Estratigrafía del Serpukhoviense y el Bashkiriense inferior (Carbonífero) en la provincia de Pliegues y Mantos, Zona Cantábrica

The lateral relationships among the San Adrián, Canalón and Olaja members of the upper part of the Alba Fm. are discussed. These rocks are considered to be parts of a carbonate ramp developed from latest Viséan or early Pendleian to middle Arnsbergian times. The new name Millaró Beds is proposed herein for a thin interval of marine beds with middle-upper Arnsbergian ammonoids and conodonts, and laterally equivalent to part of the Olaja Mb. The Millaró Beds constitute the upper part of the Alba Fm. providing an additional criterion for the identification of the boundary between the Alba and Barcaliente formations at many sections across the Cantabrian Mountains. These beds represent sedimentation in a starved basin and a transgresive event at the beginning of the Variscan foredeep formation. This basin was subsequently filled by the siliciclastic rocks of the Cuevas Fm. and the marginal carbonates of the Barcaliente Fm. The review of both published and new conodont data are applied to the recognition of different stages around the Mississippian/Pennsylvanian boundary. Finally, the distribution of conodont genera in the upper Arnsbergian to Kinderscoutian Barcaliente Fm is also given.Asturias (Comunidad Autónoma). Consejería de Educación y Cultura; PB2002-079Ministerio de Ciencia y Tecnología; BTE2002-03819Ministerio de Ciencia y Tecnología; BTE2003-01012Ministerio de Ciencia y Tecnología; BTE2003-0160

Problemas en el reconocimiento del límite Misisipiense/Pensilvaniense en el Norte de la Península Ibérica

XXI Jornadas de la Sociedad Española de Paleontología, Sevilla 4-8 Octubre 2005Se discute el origen de una nueva sub-especie del conodonto Declinognathodus noduliferus y su probable aparición más temprana que D. inaequalis en el norte de la Península Ibérica.Ministerio de Educación y Ciencia; BTE2003-01609Ministerio de Educación y Ciencia; BTE-0101

