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Boletín de la Sociedad Geológica Mexicana ISSN: 1405-3322 Sociedad Geológica Mexicana, A.C. Omaña, Lourdes; López-Doncel, Rubén; Torres, José Ramón; Alencaster, Gloria; López-Caballero, Iriliana Mid-late Cenomanian larger benthic foraminifers from the El Abra Formation W Valles-San Luis Potosi Platform, central-eastern Mexico: Taxonomy, biostratigraphy and paleoenvironmental implications Boletín de la Sociedad Geológica Mexicana, vol. 71, no. 3, 2019, September-December, pp. 691-725 Sociedad Geológica Mexicana, A.C. DOI: https://doi.org/10.18268/BSGM2019v71n3a5 Available in: https://www.redalyc.org/articulo.oa?id=94366148005 How to cite Complete issue Scientific Information System Redalyc More information about this article Network of Scientific Journals from Latin America and the Caribbean, Spain and Journal's webpage in redalyc.org Portugal Project academic non-profit, developed under the open access initiative Boletín de la Sociedad Geológica Mexicana / 2019 / 691 Mid–late Cenomanian larger benthic foraminifers from the El Abra Formation W Valles-San Luis Potosi Platform, central–eastern Mexico: Taxonomy, biostratigraphy and paleoenvironmental implications Lourdes Omaña, Rubén López-Doncel, José Ramón Torres, Gloria Alencaster, Iriliana López-Caballero ABSTRACT Lourdes Omaña ABSTRACT RESUMEN Gloria Alencaster lomanya@geología.unam.mx The Valles–San Luis Potosí Platform is La Plataforma Valles–San Luis Potosí es parte de Departamento de Paleontologia, Instituto de part of an extensive carbonate platform un sistema de plataformas extenso que se encon- Geologia, Universidad Nacional Autonoma system that rimmed the ancestral Gulf traba bordeando el antiguo Golfo de México en el de Mexico, Ciudad Universitaria, Coyoacan, of Mexico during the middle (Albian) Albiano hasta el Cretácico Superior. La caliza El 04510, CDMX, Mexico. through Upper Cretaceous. The El Abra Abra es un depósito de aguas poco profundas; ésta Formation consists of a shallow-water contiene un conjunto de foraminíferos bentónicos Rubén López-Doncel deposit; it contains a benthic foramin- que incluye 18 especies, que se describen e ilustran José Ramón Torres iferal assemblage that includes 18 species, en este documento. Las sucesiones estudiadas de Instituto de Geologia, Universidad Autonoma which are described and illustrated in this la parte superior de la Formación de El Abra de San Luis Potosi, Av. Dr. Nava # 5, San Luis paper. The studied successions from the fueron datadas como del Cenomaniano medio– Potosi, Mexico. upper part of the El Abra Formation were tardío; se proponen dos zonas (Zona de Conjunto dated as mid–late Cenomanian. On the Pseudolituonella reicheli y Zona de Intervalo Iriliana López-Caballero basis of these findings, two zones are pro- Nezzazatinella picardi). La primera Zona de Facultad de Ciencias, Universidad Nacional posed Pseudolituonella reicheli Assemblage Conjunto se caracteriza por una asociación abun- Autonoma de Mexico, Ciudad Universitaria, Zone and Nezzazatinella picardi Interval dante de foraminíferos bentónicos. Está sobreya- Coyoacan, 04510, CDMX, Mexico. Zone. The first Assemblage Zone is cida por la Zona de Intervalo Nezzazatinella characterized by an abundant benthic picardi donde se reduce la riqueza de especies de foraminiferal association. It is overlain las asociaciones de foraminíferos y luego desapa- by the Nezzazatinella picardi Interval Zone rece. La desaparición de foraminíferos bentónicos where the species richness of the fora- es coincidente con grandes cambios de nivel del miniferal assemblage is reduced and later mar y un aumento en el aporte de sedimentos desde disappears. The benthic foraminiferal el