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Ammonites Del Oxfordense Superior Y Kimmeridgense De La Sierra De Crevillente (Alicante)

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Ammonites Del Oxfordense Superior Y Kimmeridgense De La Sierra De Crevillente (Alicante) Boletín Geológico y Minero. T. LXXXVII-V. Año 1976 (462-479) GEOLOGÍA Ammonites del Oxfordense Superior y Kimmeridgense de la Sierra de Crevillente (Alicante) Por JOSÉ LILLO BEVIA (*) RESUMEN Se presenta un estudio sistemático de las especies de Ammonites recolectados en la cabecera de la Rambla de Amorós, en la vertiente meridicional de la Sierra de Crevillente, fauna que ha datado y zonado el Oxfordense Superior y Kimmeridgense. SOMMAIRE On montre ici un étude systhématique des espéces d'Ammonites recueillies tout prés de la naissance du ravin d'Amorós, dans la versant Sud de la Sierra de Crevillente, faune qui a daté et permis la zonation de l'Oxfor- dien Supérieur et du Kimmeridgien. La fauna que aquí se describe y figura desde un 18A ha datado el techo del Oxfordense medio, punto de vista sistemático ha sido recolectada cer­ zona de Transversarium, el Oxfordense Superior ca del Estret Roig, en la cabecera de la Rambla de completo (Zonas de Bifurcatum, Mimammatum y Amorós, y cerca del camino de herradura que une Planulá), estando muy bien representada la fauna de los pueblos de Crevillente y Hondón de los Frailes, la zona de Bimammatum, con sus subzonas; Hip- atravesando la Sierra. selum, Bimammatum y Hauffianum. Todas las zo­ Los datos estratigráficos han sido ya descritos en nas mencionadas se encuentran condensadas en un LILLO, J.; MANERA, C; COLMENERO, J. R.: "Con­ pequeño espesor de sedimentos, que ofrece, sin tribución al conocimiento geológico de la Sierra embargo, una representación faunística típica de de Crevillente y sus alrededores (Alicante). Estu­ todas las zonas mencionadas. dios geológicos; 30: 253-269. El yacimiento 19A, continuación estratigráfica de Los dos autores arriba mencionados contribuye­ los anteriores, ha zonado el Kimmeridgense desde ron al estudio de campo y a la recolección y pre­ la base, en sus zonas de Platinota, Hipselocyclum, parado de los ejemplares cuyo estudio sistemático Divisum y Acanthicum. Toda la fauna se da en rit- se emprende aquí, por lo que les reitero mi agra­ mitas calcomargosas de tonos grises, azulados, con decimiento en su colaboración en estas páginas. algunas intercalaciones de tonos vinosos. Desde la En resumen, la fauna de los yacimientos 17A y zona de Acanthicum existe una continuidad sedi­ mentaria hasta el Portlandense, pero azoica desde (*) Catedrático del Instituto Nacional de E. Media el punto de vista macropaleontológico. "Sorolla". Calle Maderas, s. n. Valencia-11. 10 AMMONITES DEL OXFORDENSE SUPERIOR Y KIMMERIDGENSE V-463 DESCRIPCIONES SISTEMÁTICAS 1878. Neumayria trachynota (OPP). BAYLE, Car. Geol. Fr. 4; L-92; F-l. Suborden: Ammonitina HYATT, 1889. v. 1887. Ammonites Flexuosos costatus. Qu., Superfamilia: Haplocerataceae ZIITEL, 1884. Amm. L-97; F-8, 9, 11, 12, 16; L-99, F- Familia: Oppelidae BONARELLI, 1894. 24, 26, 28, 29. Subfamilia: Taramelliceratinae SPATH, 1928. 1911. Oppelia flexuosa costata OPP. - WEPFER, Género: Taramelliceras DEL CAMPANA, 1904. Gatt. Opp. L-2; F-l. v. 1929. Oppelia costata Qu. - WEGELE, Oberoxf. T. (Taramelliceras) trachynotum (OPPEL.), 1863. Unterkr, L-26; F-4,5. (Lám. II; fig. 5-6). v. 1929. Oppelia trachynota OPP. - WEGELE, L-26; 1863. Ammonites trachynotus OPP. OPPEL, p. 214; F-9. L-56; F-4. 