Bairdia (Bairdia) siliklensis Rozhdestvenskaja 1962

<i>Bairdia</i> (<i>Bairdia</i>) cf. <i>siliklensis</i> Rozhdestvenskaja, 1962 <p>(Pl. IV: Fig. 1)</p> <p> cf. 1962 <i>Bairdia siliklensis</i> nov. sp.; Rozhdestvenskaja: pl. 32, figs. 1–2.</p> <p> cf. 1985 <i>Bairdia</i> cf. <i>siliklensis</i> Rozhdestvenskaja; Coen: pl. 9, figs. 1–4.</p> <p> 2013 <i>Bairdia</i> (<i>Bairdia</i>) cf. <i>siliklensis</i> Rozhdestvenskaja; Maillet: 160, pl. XXIV, figs. 18–19. aff. 2013 <i>Bairdia</i> cf. <i>siliklensis</i> Rozhdestvenskaja; Maillet <i>et al.</i>: fig. 4R.</p> <p> aff. 2013 <i>Bairdia</i> cf. <i>siliklensis</i> Rozhdestvenskaja; Casier <i>in</i> Casier & Préat: 488, pl. V, fig. 9.</p> <p> <b>Material.</b> 11 specimens (7 C, 2 V, 2 F).</p> <p> <b>Description.</b> Large carapace, biconvex in dorsal view, suboval in lateral view. Pronounced overlap of the larger LV over the RV ventrally, posteriorly and especially dorsally. Overlap slighter in the antero-dorsal part. Bow-shaped projection in ventral view. Hmax at 2/5 anterior; Lmax slightly dorsal; Wmax slightly anterior. Dorsal margin of the larger LV slightly convex, both anteriorly and posteriorly oblique. Dorsal margin of the smaller RV straighter in its middle part and also both anteriorly and posteriorly oblique. Ventral margin of the larger LV slightly convex, more arched at its extremities. Ventral margin of the smaller RV slightly concave in its middle part and convex at its extremities. Middle part of the ventral and dorsal margins almost parallel. Well rounded, regularly convex anterior and posterior margins. Anterior and posterior margins forming an angle of about 130° respectively with the anterior part and the posterior part of the dorsal margin. Sharp posterior end. Anterior part of the carapace clearly higher than the posterior one. Surface smooth.</p> <p> <b>Discussion.</b> These specimens are too badly preserved to be identified at a species level without doubt. However, size, global outline and features of the carapace well remind <i>B. siliklensis</i> Rozhdestvenskaja, 1962. This species, whose features are a short hinge line, a pronounced overlap and a regular convexity of the dorsal margin, is sometimes confused in literature with <i>B. plicatula</i> Polenova, 1952. Mural pores have not been observed on the carapaces of our specimens due to bad preservation.</p> <p> <b>Occurrences.</b> Middle Givetian (Candás Fm, mbs A, B and C), Asturias (Peran-Perlora section).</p> <p> <b>PLATE IV. Ostracods from the type-area of the carbonate Candás Formation.</b> For samples stratigraphic position, see Figure 3. <b>1</b>. <i>Bairdia</i> (<i>Bairdia</i>) cf. <i>siliklensis</i> Rozhdestvenskaja, 1962, A9, RV (C. O.F.L.S. 1063); <b>2.</b> <i>Bairdia</i> (<i>Bairdia</i>) sp. P1, O 5, RV (C. O.F.L.S. 1067); <b>3.</b> <i>Bairdia</i> (<i>Bairdia</i>) sp. P2, II1, RV (C. O.F.L.S. 1068); <b>4.</b> <i>Bairdia</i> (<i>Bairdia</i>) sp. P3, A9, LV (C. O.F.L.S. 1069); <b>5.</b> <i>Bairdia</i> (<i>Bairdia</i>) sp. P4, A9, RV (C. O.F.L.S. 1070); <b>6.</b> <i>Bairdia</i> (<i>Cryptobairdia</i>) cf. <i>singularis</i> Krömmelbein, 1954, B10, RV (C. O.F.L.S. 1074); <b>7–8.</b> <i>Bairdia</i> (<i>Rectobairdia</i>) <i>paffrathensis</i> Kummerow, 1953, juvenile (7), B10, RV (C. O.F.L.S. 1082); adult (8), I6, RV (C. O.F.L.S. 1083); <b>9.</b> <i>Bairdia</i> (<i>Rectobairdia</i>) sp. P5, N2, RV (C. O.F.L.S. 1087); <b>10.</b> <i>Bairdiacypris antiqua</i> (Pokorńy, 1951), G1, RV (C. O.F.L.S. 1096); <b>11.</b> <i>Bairdiacypris</i> sp. P1, P6, RV (C. O.F.L.S. 1099); <b>12.</b> <i>Orthocypris</i> cf. <i>cicatricosa</i> Coen, 1985, Q8, RV (C. O.F.L.S. 1105); <b>13.</b> <i>Orthocypris</i> ? sp. indet. A, Q8, RV? (C. O.F.L.S. 1109).</p>Published as part of <i>Maillet, Sebastien, Milhau, Bruno, Vreulx, Michel & Posada, Luis-Carlos Sánchez De, 2016, Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications, pp. 1-78 in Zootaxa 4068 (1)</i> on pages 51-52, DOI: 10.11646/zootaxa.4068.1.1, <a href="http://zenodo.org/record/270644">http://zenodo.org/record/270644</a&gt

