of female with thorax sternites hidden by oostegites. (F) Putative male in ventral aspect.
FIGURE 8 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 8. Restoration drawings of shields of pygocephalmorphans. (A) Specimen 1.587, (B) 1.228 and (C) Pal.590-2 of Anthracaris gracilis (Meek and Worthen, 1865) from the Carboniferous of Germany. (D) Anthracaris gracilis, based on Brooks (1962, pl. 32, fig. 2). (E) Pygocephalus cooperi Huxley, 1857, based on Schram (1979, fig. 39a). (F) Pygocephalus dubius (Prestwich, 1840), based on Schram (1979, fig. 39c).
FIGURE 7 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 7. Plot of the eumalacostracan shields of Anthracaris gracilis (Meek and Worthen, 1865) from the Carboniferous of Germany (1.587A, Pal.590-2, 1.228A) and of A. gracilis from Mazon Creek, USA. Values for A. gracilis from Brooks (1962).
FIGURE 5 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 5. Anthracaris gracilis (Meek and Worthen, 1865) from the Carboniferous of Germany. (A) Virtually overlaid part and counterpart of specimen 1.529. (B) Same as A, but structures colour marked. Abbreviations: ab = antenna basipod; ant = antenna; atl = antennula; ec = eye cornea; es = eye stalk; lb = labrum; md = mandible; ml = maxillula; mx = maxilla; pl = pleon; sc = scaphocerite; tp1–8 = thoracopod 1–8; ts1–8 = thoracic segment 1–8.
FIGURE 4 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 4. Anthracaris gracilis (Meek and Worthen, 1865) from the Carboniferous of Germany. Digital microscopy images of shields. (A–G) Specimen 1.587 in dorsal view. (A–C) Part. (D, E) Counterpart. (A, D) Non-polarized co-axial light. (B, E) Polarized co-axial light. (C) Ring light. (F) Detail of B, antero-lateral shield corner. (G) Detail of B, rostrum. (H) Detail of Pal590-2, antero-lateral shield corner, mirrored. Images of the counterpart are mirrored. Abbreviations: als = antero-lateral spine; g = groove; ls = lateral spine; p = punctuations; r = rostrum.
FIGURE 2 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 2. Anthracaris gracilis (Meek and Worthen, 1865) from the Carboniferous of Germany. Digital microscopy image of part (A–C) and counterpart (D–F) (specimen 1.529), in ventral view. (A, D) Ring light. (B, D) non-polarized coaxial light. (C, F) polarized co-axial light.
FIGURE 3 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 3. Anthracaris gracilis (Meek and Worthen, 1865) from the Carboniferous of Germany. Digital microscopy images of shields. (A–D) Dorsal view of specimen 1.228. (A, B) Part. (C, D) Counterpart. (E, F) Dorsal view of specimen Pal590-2. (A, C, E) Non-polarized co-axial light. (B, D, F) Polarized co-axial light. Images of the counterparts are mirrored. Abbreviations: als = antero-lateral spine; ls = lateral spine; r = rostrum.
FIGURE 1 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America
FIGURE 1. Schematic drawing of a pygocephalomorphan shield in dorsal aspect, showing the measurements taken for the morphometric analysis. 1: Length of rostrum, 2: Length of shield, 3: Width of anterior (outer) margin, 4: Medial width, 5: Width of posterior margin, 6: Length of antero-lateral spine.
Fig. 1 in New basal Odonatoptera (Insecta) from the lower Carboniferous (Serpukhovian) of Argentina.
Fig. 1.- Photograph of Tupacsala niunamenos gen. nov. et sp. nov. from Guandacol 1 locality, Quebrada de las Libélulas, Cerro Guandacol, province of La Rioja, Northwest Argentina. Lowermost part of Guandacol Formation (circa 325-324 Ma). Holotype specimen MACN-In 2678C. Scale bar = 2 mm.
