XII Congreso Nacional de Paleontología Puebla de los Ángeles, Puebla, 22-25 de febrero 2011

Table of contents
Bol. Soc. Geol. Mex vol.63 n.3 Ciudad de México Dec. 2011

Articles
	·  Rediscovery of type material in the collection of the "Gustavo Orcés V." Museum of Natural History of the Institute of Biological Sciences, National Polytechnic School, Quito, Ecuador Montellano-Ballesteros, Marisol; Román-Carrión, José Luis         · abstract in English | Spanish     · text in Spanish     · Spanish ( pdf )
	·  Presence of a maniraptoriform dinosaur in the Late Cretaceous (Maastrichtian) of Chiapas, southern Mexico Carbot-Chanona, Gerardo; Rivera-Sylva, Héctor E.         · abstract in English | Spanish     · text in English     · English ( pdf )
	·  Geochemical analyses (major, minor and trace elements, δ18O, and rare earths) of selected microbialites from the San Casiano Formation (Upper Triassic, NE Italy) Sánchez-Beristain, Francisco; López-Esquivel Kranksith, Laura         · abstract in English | Spanish     · text in Spanish     · Spanish ( pdf )
	·  Scientific collections and protection of paleontologic patrimony Cristín, Alejandro; Perrilliat, María del Carmen         · abstract in English | Spanish     · text in Spanish     · Spanish ( pdf )
	·  Carboniferous columnar crinoid plates in the Santiago Ixtaltepec region, Nochixtlán municipality, Oaxaca; stratigraphic and paleobiogeographic considerations Villanueva-Olea, Rafael; Castillo-Espinoza, Karla María; Sour-Tovar, Francisco; Quiroz-Barroso, Sara Alicia; Buitrón-Sánchez, Blanca E.         · abstract in English | Spanish     · text in Spanish     · Spanish ( pdf )
	·  Distribution and abundance of thanatocenosis in benthonic foraminifera of the Colorado River delta Santa Rosa-del Río, Miguel Ángel; Ávila Serrano, Guillermo Eliezer; Téllez-Duarte, Miguel Agustín; Gonzalez-Yajimovich, Oscar; Cupul Magaña, Luis Antonio         · abstract in English | Spanish     · text in Spanish     · Spanish ( pdf )
	·  The first mandible fragment of Deinosuchus (Eusuchia: Alligatoroidea) discovered in Coahuila, Mexico Rivera-Sylva, Héctor E.; Frey, Eberhard         · abstract in English | Spanish     · text in English     · English ( pdf )
Regular articles
	·  Importance of urban hydrogeology; key science for sustainable urban development Dávila Pórcel, René Alberto; Gómez, Héctor de León         · abstract in English | Spanish     · text in Spanish     · Spanish ( pdf )
	·  Organic amendments and a vegetal species for a hard layer enhancement (duripan-type tepetate) Flores-Román, David; Muñiz-Irigoyen, Carla Guadalupe; Galicia-Palacios, María del Socorro; Ferrera-Cerrato, Ronald; Zenteno, Gerardo         · abstract in English | Spanish     · text in Spanish     · Spanish ( pdf )
	·  Geological and aeromagnetic analysis of anomalous Fe contents in the San Jerónimo pluton in the Peninsular Batholithic Belt, Baja California, Mexico Torres Carrillo, Xóchitl G.; Delgado Argote, Luis A.; Espinosa Cardeña, Juan M.; Romo Jones, José M.         · abstract in English | Spanish     · text in Spanish     · Spanish ( pdf )
Book review
	·  Paleontology of invertebrates Sour-Tovar, Francisco         · text in Spanish     · Spanish ( pdf )