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42 results for “Wenlock”
Fig. 4. Cladistic analysis. A in Evolution of the retiolitid Neogothograptus (Graptolithina) and its new species from the upper Wenlock of Poland, Baltica
Fig. 4. Cladistic analysis. A. Our preferred of four most parsimonious trees (see text for explanation) showing positions of character state changes. Letters (characters) and numbers (states for each character) correspond to codings shown in Appendix 1. Asterisks indicate state changes to a polymorphic condition for groups of taxa above the corresponding node. B. Strict consensus tree for the cladistic analysis of the matrix shown in Appendix 2, all characters unordered and unweighted. Pseudoplectograptus was used as the outgroup taxon. Tree length: 39; consistency index: 0.769; rescaled consistency index: 0.553; retention index: 0.719; homoplasy index: 0.487. Abbreviations: B., Baculograptus; E., Eisenackograptus; G., Gothograptus; N., Neogothograptus.
Fig. 9 in New Wenlock-Pridoli (Silurian) acanthodian fishes from Lithuania
Fig. 9. Ranges of new taxa superimposed on the local stratigraphical units in the selected boreholes.
Fig. 8 in New Wenlock-Pridoli (Silurian) acanthodian fishes from Lithuania
Fig. 8. Rohonilepis breviornatus gen. et sp. nov. A–D. SEM micrographs of scales, crown views, anterior upwards. A. LIGG 25−A−2457. B. LIGG 25−A−2458. C. Holotype, LIGG 25−A−2459. D. LIGG 25−A−2461. E, F. Microstructure of scales in vertical longitudinal sections. E1. Thin section LIGG 3726, general view. E2. Detail of the upper right crown part of the same scale. F. Thin section LIGG 3727. Scale bars 0.1 mm. Kurtuvėnai−162 borehole, depth 1103.0 m. Upper Silurian, Ludlow, Ventspils Formation.
Fig. 7 in New Wenlock-Pridoli (Silurian) acanthodian fishes from Lithuania
Fig. 7. Bracteatacanthus assiduus gen. et sp. nov. A–E. SEM micrographs of trunk scales; crown views, anterior upwards, except for B, lateral view, anterior to the left. A. LIGG 25−A−2450. B. LIGG 25−A−2451. C. LIGG 25−A−2452. D. Holotype, LIGG 25−A−2453. E. LIGG 25−A−2454. F, G. Microstructure of scales in vertical longitudinal sections. F1. Thin section LIGG 3705, general view. F2. Detail of the left part of crown and base apex of the same scale. G1. Thin section LIGG 3708. G2. Detail of the left part of crown and base apex of the same scale. G3. The same scale, detail of the right part. Scale bars 0.1 mm. Nida−44 borehole, depth 1213.0 m. Upper Silurian, Pridoli, Rietavas Beds of the Jūra Formation.
Fig. 5 in New Wenlock-Pridoli (Silurian) acanthodian fishes from Lithuania
Fig. 5. Fecundosquama basiglobosa gen. et sp. nov. Microstructure of trunk scales in vertical transverse (A) and longitudinal (B, C) sections. A1. Thin section LIGG 3683. A2. Detail of the left part of the same scale. B1. Thin section LIGG 3686. B2. Detail of the right part of the base of the same scale. B3. Detail of the central part of crown and bordering base area of the same scale. C1. General view, thin section LIGG 3687. C2. The same scale, detail of the right part of crown and bordering base area. Scale bars 0.1 mm. Kurtuvėnai−162 borehole, depth 1052.2 m. Upper Silurian, Pridoli, Jūra Formation (A1, A2 and B1–B3) and Ledai−179 borehole, depth 537.7 m. Upper Silurian, Pridoli, Lapės Formation.
Fig. 6 in New Wenlock-Pridoli (Silurian) acanthodian fishes from Lithuania
Fig. 6. Arenaceacanthus arcuatacanalis gen. et sp. nov. A–D. SEM micrographs of trunk scales, crown views, anterior upwards. A. Holotype, LIGG 25−A−2443. B. LIGG 25−A−2444. C. LIGG 25−A−2446. D. LIGG 25−A−2447. E, F. Microstructure of scales in vertical longitudinal (E) and vertical transverse (F) sections. E1. General view, thin section LIGG 3731. E2. Detail of the left side, the lower part of crown and bordering base strip of the same scale. F1. Thin sectionLIGG 3733, general view. F2. Enlarged mainpartof the samescale. Scale bars 0.1 mm. Ledai−179 borehole, depth 547.6 m. Upper Silurian, Pridoli, Vievis Formation.
Fig. 4 in New Wenlock-Pridoli (Silurian) acanthodian fishes from Lithuania
Fig. 4. Fecundosquama basiglobosa gen. et sp. nov. SEM micrographs of scales. A, B, and E. Trunk scales. A. Holotype, LIGG 25−A−2405, anterolateral view, anterior to the left. B. LIGG 25−A−2407, crown view, anterior upwards. E. LIGG 25−A−2406, lateralview, anteriorto the left. C, D. Head? scales, crown views, anterior upwards. C. LIGG 25−A−2409. D. LIGG 25−A−2408. Scale bars 0.1 mm. Gėluva−99 borehole, depth 681.6 m. Upper Silurian, Pridoli, Vievis Formation.