1955. T. (Taramelliceras) costatum (Qu.) forma 1877. Ammonites trachynotus OPP. FAVRE, p. 34; aurita HOLDER, 1955, Gatt. Taram. L-17; L-3; F-2. F-ll. 1897. Neumayria trachynota OPP. CHOFFAT, p. 24; L-17; F-l-4. Descripción: Un fragmento en el que puede ob­ 1930. Neumayria trachynota (OPP). DORN, p. 52; servarse una fila de tubérculos sifonales, espacia­ L-30; F-2a 2b, 4. dos regularmente, rodeados por dos filas de tu­ 1938. Taramelliceras trachynotus OPPEL - ROMÁN, bérculos grandes, situados en las terminaciones de p. 165; F-159. las costillas. Las costillas son flexuosas y ramifica­ 1955. T. (Taramelliceras) trachynotus (OPP.)-HOL- das, partiendo del ombligo la mayoría, y ramificán­ DER, Gatt. Taramell., p. 102; Taf. 18; F-21. dose en otras posteriormente. D H E 0 72 39,6,(0,55) — 9(0,12) HOLDER, 1955, da figuración de T. costatum en varias láminas (Lám. 17, Lám. 18; F-17, 18), pero Descripción: Quilla reemplazada por tubérculos mi ejemplar es referible a la forma (T.) costatum sifonales. A ambos lados de los tubérculos sifona- (Qu.) forma aurita. HOLDER, 1955, según su L, 17; les existen unos tubérculos de gran tamaño y regu­ F-ll. larmente espaciados, que nos dan los caracteres de OPPEL y los de la figuración de HOLDER, 1955. Yacimientos: El ejemplar procede de los niveles La concha es de ombligo estrecho, y de vueltas a rojos de la Rambla de Amorós (S. de Crevillente- de relativa elevación, bastante espesas, con flancos Alicante). Oxfordiense Superior - Kimmeridg. me­ convexos y región externa redondeada. dio. Los flancos están adornados de costillas flexuo- sas, de las cuales la parte umbilical se destaca bien y se destaca hacia adelante. La parte externa de las T. (Taramelliceras) pseudoflexuosum (FAVRE) costillas está inflexionada hacia atrás. Algunas cos­ Lám. I; fig. 1-2). tillas llevan tubérculos externos a menudo alar­ 1877. Ammonites (Oppelia) pseudoflexuosus E. gados. FAVRE, Amm. Acanth., L-2, F-9, 10; L-3, Yacimientos: Flysch Kimmeridgiense, niveles me­ F-l. a dios, de la Rambla de Amorós (S. de Crevillente- 1879. Oppelia holbeini OPPEL - FONTANNES, Crus- Alicante). sol, L-5; F-3. Taramelliceras costatum (QUENSTEDT), 1849. 1893. Neumayria pseudoflexuosa (E. FAVRE - CHOF­ (Lám. II; fig. 1-2). FAT, L16; F-5-17. v. 1849. Ammonites flexuosos costatus QUENS. 1934. Oppelia (Tar.) Holbeini OPPEL - DACQUE, Ceph. L-9, fig. 4. Leitfoss. Jura, L-32; F-ll. 11 V-464 JOSÉ LILLO BEVIA 1955. T. (Taramelliceras) pseudoflexuosum (FA­ T. (Tarmelliceras) bachianum (OPPEL), 1863. VRE) - HOLDER, Gat. Taram., p. 117, L-19; (Lám. I; fig. 7). F-23. v. 1863. Ammonites Bachianus OPPEL, Paláont. Lectotipo: FAVRE, 1877, L-3; F-l Mitt. L-55; F-5. D = 72 H/D = (0,48) 0=12 (0/D) = (0,16) 1866. Ammonites bachianus OPPEL, Z. Amm. Descripción: Ejemplar bastante aplanado, con tu­ Transversarius, p. 282. bérculos a mitad de los flancos y en el límite de la 1951. Taramelliceras cf. Bachi OPP. sp. JEAN- zona ventral, regularmente separados. Ombligo pe­ NET, Herznach. p. 95. queño. Costillas poco flexionadas, acabando las se­ 1955. T. (Taramelliceras) bachianum (OPPEL)-HOL- cundarias a mitad del flanco. DER, p. 84. Holotipo: original de OPPEL, 1863, Taf. 55; fig. 5. Yacimientos: Flysch Kimmeridgiense de la Ram­ 