Find research datasets worth reusing

Fig. 5 in Environmental distribution of post-Palaeozoic crinoids from the Iberian and south-Pyrenean basins, NE Spain

Fig. 5. Albian carbonate platform of Aralar with crinoid-bearing horizon (star) at the base of unit 4 (based on López-Horgue et al. 1997; Lertxundi and García-Mondéjar 1998; and new data from this paper).

Fig. 6 in Environmental distribution of post-Palaeozoic crinoids from the Iberian and south-Pyrenean basins, NE Spain

Fig. 6. Eocene stratigraphic units of the Graus-Tremp basin (Central Pyrenees) with crinoid-bearing horizon within the Serraduy Formation indicated (after Serra-Kiel et al. 1994). 24–26 correspond to magnetozones; n, normal; r, reverse.

Fig. 2 in Environmental distribution of post-Palaeozoic crinoids from the Iberian and south-Pyrenean basins, NE Spain

Fig. 2. Stratigraphic framework of the Upper Muschelkalk of the Catalan Ranges showing the crinoid-bearing Collbató unit (after Calbet and Marzo 1994). The horizon containing crinoids (star) coincides with the maximum flooding surface and is laterally equivalent to La Riba reef complex. Abbreviations: M.M., Middle Muschelkalk; Roj., Rojals; H.S.T., Highstand system track; L.S.T., Lowstand system track; M.f.s., Maximun flooding surface; S.B., Sequence boundary; T.S., Transgressive surface; T.S.T., Transgressive system track.

Fig. 1 in Environmental distribution of post-Palaeozoic crinoids from the Iberian and south-Pyrenean basins, NE Spain

Fig. 1. Map of northeast Spain showing post-Palaeeozoic crinoid localities (stars) discussed in the text.

Fig. 3 in Environmental distribution of post-Palaeozoic crinoids from the Iberian and south-Pyrenean basins, NE Spain

Fig. 3. Stratigraphy of Upper Jurassic crinoid localities (on the top) from the Iberian Ranges. Stars indicate crinoid-bearing formations.

Fig. 7 in First record of chambered hexactinellid sponges from the Palaeozoic

Fig. 7. Three-armed branched individual of chambered hexactinellid sponge Casearia devonica sp. nov., BSPG 2012 I 47a (paratype) from the Lower Emsian at Colle, Cantabrian Mountains, NW Spain. Central branch exhibiting almost longitudinal section with chambers gradually increasing in size from base to top, and axial spongocoel. Irregular gastral surface within spongocoel, showing possible openings of exhalant canals (arrows). Sponge encrusted by fistuliporid bryozoans, at least some of which colonized surface of sponge post mortem, see, e.g., bryozoan fully overgrowing the osculum.

Fig. 6 in First record of chambered hexactinellid sponges from the Palaeozoic

Fig. 6. Chambered hexactinellid sponge Casearia devonica sp. nov., BSPG 2012 I 46c (holotype) from the Lower Emsian at Colle, Cantabrian Mountains, NW Spain. A. Detail of Fig. 5C; branch with irregularly-chambered structure, sectioned roughly parallel to growth direction and tangentially to dermal cortex. Upper chambers exhibiting seemingly irregular hexactinellid framework, which shows regular rectangular meshes in radial cross-sections (compare with Figs. 7 and 8A). B. Detail of A, showing tangentially-sectioned dermal cortex of small chamber (indicated by arrow), completely enclosed by considerably larger subsequent chamber. Triangular meshes of dermal cortex resulting from interconnecting, spherically-enlarged multiradiate nodes. C. Detail of lowermost chamber in A; tangential section showing enlarged nodes forming dermal cortex and producing triangular meshes (arrowed), and regular rectangular meshes directly below dermal cortex.

Fig. 1. A in First record of chambered hexactinellid sponges from the Palaeozoic

Fig. 1. A. Geological map of the Cantabrian Zone with the provinces and units of Julivert (1971) and Pérez-Estaún et al. (1988). B. Simplified geological map of the Esla Nappe near Colle, showing location of study area. Based on Lobato et al. (1984). Modified after Fernández et al. (2006).