Fig. 3 in New Wenlock-Pridoli (Silurian) acanthodian fishes from Lithuania
Fig. 3. Vesperalia perplexa gen. et sp. nov. Microstructure of scales in vertical longitudinal (A) and transverse (B) sections. A1. Holotype−like scale with uniformbent, sub−parallelridgesprominentattheanteriorand posterioredges ofthecrown, and almostfadingoutnear thecrown center. ThinsectionLIGG 3678. A2. Detail of posterior edge of crown and a small portion of base of the same scale. B1. Widened scale with flattened ridges like those in Fig. 2E. Thin sectionLIGG 3679. B2. Detail of the leftpart of the same scale. B3. Detail of the rightpart of the same scale. Scale bars 0.1 mm. Stoniškiai−1borehole, depth 1211.0–1217.0 m. Upper Silurian, Pridoli, Rietavas Beds of the Jūra Formation.
Fig. 2 in New Wenlock-Pridoli (Silurian) acanthodian fishes from Lithuania
Fig. 2. Vesperalia perplexa gen. et sp. nov. SEM micrographs, trunk scales except for F, head? scale, crown views, anterior upwards: holotype, LIGG 25−A−2413 (A), LIGG 25−A−2416 (B), LIGG 25−A−2417 (C), LIGG 25−A−2418 (D), LIGG 25−A−2420 (E), LIGG 25−A−2422 (F), LIGG 25−A−2421 (G), LIGG 25−A−2414(H). Scalebars0.1 mm.Nida−44borehole, depth1213.0 m(A, E–H) andStoniškiai−1borehole, depth1211.0–1217.0 m(B–D). Upper Silurian, Pridoli, Rietavas Beds of the Jūra Formation.
Fig. 1 in New Wenlock-Pridoli (Silurian) acanthodian fishes from Lithuania
Fig. 1. Sketch map showing location of the boreholes yielding the majority of the material studied. Borehole and its original number: 1−Stoniškiai, 7−Krekenava, 8−Stačiūnai, 11−Šešuvis, 12−Kunkojai, 44−Nida, 61−Viduklė, 87−Sutkai, 99−Gėluva, 128−Vilkaviškis, 137−Liepkalnis, 162−Kurtuvėnai, 179−Ledai, 241−Butkūnai, 252−Svėdasai.
Text-fig. 1. Position of the Bykoš locality. in Lower Wenlock Chitinozoa From The Bykoš Locality (Silurian, Prague Basin, Barrandian Area, Czech Republic)
Text-fig. 1. Position of the Bykoš locality.
FIGURE 7 in A new generic name, Semigothograptus, for Gothograptus? meganassa Rickards & Palmer, 2002, from the Silurian post- lundgreni Biozone recovery phase, and comparative morphology of retiolitids from the lowermost upper Homerian (upper Wenlock)
FIGURE 7. SEM pictures of nassa type genicular hoods of Gothograptus nassa Holm, 1890 and Semigothograptus meganassa (Rickards & Palmer, 2002). A – D. Semigothograptus meganassa, ZPAL G. 54 / 1, 1649.2 m, Bartoszyce IG- 1 drill core, Poland, uppermost part of dubius / nassa Biozone, A. hood of th 2 2 with marked surface bandages (arrow). B. enlargement showing pustules on parallel bandages (arrow), C. hood of th 1 2 with marked space between bandages (arrow), D. hood of th 3 2, surface bandages (arrow). E – H. Gothograptus nassa, Bartoszyce IG- 1, 1655.8 m, dubius / nassa Biozone, E. whole hood of th 3 2, irregular bandages arrowed, specimen ZPAL G. 54 / 3. F – G. enlargement of hood, ZPAL G. 54 / 9, F. showing pustules on parallel bandages (arrows), G. presenting edges of subjacent bandages (arrows). H. fragment of hood of mature specimen with thick layer of irregular bandages with distinctive pustules and parallel bandages (arrow), ZPAL G. 54 / 6.
FIGURE 6 in A new generic name, Semigothograptus, for Gothograptus? meganassa Rickards & Palmer, 2002, from the Silurian post- lundgreni Biozone recovery phase, and comparative morphology of retiolitids from the lowermost upper Homerian (upper Wenlock)
FIGURE 6. Silurian paleogeographic map with occurrences of Semigothograptus new genus. Localities and graptolite data derived from the following literature sources; 1. Northeastern Poland (Baltica): this paper. 2. United Kingdom (Avalonia): Rickards & Palmer 2002. 3. Bohemia: KozłowskāDawidziuk et al. 2001. 4. Thuringia (Saxo-Thuringia): Jaeger 1991.
FIGURE 5 in A new generic name, Semigothograptus, for Gothograptus? meganassa Rickards & Palmer, 2002, from the Silurian post- lundgreni Biozone recovery phase, and comparative morphology of retiolitids from the lowermost upper Homerian (upper Wenlock)
FIGURE 5. Stratigraphical ranges of the Semigothograptus meganassa (Rickards & Palmer, 2002) in the Homerian at United Kingdom (Rickards & Palmers 2002), Czech Republic (Kozłowska et al. 2001), Germany (Maletz 2010), and Poland (Kozłowska this paper). Abbreviations: L. Hom.—Lower Homerian, Rep.—Republic.