Bairdia

<i>Bairdia (Bairdia)</i> sp. P3 <p>(Pl. IV: Fig. 4)</p> <p> 2013 <i>Bairdia</i> (<i>Bairdia</i>) sp. P3; Maillet: 161, pl. XXV, fig. 7.</p> <p> <b>Material.</b> 3 specimens (2 C, 1 F).</p> <p> <b>Description.</b> Large elongated carapace, subtrapezoidal to subhexagonal in lateral view, biconvex in dorsal view. Overlap of the larger LV over the RV pronounced at least dorsally and slight ventrally. Bow-shaped projection in ventral view. Hmax at 1/3 posterior; Lmax at 1/3 dorsal; Wmax postero-dorsal. Dorsal margin regularly convex from posterior end to antero-ventral part and becoming slightly concave up to the anterior end. Ventral margin straight in its middle part, becoming convex at its extremities. Dorsal and ventral margins converging both posteriorly and anteriorly. Anterior margin slightly concave in its dorsal part to the Lmax point and, from this point, regularly convex in its ventral part. Anterior end forming an angle of about 120°. Carapace flattened along the anterior margin. Posterior margin convex, highly arched in its middle part, thus forming the posterior end of the carapace. Anterior part of the carapace wider than the posterior one. Surface smooth.</p> <p> <b>Discussion.</b> These large <i>Bairdia</i> may remind <i>B. siliklensis</i> Rozhdestvenskaja, 1962 by the general outline of the carapace. However, specimens are incomplete and not well enough preserved.</p> <p> <b>Occurrences.</b> Givetian (Candás Fm, mb A), Asturias (Peran-Perlora section).</p>Published as part of <i>Maillet, Sebastien, Milhau, Bruno, Vreulx, Michel & Posada, Luis-Carlos Sánchez De, 2016, Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications, pp. 1-78 in Zootaxa 4068 (1)</i> on page 53, DOI: 10.11646/zootaxa.4068.1.1, <a href="http://zenodo.org/record/270644">http://zenodo.org/record/270644</a&gt

Knoxiella

<i>Knoxiella</i> ? sp. P1 <p>(Pl. II: Fig. 11)</p> <p> cf. 1982 <i>Knoxiella</i> sp. 1; Milhau: 20, pl. 3, figs. 49–50. cf. <i>1983aKnoxiella</i> sp. 1; Milhau: 351.</p> <p> cf. 1983b <i>Knoxiella</i> sp. 1; Milhau: 221, 228–229, pl. 10, fig. 32. cf. 1988 <i>Knoxiella</i> sp. 1 Milhau; Milhau: 486, pl. 55, fig. 15. 2013 <i>Knoxiella</i> ? sp. P1; Maillet: 91, pl. XI, fig. 14.</p> <p> <b>Material.</b> 1 specimen (1 V).</p> <p> <b>Description.</b> Medium-sized sub-oval carapace with straight dorsal margin. Hmax at 1/3 anterior; Lmax at 2/5 dorsal; Wmax at 1/3 anterior. Slightly convex ventral margin, posteriorly oblique. Ventral and dorsal margins almost parallel. Well rounded anterior and posterior margins, convex. Anterior part higher than posterior part. Flattened margins on the whole outline of the carapace. Overlap of the valves unknown. Surface smooth. Marked “V”-shaped adductorial sulcus slightly anterior and extending from dorsal margin to the centre of the valves. Preadductorial node is well visible.</p> <p> <b>Discussion.</b> This single depleted-ornamentation specimen reminds of <i>Knoxiella</i> sp. 1 reported by Milhau (1982, 1983a, b, 1988) in the Ardenne and the Boulonnais.</p> <p> <b>Occurrence.</b> Middle Givetian (Candás Fm, mb B), Asturias (Peran-Perlora section).</p>Published as part of <i>Maillet, Sebastien, Milhau, Bruno, Vreulx, Michel & Posada, Luis-Carlos Sánchez De, 2016, Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications, pp. 1-78 in Zootaxa 4068 (1)</i> on page 31, DOI: 10.11646/zootaxa.4068.1.1, <a href="http://zenodo.org/record/270644">http://zenodo.org/record/270644</a&gt