1 Recogido en la zona de Transversarium. bla de Amorós, niveles medios. S. Crevillente (Alicante). Descripción: Un fragmento muy desgastado de T. (Taramelliceras) rigidum (WEGELE), 1927. Sección de espira alta y región sifonal redondeada. (Lám. I; fig. 3-4). La zona más ancha está a un tercio de la región sifonal. Espira involuta de crecimiento rápido en v. 1829. Ammonites flexuosos QUENS., p. 917; altura. Ombligo pequeño y profundo de paredes ver­ L-99; F-21. ticales con el contorno perfectamente delimitado. v. 1929. Oppelia rígida n. sp. WEGELE, p. 123; 1- Presenta tubérculos dorsales desgastados, aunque 28; F-7. uno se conserva bien desarrollado. Puede referirse 1940. Oppelia rígida WEGELE, - DIETERICH, a la figuración de OPPEL, 1863. p, 29. 1955. T. (Metahaploceras) rigidum (WEGELE)- Yacimientos: Yacimiento 18A4 de la Rambla de HOLDER, p. 134, L-18; F-20. Amorós, S.a de Crevillente (Alicante). Holopito: WEGELE, 1929, L-28, F-2. D = 75 H/D=0,86) 0=14 0/D=0,30). T. (Taramelliceras) holbeini (OPPEL), 1862. (Lám. I; fig. 5-6). Descripción: Costillas regularmente espaciadas y algo flexuosas, que se encuentran poco señaladas 1862-63. Ammonites holbeini OPPEL, Paláontol. hacia la región umbilical, y que en la región ven­ Mitt., p. 1213. tral terminan en tubérculos pronunciados y redon­ 1870 Oppelia holbeini OPP. ZITTEL, Tithon. deados; regularmente espaciados, aumentando los p. 189. tubérculos de tamaño hacia la última cámara de 1873 Oppelia holbeini OPP. - NEUMAYR, Asp. habitación. Acanth., p. 166; pl. 33; F-l. Ombligo pequeño y espesor no medible, por no 1875 Oppelia holbeini OPP. FONTANNES, Z. Te- haber podido separar uno de los flancos de la cali­ nuil, p. 65. za empastante. 1887 Oppelia holbeini OPP. DE LORIOL, Z Te- Yacimientos: Flysch Kimmeridgiense de la Ram­ nuil, Badén, p. 37; pl. 111; F-6 y 7. bla de Amorós, niveles inferiores. Zona de Platy- 1877 Oppelia holbeini OPP. FAVRE, Z. Acanth. nota ENGEL, 1883. Alp. Suis., p. 31; pl. 11: F-ll, 12. LAMINA I sutura.—5. Taramelliceras cf. holbeini (OPPEL); vista 1. Taramelliceras pseudoflexuosum (FAVRE); vista fron­ frontal. Kimmeridgense Medio de la Rambla de Amo­ tal. Kimmeridgense Inferior, Rambla de Amorós (S.a de rós (S.a de Crevillente), 19A6.—6. Id. id. vista frontal.— Crevillente), 19A3.—2. Id. id. vista lateral y línea su­ 7.Taramelliceras bachianum (OPPEL); vista lateral. Ox­ tural.—3. Taramelliceras rigidum (WEGELE); vista dor­ fordense Superior de la Rambla de Amorós (S.a de Cre­ sal. Kimmeridgense Inferior de la Rambla de Amorós villente), 18A4.—8. Taramelliceras sp. Kimmeridgense (S.* de Crevillente), 19A4.—4. Id. id. vista lateral y Superior de la Rambla de Amorós 12 V-466 JOSÉ LILLO BEVIA 1879 Oppelia holbeini OPP. - FONTANNES, Cru- Superfamilia: PERISPHINCTACEAE STEINMANN, 1890. sol, p. 37; L-5; F-3. Familia: Perisphinctidae STEINMANN, 1890. 1938 Taramelliceras holbeini OPP. ROMÁN, Les Subfamilia: Perisphinctinae STEINMANN, 1890. Amm., p. 167. Género: Perisphinctes WAAGEN, 1869. D H/D E/D 0 0/D 115 (0,58) (0,30) 10,6 (0,09) Perisphinctes tarraconensis FALLOT & BLANCHET, 107 0,50) 19 0,17) 1923. (Lám. V, fig. 6). Descripción: Los individuos j'óvenes de esta espe­ 1923. Perisphinctes tarraconensis FALLOT & BLAN­ cie no se distinguen de los de Taramelliceras comp- CHET, P. 28. Pl. VI, F-4; Pl. IX, F-l, 2. sum OPP.
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