FIGURE 3 in A new generic name, Semigothograptus, for Gothograptus? meganassa Rickards & Palmer, 2002, from the Silurian post- lundgreni Biozone recovery phase, and comparative morphology of retiolitids from the lowermost upper Homerian (upper Wenlock)
FIGURE 3. Light photos of Semigothograptus meganassa (Rickards & Palmer, 2002), specimen broken into two parts, ZPAL G.54/2, Bartoszyce IG-1 drill core, depth 1649.2 m; A. with sediment before cleaning in HF; B–C. two sides of lower part of the fragment after cleaning in HF. Abbreviation: lat. ap. rod—lateral apertural rod.
FIGURE 4 in A new generic name, Semigothograptus, for Gothograptus? meganassa Rickards & Palmer, 2002, from the Silurian post- lundgreni Biozone recovery phase, and comparative morphology of retiolitids from the lowermost upper Homerian (upper Wenlock)
FIGURE 4. Comparison of the main structures of tubaria used in this study. A. Papiliograptus papilio Lenz & Kozłowska- Dawidziuk, 2002, Šiupyliai-69 borehole, Lithuania; B. Semigothograptus meganassa (Rickards & Palmer, 2002), ZPAL G.54/ 1, Bartoszyce IG-1 drill core, depth 1649.2 m; C-D. Gothograptus nassa Holm, 1890, C. young colony, reverse side, ZPAL G.54/4, Bartoszyce IG-1 drill core, depth 1656.8 m, D. mature colony with broken distal end, obverse side, ZPAL G.54/5, Bartoszyce IG-1 drill core, depth, 1655.8 m. Scale 1 mm for all pictures. Abbreviations: anc.—ancora, sl.—sleeve, umbr.— umbrella.
FIGURE 2 in A new generic name, Semigothograptus, for Gothograptus? meganassa Rickards & Palmer, 2002, from the Silurian post- lundgreni Biozone recovery phase, and comparative morphology of retiolitids from the lowermost upper Homerian (upper Wenlock)
FIGURE 2. Proximal ends showing ancora umbrella looping meshes of A. Gothograptus nassa Holm, 1890 early growth stage, ZPAL G.54/7, Bartoszyce IG-1 drill core, depth 1656.8 m; B. Semigothograptus meganassa (Rickards & Palmer, 2002), ZPAL G.54/1, Bartoszyce IG-1 drill core, depth 1649.2 m.
FIGURE 1 in A new generic name, Semigothograptus, for Gothograptus? meganassa Rickards & Palmer, 2002, from the Silurian post- lundgreni Biozone recovery phase, and comparative morphology of retiolitids from the lowermost upper Homerian (upper Wenlock)
FIGURE 1. Tubaria of A–C. Gothograptus nassa Holm, 1890 and D. Semigothograptus meganassa (Rickards & Palmer, 2002) from dubius/nassa Biozone, Bartoszyce IG-1 drill core, Poland. A. Gothograptus nassa, obverse view of mature tubarium with destroyed distal end, long morphotype, ZPAL G.54/5, 1655.8 m, B. latero-ventral view of mature tubarium with appendix, short morphotype, ZPAL G.54/8, 1658.8 m, C. long appendix, ZPAL G.54/10, 1656.8 m. D. Semigothograptus meganassa, obverse view, ZPAL G.54/1, 1649.2 m, uppermost part of dubius/nassa Biozone.
FIGURE 7 in A new generic name, Semigothograptus, for Gothograptus? meganassa Rickards & Palmer, 2002, from the Silurian post- lundgreni Biozone recovery phase, and comparative morphology of retiolitids from the lowermost upper Homerian (upper Wenlock)
FIGURE 7. SEM pictures of nassa type genicular hoods of Gothograptus nassa Holm, 1890 and Semigothograptus meganassa (Rickards & Palmer, 2002). A–D. Semigothograptus meganassa, ZPAL G.54/1, 1649.2 m, Bartoszyce IG-1drill core, Poland, uppermost part of dubius/nassa Biozone, A. hood of th22 with marked surface bandages (arrow). B. enlargement showing pustules on parallel bandages (arrow), C. hood of th12 with marked space between bandages (arrow), D. hood of th32, surface bandages (arrow). E–H. Gothograptus nassa, Bartoszyce IG-1, 1655.8 m, dubius/nassa Biozone, E. whole hood of th32, irregular bandages arrowed, specimen ZPAL G.54/3. F–G. enlargement of hood, ZPAL G.54/9, F. showing pustules on parallel bandages (arrows), G. presenting edges of subjacent bandages (arrows). H. fragment of hood of mature specimen with thick layer of irregular bandages with distinctive pustules and parallel bandages (arrow), ZPAL G.54/6.
Wenlock Edge Crinoid Cairn
Source: Objaverse 1.0 / Sketchfab
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