Fig. 8 in Toward the origin of amniotes: Diadectomorph and synapsid footprints from the early Late Carboniferous of Germany
Fig. 8. Stratocladogram of tetrapod phylogeny. Although extending the known body fossil record, the stratigraphic position of the diadectomorph and synapsid footprints from the Bochum Formation of western Germany fits well the phylogenetic pattern. Black bars indicate the known record of skeletal remains (Reisz 1986; Kissel and Reisz 2004a, b). Cladogram topology and minimum times of divergence are based on Kissel and Reisz (2004a, b), Müller and Reisz (2004), and Reisz (2007). The chronostratigraphic scale is adopted from Menning (2005).
Fig. 7 in Toward the origin of amniotes: Diadectomorph and synapsid footprints from the early Late Carboniferous of Germany
Fig. 7. Comparison of trackway pattern and selected parameters of Dimetropus sp. from the Late Carboniferous Bochum Formation, Ruhr area, Germany, DBM 060003260001 to DBM 060003260005 (A) and Dimetropus leisnerianus from the Early Permian Tambach Formation, Thuringian Forest, Germany, MNG 1762 (B), MNG 1828 (C), MNG 13490 (D). E, F. Derived trackway and imprint parameters graphically expressing the mean, minimum, and maximum values. G, H. Relative lengths of the manus and pes imprint digit lengths expressed as a percentage of the length of digit IV. Data source for E–H, see Appendix 4.
Fig. 3 in Toward the origin of amniotes: Diadectomorph and synapsid footprints from the early Late Carboniferous of Germany
Fig. 3. Undertrack preservation in Ichniotherium tetrapod footprints. A. Ichniotherium praesidentis (Schmidt, 1956) from the Late Carboniferous Bochum Formation, Ruhr area, Germany; DBM 060003309003. B–D. Ichniotherium cottae (Pohlig, 1885) from Early Permian strata of the Thuringian Forest area, Germany; MNG 2049 (B), MNG 1871 (C), and MNG 2016 (D). Semicircularly arranged spherical imprints of the digit tips of the digits I–III or I–IV, which are typical in appearance to the undertrack preservation of Ichniotherium. Scale bars 100 mm.
Fig. 6 in Toward the origin of amniotes: Diadectomorph and synapsid footprints from the early Late Carboniferous of Germany
Fig. 6. Comparison between tracks of Dimetropus sp. from the Late Carboniferous Bochum Formation, Ruhr area, Germany, DBM 060003260001 (A) and DBM 060003260003 (B) and Dimetropus leisnerianus (Geinitz, 1863) from the Early Permian Tambach Formation, Thuringian Forest, Germany, MNG 1762 (C). Scale bars 100 mm.
Fig. 4 in Toward the origin of amniotes: Diadectomorph and synapsid footprints from the early Late Carboniferous of Germany
Fig. 4. Graphic comparisons of the trackway pattern and selected parameters of three Ichniotherium ichnospecies. A. Ichniotherium praesidentis from the Bochum Formation, Late Carboniferous, Germany; DBM 060003309001 to DBM 060003309004, part). B–D. Ichniotherium sphaerodactylum from the Tambach Formation, Early Permian, Germany; MB ICV.2 (B), MNG 1351 (C), and GZG 1270 (D). E–G. Ichniotherium cottae from the Tambach Formation, Early Permian, Germany; MNG 10179 (E), UGBL F1 (F), and MNG 1352 (G). H, I. Derived trackway and imprint parameters graphically expressing the mean, minimum, and maximum values. J, K. Relative lengths of the manus and pes imprint digit lengths expressed as a percentage of the length of digit IV. Data source for H–K, see Appendix 2.
Fig. 2 in Toward the origin of amniotes: Diadectomorph and synapsid footprints from the early Late Carboniferous of Germany
Fig. 2. Tetrapod footprints of Ichniotherium praesidentis (Schmidt, 1956) from the Late Carboniferous Bochum Formation, Ruhr area, Germany, represented by the longest and best preserved trackway of the holotype. Photograph and drawing are based on the four−part resin replica (DBM 060003309001 to DBM 060003309004). Note: the first two imprints are erroneously replicated twice and therefore not shown in the outline drawing. Dotted zigzag line links the pes imprints, and dotted track outlines indicate the position of imprints, which are reasoned from the step cycle but not preserved on the cast.
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