Podocopida

Podocopina indet. P1 <p>(Pl. III: Fig. 9)</p> <p>2013 Podocopina indet. P1; Maillet: 134, pl. XVIII, fig. 5.</p> <p> <b>Material.</b> 2 specimens (2 C).</p> <p> <b>Description.</b> Medium-sized elongated carapace, oval outline in lateral view, biconvex in dorsal view. Overlap of the larger LV over the RV slight antero-dorsally and more pronounced ventrally with a bow-shaped projection. Hmax at 1/3 anterior; Lmax median; Wmax median. Straight dorsal margin, slightly oblique posteriorly. Straight ventral margin. Ventral and dorsal margins slightly converging posteriorly. Anterior and posterior margins well rounded and regularly convex. Anterior part of the carapace slightly higher than posterior one. Surface smooth.</p> <p> <b>Discussion.</b> These specimens are assigned to Podocopina because of the bow-shaped projection in ventral view. However, their carapaces are not preserved well enough to allow a more precise identification.</p> <p> <b>Occurrences.</b> Middle Givetian (Candás Fm, mbs A and C), Asturias (Peran-Perlora section).</p>Published as part of <i>Maillet, Sebastien, Milhau, Bruno, Vreulx, Michel & Posada, Luis-Carlos Sánchez De, 2016, Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications, pp. 1-78 in Zootaxa 4068 (1)</i> on page 46, DOI: 10.11646/zootaxa.4068.1.1, <a href="http://zenodo.org/record/270644">http://zenodo.org/record/270644</a&gt

Punctoprimitia

Punctoprimitia ? sp. indet. 2013 Punctoprimitia ? sp. indet.; Maillet: 82. Material. 2 specimens (2 V). Description. Medium-sized preplete and inflated carapace. Overlap not observed. Hmax slightly anterior; Lmax almost median; Wmax almost median. Straight dorsal margin and straight hinge line. Well rounded free margins, regularly convex. Anterior part of the carapace wider than the posterior one. Mid-dorsal adductorial sulcus. Surface smooth (?). Discussion. Two badly preserved specimens, assigned with doubt to the genus Punctoprimitia. Occurrence. Upper Givetian (Candás Fm, mb D), Asturias (Peran-Perlora section).Published as part of Maillet, Sebastien, Milhau, Bruno, Vreulx, Michel & Posada, Luis-Carlos Sánchez De, 2016, Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications, pp. 1-78 in Zootaxa 4068 (1) on page 27, DOI: 10.11646/zootaxa.4068.1.1, http://zenodo.org/record/27064

