NDLI: Bioerosión en erizos irregulares (Clypeasteroidea) del Mioceno Superior en el sector suroccidental de la cuenca del Guadalquivir (provincia de Sevilla)

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Bioerosión en erizos irregulares (Clypeasteroidea) del Mioceno Superior en el sector suroccidental de la cuenca del Guadalquivir (provincia de Sevilla)

Content Provider	Semantic Scholar
Author	Alfaro, Eduardo Jesús Mayoral Santos, Ana Carolina Marion Bajo, Ildefonso Adriaensens, Olga Guinea, Fernando Muñiz
Copyright Year	2003
Abstract	Bioerosive structures recorded on several species of echinoids of the Order Clypeasteroidea have been studied. These species are Clypeaster cermenatii Checchia-Rispoli, 1925, C. marginatus Lamarck, 1816, C. portentosus Desmoulins, 1837, C. brevior Seguenza, 1879, C. aichinoi Checchia-Rispoli, 1925, C. tauricus Desor, 1858, C. franchii Checchia-Rispoli, 1925, C. altus Klein, 1734 and Clypeaster sp., all of them from the northern border of the Guadalquivir Basin between Penaflor and Alcolea del Rio (Sevilla province), belonging to Upper Miocene (Late Tortonian) in age. Evidences of predation behavior showing search for food (borings, breakings and/or test deepening), and domicile are analyzed. The ichnotaxa Oichnus simplex Bromley, 1981 and Oichnus ichnosp. indet. and significant test breakings produced by sharp incisions or bitting predation are included inside the first category. Usually, reparation evidences are observed, consisting in cementation of calcareous fragments and secretions of secondary test material resulting in spectacular teratologic growths. These records point to predators related probably to cassid gastropods, as several crustaceans, echinoderms and fishes. In the second category are included the icnotaxa Gastrochaenolites cf. digujus Kelley and Bromley, 1984 and Maeandropolydora sulcans Voigt, 1965, representing the activity of lithophagous bivalves and polychaeta annelids, respectively.
Starting Page	131
Ending Page	141
Page Count	11
File Format	PDF HTM / HTML
Volume Number	18
Alternate Webpage(s)	http://www.sepaleontologia.es/revista/anteriores/REP%20(2003)%20vol.%2018/2/01.%20Santos%20et%20al.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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