Fig. 3 in First record of chambered hexactinellid sponges from the Palaeozoic

Fig. 3. Stratigraphic section of Valporquero Formation at Colle, showing facies distribution including polymicritic mud mounds and part of section from which chambered hexactinellid sponge Casearia has been collected from mud mound facies. Modified after Fernández et al. (2006).

Fig. 8 in First record of chambered hexactinellid sponges from the Palaeozoic

Fig. 8. Chambered hexactinellid sponge Casearia devonica sp. nov. A. BSPG 2012 I 46b (holotype); regular rectangular meshes of hexactinosidan skeleton in radial cross section. Note paragaster in lower right of image and dissolved centres of several thickened spicule nodes (arrowed) which seem to be identical with those forming pseudolychniscid structures similar to that described, e.g., by Müller (1974). B. BSPG 2012 I 47a (paratype); dermal cortex between two chambers, constructed of single thickened hexactine layer with spherically-enlarged nodes. Nodes often irregularly elongated perpendicular to surface of wall (arrow).

Fig. 4 in First record of chambered hexactinellid sponges from the Palaeozoic

Fig. 4. Field image of a small polymicritic mud mound containing Casearia devonica sp. nov., Colle, Cantabrian Mountains; Lower Emsian.

Fig. 2. A in First record of chambered hexactinellid sponges from the Palaeozoic

Fig. 2. A. Chronostratigraphic chart, showing Devonian lithostratigraphic units of Asturo-Leonese facies that have been defined in the regions of Asturias (northern part of the Cantabrian Zone) and León (southern part of the Cantabrian Zone). Absolute ages based on Gradstein et al. (2004). Stratigraphic subdivision of the La Vid Group according to Vilas Minondo (1971) and Vera de la Puente (1989), but subdivision by Keller (1988) is also shown. B. Simplified stratigraphy of La Vid Group in relation to sea-level development (based on Keller and Grötsch 1990) showing location of studied interval of Valporquero Formation. Modified after Fernández et al. (2006).

opencc-by-4.0Jun 2010View details →

Fig. 2. Oepikellid ostracods from Palaeozoic erratic boulders. A in Sexual dimorphism and pore systems in Ordovician ostracodes

Fig. 2. Oepikellid ostracods from Palaeozoic erratic boulders. A. Holotype of the type species of the oepikellid ostracod Levisulculus, Levisulculus lineatus Jaanusson, 1957 (UM T89), female left valve, length (L) 0.89 mm. B. Holotype of Primitia extraria Öpik, 1937 (TUG 1120−1; Kukruse Stage, Estonia), tecnomorphic right valve, L 0.88 mm. C. Holotype of Primitia troedssoni Thorslund, 1940 (UM T10), tecnomorphic right valve, L 0.79 mm. D. Holotype of Primitia granulosa Thorslund, 1940 (UM T11), tecnomorphic right valve, L 0.86 mm (Jaanusson 1957: pl. 8: 12, Öpik 1937: pl. 10: 19, Thorslund 1940: pl. 1: 16, 13). E–H. Primitia elongata obliqua Steusloff, 1895: type series, all tecnomorphic valves embedded in rock. Geschiebe (glacial erratic boulder) from Neubrandenburg. E. Lectotype GG 114−27, left valve, L 1.16 mm (without velum). F. GG 114−26, right valve, L 1.07 mm. G. GG 114−28, right valve, L 0.99 mm (without velum). H. GG 114−29, right valve, L 0.82 mm. I. Primitia canaliculata Steusloff, 1895, holotype GG 114−25, steinkern of a juvenile right valve embedded in rock, L 0.70 mm, same erratic boulder.

opencc-by-4.0Oct 2009View details →

Fig. 1 in Late Palaeozoic foliage from China displays affinities to Cycadales rather than to Bennettitales necessitating a re-evaluation of the Palaeozoic Pterophyllum species

Fig. 1. Map of NE China and Korea showing the localities from which Pseudoctenis samchokense fossils have been collected (grey symbols) and the locality from which Primocycas chinensis fossils have been described (black symbol).