Bairdiacypris antiqua Pokorny 1951

<i>Bairdiacypris antiqua</i> (Pokorńy, 1951) <p>(Pl. IV: Fig. 10)</p> <p> 1951 <i>Fabalicypris antiqua</i> nov. sp.; Pokorńy: 611–612, text-figs. 4–7, pl. 5, fig. 14. <i>1960</i> Fabalicypris? <i>antiqua</i> Pokorńy; Sohn: 62.</p> <p> 1965a <i>Fabalicypris antiqua</i> Pokorńy; Becker: 421–422, pl. 33, fig. 7.</p> <p> ? 1969 <i>Fabalicypris</i> ? cf. <i>holoschurmensis</i> (Polenova, 1955); Groos: 74–75, pl. 16, fig. 7. 1982 <i>Bairdiacypris</i> sp. 2; Milhau: 20, pl. 3, figs. 69–70.</p> <p> 1992 <i>Fabalicypris</i> ? <i>antiqua</i> Pokorńy; Casier <i>in</i> Casier <i>et al.</i>: 77, 86, pl. 2, figs. 17–18. 1993 <i>Fabalicypris</i> ? <i>antiqua</i> Pokorńy; Kasimi: pl. 17, figs. 29–30.</p> <p> 1995 <i>Bairdiacypris antiqua</i> (Pokorńy); Casier <i>in</i> Casier <i>et al.</i>: 494, pl. 64, fig. 17.? 1997 <i>Bairdiacypris</i> sp. A; Casier <i>et al.</i>: 156, 158, pl. 3, fig. 6.</p> <p> 2010 <i>Bairdiacypris</i> sp. A; Maillet: 40, pl. 1, fig. 21.</p> <p> 2011a <i>Bairdiacypris antiqua</i> (Pokorńy); Casier <i>in</i> Casier <i>et al.</i>: 3, fig. 17. <i>2011</i> bBairdiacypris antiqua (Pokorńy); Casier <i>in</i> Casier <i>et al.</i>: 114.</p> <p> 2013 <i>Bairdiacypris antiqua</i> (Pokorńy); Maillet: 167, pl. XXVI, figs. 11–14. 2013 b <i>Bairdiacypris</i> sp. A; Maillet <i>et al.</i>, fig. 4X.</p> <p> 2013 <i>Bairdiacypris antiqua</i> (Pokorńy); Casier & Maillet <i>in</i> Casier <i>et al.</i>: 254, 264, fig. 10D. 2013 <i>Bairdiacypris antiqua</i> (Pokorńy); Casier <i>in</i> Casier & Préat: 488, pl. V, fig. 11.</p> <p> <b>Material.</b> 2 specimens (1 C, 1 F).</p> <p> <b>Diagnosis.</b> Pokorńy (1951, p. 611).</p> <p> <b>Description.</b> Large elongated carapace, bean-shaped in lateral view, biconvex in dorsal view. Overlap of the larger LV over the RV along the whole outline. Bow-shaped projection in ventral view. Hmax at 2/5 anterior; Lmax at 1/3 ventral; Wmax median. Regularly convex dorsal margin, more arched in its posterior part. Clearly concave ventral margin. Ventral and dorsal margins almost parallel (carapace slightly slender posteriorly). Convex anterior margin, more arched in its dorsal part than in its ventral part. Regularly convex posterior margin. Anterior and posterior ends of the carapace well rounded. Anterior end of the carapace higher than the posterior one. Anterior part of the carapace higher than posterior one. Surface smooth.</p> <p> <b>Discussion.</b> A very common species in Givetian deposits of Europe. The collected specimens show juveniles whose outline is different from adults, with a narrower posterior part. The high variability of the species described by Żbikowska (1983) was present in our material, with sometimes a more elongated or higher carapace, a more convex dorsal margin or a straighter ventral margin, a more or less arched carapace, and an anterior part more or less wide.</p> <p> <b>Occurrences.</b> Lower to Upper Givetian (Hanonet, Trois-Fontaines, Terres d’Haurs, Mont d’Haurs Fms, and Fromelennes Fm, Flohimont and Moulin Boreux Mbs), Ardenne (Flohimont, Couvin, Jemelle, Glageon, Sourd d’Ave, Mont d’Haurs, Cul d’Houille and Aisne sections), Middle Givetian to Lower Frasnian (Candás Fm, mb B), Asturias (Peran-Perlora section); Givetian, Eifel; Middle Devonian, Bohemia, USA.</p>Published as part of <i>Maillet, Sebastien, Milhau, Bruno, Vreulx, Michel & Posada, Luis-Carlos Sánchez De, 2016, Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications, pp. 1-78 in Zootaxa 4068 (1)</i> on pages 56-57, DOI: 10.11646/zootaxa.4068.1.1, <a href="http://zenodo.org/record/270644">http://zenodo.org/record/270644</a&gt

Bairdia

<i>Bairdia</i> ? sp. <p> 2013 <i>Bairdia</i> ? (<i>?</i>) sp.; Maillet: 167, pl. XXVI, fig. 10.</p> <p> <b>Material.</b> 1 specimen (1 C).</p> <p> <b>Description.</b> Medium-sized elongated carapace, flattened and biconvex in dorsal view. Overlap of the larger LV over the RV along the whole outline. Hmax slightly anterior; Lmax slightly ventral; Wmax slightly anterior. Dorsal margin convex. Ventral margin very slightly convex. Anterior and posterior margins well rounded. Surface smooth.</p> <p> <b>Discussion.</b> General morphology of this single badly preserved specimen could also remind of the <i>Bairdiocypris</i> genus.</p> <p> <b>Occurrences.</b> Upper Givetian (Candás Fm, mb D), Asturias (Peran-Perlora section).</p>Published as part of <i>Maillet, Sebastien, Milhau, Bruno, Vreulx, Michel & Posada, Luis-Carlos Sánchez De, 2016, Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications, pp. 1-78 in Zootaxa 4068 (1)</i> on page 56, DOI: 10.11646/zootaxa.4068.1.1, <a href="http://zenodo.org/record/270644">http://zenodo.org/record/270644</a&gt

