Roveacrínidos (Crinoidea: Roveacrinida) del Cenomaniano tardío al Turoniano temprano de Cerritos, oeste de la Plataforma Valles-San Luis Potosí, México
作者： Lourdes Omaña Pulido , Blanca Estela Buitrón Sánchez
关键词: Geology 、 Sea level 、 Baltica 、 Bloom 、 UNSTABLE ENVIRONMENT 、 Cenomanian 、 Paleontology 、 Primary productivity
摘要: Fragments of roveacrinid crinoids the upper Cenomanian-lower Turonian from Soyatal Formation located in western part Valles-San Luis Potosi Platform, Mexico, were studied. Roveacrinid fossils consist small pieces cup and brachials observed thin sections that identified with species Roveacrinus geinitzi Schneider 1989, Poecilocrinus dispandus elongatus Peck 1943 sp. The Roveacrinids are opportunist organisms developed during changes sea level. roveacrinids associated a calcispherids bloom r r-k strategy planktonic foraminifers, such as Muricohedbergella delrioensis (Carsey), M. planispira (Tappan), Heterohelix moremani (Cushman), reussi Whiteinella archaeocretacea Pessagno, W. aprica (Loeblich & Tappan), brittonensis &Tappan), baltica Douglas Rankin, paradubia (Sigal), which considered indicators high primary productivity an unstable environment took place flooding Platform Cenomanian/Turonian boundary.
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