FIGURE 14 in Virtual palaeontology: the effects of mineral composition and texture of fossil shell and hosting rock on the quality of X-ray microtomography (XMT) outcomes using Palaeozoic brachiopods

FIGURE 14. Three-dimensional rotational model (video) of Timaniella harkeri (GSC26406). For video see palaeo-electronica.org/content/2017/1891-xmt-on-brachiopod-fossils.

FIGURE 12 in Virtual palaeontology: the effects of mineral composition and texture of fossil shell and hosting rock on the quality of X-ray microtomography (XMT) outcomes using Palaeozoic brachiopods

FIGURE 12. XMT result of Tyloplecta nankingensis (Q-2). 1-7, serial slices in the transverse plane (from dorsal to ventral). 8-14, serial slices in the coronal plane (from posterior to anterior). 15-18, serial slices in the sagittal plane (from lateral to middle). 19-21, lateral (19), ventral (20) and dorsal (21) views of the reconstructed 3-D model (external shell). 22, ventral view of the 3-D model in transparent mode. All the slice images were obtained under false-color lookup tables (Color 1 option in DataViewer). Abbreviations: cp, cardinal process; ap, adductor platform; ms, median septum; mc, muscle scar.

FIGURE 13 in Virtual palaeontology: the effects of mineral composition and texture of fossil shell and hosting rock on the quality of X-ray microtomography (XMT) outcomes using Palaeozoic brachiopods

FIGURE 13. Three-dimensional reconstruction model of internal shell structures of Timaniella harkeri (GSC26406). 1-6, dorsal and anterior views of the whole shell interior through posteriorly continuous rotation. 7-12, dorsal and anterior views of shell interior without spiralia through posteriorly continuous rotation.

FIGURE 11 in Virtual palaeontology: the effects of mineral composition and texture of fossil shell and hosting rock on the quality of X-ray microtomography (XMT) outcomes using Palaeozoic brachiopods

FIGURE 11. XMT result of Meekella sangzhiensis (Q-1). 1-7, serial slices in the coronal plane (from posterior to anterior). 8-15, serial slices in the transverse plane (from ventral to dorsal). 16-21, serial slices in the sagittal plane (from lateral to middle). 22-24, lateral (22), ventral (23) and dorsal (24) views of the reconstructed 3-D model (external shell). 25, ventral view of the 3-D model in transparent mode. All the slice images were obtained under false-color lookup tables (Color 1 option in DataViewer). Abbreviation: dp, dental plate.

FIGURE 9 in Virtual palaeontology: the effects of mineral composition and texture of fossil shell and hosting rock on the quality of X-ray microtomography (XMT) outcomes using Palaeozoic brachiopods

FIGURE 9. XMT result of Cyrtospirifer whitneyi (CD). 1-10, serial slices in the coronal plane (from posterior to anterior). 11-18, serial slices in the transverse plane (from ventral to dorsal). 19-24, serial slices in the sagittal plane (from lateral to middle). 25-28, lateral (25), ventral (26), dorsal (27) and posterior (28) views of the reconstructed 3-D model (external shell). 29, ventral view of the 3-D model in transparent mode. All the slice images were obtained under falsecolor lookup tables (Color 1 option in DataViewer). Abbreviations: dp, dental plates; tt, teeth.

FIGURE 10 in Virtual palaeontology: the effects of mineral composition and texture of fossil shell and hosting rock on the quality of X-ray microtomography (XMT) outcomes using Palaeozoic brachiopods

FIGURE 10. XMT result of Spiriferidae gen. sp. indet. (S1). 1-8, serial slices in the coronal plane (from posterior to anterior). 9-15, serial slices in the transverse plane (from ventral to dorsal). 16-21, serial slices in the sagittal plane (from lateral to middle). 22-24, lateral (22), ventral (23) and posterior (24) views of the reconstructed 3-D model (external shell). 25, ventral view of the 3-D model in transparent mode. All the slice images were obtained under false-color lookup tables (Color 1 option in DataViewer). Abbreviation: dp, dental plates.