Quasillites (Jennillites) ambiguus Becker 1989

<i>Quasillites (Jennillites) ambiguus</i> Becker, 1989 <p>(Pl. III: Figs. 5 & 6)</p> <p> <i>1980 Jenningsina</i> sp.; Becker: 764.</p> <p> 1985 <i>Punctomosea</i> sp. B; Casier: 836–837, pl. 1, figs. 13–14.</p> <p> 1989 <i>Quasillites</i> (<i>Jennillites</i>) <i>ambiguus</i> nov. sp.; Becker: 148, pl. 5, figs. 6–7. 1996 Gen. indet. sp. B (<i>Guerichiella</i> ?); Milhau: 74–75, pl. 2, fig. 13.</p> <p> <i>1996 Punctomosea</i> sp. B Casier; Milhau: 74–75.</p> <p> 2004 <i>Quasillites</i> (<i>Jennillites</i>) <i>ambiguus</i> Becker; Becker <i>in</i> Becker <i>et al.</i>: 53, pl. 4, fig. 8, pl. 5, figs. 1, 10, 14. 2010a <i>Quasillites</i> (<i>Jennillites</i>) <i>ambiguus</i> Becker; Casier <i>in</i> Casier <i>et al.</i>: 43, pl. 3, fig. 18. 2013 <i>Quasillites</i> (<i>Jennillites</i>) <i>ambiguus</i> Becker; Maillet: 126, pl. XVI, figs. 23–25. 2013a <i>Quasillites</i> (<i>Jennillites</i>) <i>ambiguus</i> Becker; Maillet <i>et al.</i>: pl. 1, fig. 16.</p> <p> <b>Material.</b> 13 specimens (3 C, 10 V).</p> <p> <b>Diagnosis.</b> Becker (1989, p. 148).</p> <p> <b>Description.</b> Medium-sized elongated carapace, sub-rectangular in lateral view. Slight dorsal overlap of the LV over the smaller RV at free margins of the carapace. Hmax median; Lmax at 1/3 dorsal; Wmax slightly dorsal. Almost straight to very slightly convex dorsal margin. Slightly convex ventral margin. Ventral and dorsal margins almost parallel. Regularly convex anterior margin. Posterior margin very arched in the dorsal part, oblique anteriorly in the ventral part. Anterior part of the carapace slightly higher than the posterior one. Surface finely reticulated. Reticles orientated longitudinally. Marked vertical ridge in the posterior part of the carapace, possibly prolonged by spines. Carapace globally inflated, except a clear flattening in the postero-dorsal part posteriorly to the vertical ridge.</p> <p> <b>Discussion.</b> The elongation of the carapace, its fine reticulation and the very marked vertical ridge in its posterior part are features of this species, both in juveniles and adults.</p> <p> <b>Occurrences.</b> Upper Emsian to Middle Givetian (Chefar el Ahmar Fm), Saoura (Km 30 section), Middle Givetian (Candás Fm, mbs A and B), Asturias (Peran-Perlora section) and Palencia, Middle/Upper Givetian, Mouthoumet Massif (Berco Petito section); Givetian, Ardenne and Morocco.</p>Published as part of <i>Maillet, Sebastien, Milhau, Bruno, Vreulx, Michel & Posada, Luis-Carlos Sánchez De, 2016, Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications, pp. 1-78 in Zootaxa 4068 (1)</i> on pages 44-45, DOI: 10.11646/zootaxa.4068.1.1, <a href="http://zenodo.org/record/270644">http://zenodo.org/record/270644</a&gt