TY - JOUR AU - Buitrón Sánchez, Blanca Estela AU - Omaña Pulido, Lourdes PY - 2015/06/01 Y2 - 2024/03/28 TI - Roveacrinids (Crinoidea: Roveacrinida) from the late Cenomanian to early Turonian from Cerritos, western Valles-San Luis Potosí Platform, Mexico. JF - Revista de Biología Tropical JA - Rev. Biol. Trop. VL - 63 IS - S2 SE - Articles DO - 10.15517/rbt.v63i2.23125 UR - https://revistas.ucr.ac.cr/index.php/rbt/article/view/23125 SP - 17–25 AB - <p>Fragments of roveacrinid crinoids of the upper Cenomanian-lower Turonian from Soyatal Formation located in the western part of the Valles-San Luis Potosí Platform, Mexico, were studied. Roveacrinid fossils consist of small pieces of cup and brachials observed in thin sections that were identified with the species <em>Roveacrinus geinitzi</em> Schneider<em> </em>1989, <em>Poecilocrinus dispandus elongatus </em>Peck 1943 and <em>Roveacrinus</em> sp. The Roveacrinids are opportunist organisms that developed during changes of sea level. The roveacrinids are associated with a calcispherids bloom and r and r-k strategy planktonic foraminifers, such as <em>Muricohedbergella delrioensis</em> (Carsey), <em>M. planispira</em> (Tappan), <em>Heterohelix moremani</em> (Cushman), <em>Heterohelix reussi</em> (Cushman), <em>Whiteinella archaeocretacea</em> Pessagno, <em>W. aprica</em> (Loeblich &amp; Tappan), <em>W. brittonensis</em> (Loeblich &amp;Tappan), <em>W. baltica </em>Douglas &amp; Rankin, and <em>W. paradubia</em> (Sigal), which are considered as indicators of high primary productivity in an unstable environment that took place during the flooding of the Valles-San Luis Potosí Platform in the Cenomanian/Turonian boundary.</p><div> </div> ER -