depósito hemipelágico de la Formación Soyatal demise is coincident with major sea-level que contiene abundantes pithonélidos y foraminí- changes and an increase in siliciclastic feros planctónicos de estrategía r y r-k (Zona de input from the hemipelagic deposit of the Alcance Parcial (Whiteinella archaeocretacea)). Soyatal Formation, which contains abun- Dos facies estratigráficamente correlacionables dant pithonellids and r and r-k strategist han sidoreconocidas en la Formación El Abra: la planktic foraminifera (Whiteinella archaeo- Facies Taninul y la Facies El Abra. Se infiere cretacea Partial Range Zone). Two strati- un depósito de plataforma marina abierta de graphically correlative facies have been aguas cálidas someras (Facies Taninul). Ésta recognized in the El Abra Formation: the incluye un packstone peloidal con foraminíferos, Taninul and the El Abra Facies. A warm, packstone y packstone-wackestone. Un ambiente shallow-water, open marine platform restringido (Facies El Abra) puede deducirse deposit (Taninul Facies) is inferred. It por los abundantes miliólidos y ostreídos. La includes peloidal-foraminiferal packstone, textura de la roca es un wackestone-packstone. packstone–grainstone, and packstone– Otra microfacies consiste de un wackestone- wackestone. A restricted environment (El packstone con un auge de pithonélidos y la pre- Abra Facies) can be deduced from the sencia de foraminíferos de estrategia r y r-k depo- abundant miliolids and ostreids. The tex- sitados durante la inundación de la plataforma ture is a wackestone–packstone. Another (Formación Soyatal). microfacies (Soyatal Formation) consists of wackestone–packstone with an acme Palabras clave: Cenomaniano, of pithonellids and the occurrence of r foraminíferos bentónicos, and r-k strategist planktic foraminifers Formación El Abra, San Luis deposited during the platform drowning. Potosí, México. BOL. SOC. GEOL. MEX. 2019 VOL. 71 NO. 3 Keywords: Cenomanian, ben- P. 691 ‒ 725 thic foraminifers, El Abra http://dx.doi.org/10.18268/BSGM2019v71n3a5 Formation, San Luis Potosí, Mexico. Manuscript received: April 5, 2018. Corrected manuscript received: May 7, 2018. Manuscript accepted: May 11, 2018. late Cenomanian larger benthic foraminifers from the El Abra Formation – Mid 692 / Boletín de la Sociedad Geológica Mexicana / 2019 1. Introduction and pelagic wackestone bearing planktic foramini- fers and pithonellids (Soyatal Formation). During the mid–Cretaceous, particularly in the The drowned episode in the Cenomanian/Turo- Albian through Cenomanian, widespread carbon- nian (C/T) interval at the global level is linked ate platform development took place throughout INTRODUCTION with rising sea level (Haq et al., 1987; Haq, 2014; the tropical–subtropical shallow-water environ- Hallam, 1992; Miller et al., 2005; Gale et al., 2008), ments of the Tethys (Schroeder and Neumann, and widespread flooding of Mediterranean plat- 1985, p. 5). Benthic foraminifers and algae are the forms (Drzewiecki and Simó, 1977; Caus et al., most important groups that inhabited this milieu. 1997; Hart et al., 2005; El-Sabbagh et al., 2011; In Mexico, during the Albian/Cenomanian, the Korbar et al., 2012). Valles–San Luis Potosí Platform (VSLPP) was part The start of the demise of the carbonate platforms of a wide carbonate platform system that bordered occurred during the latest Cenomanian (Whitei- the ancestral Gulf of Mexico (Salvador, 1991). nella archaeocretacea Zone), with a major biological This platform experienced the evolution of a rich change that affected benthic organisms such as and diverse benthic foraminiferal assemblage now rudists and larger benthic foraminifera. contained in the El Abra Limestone. Philip and Airaud-Crumière (1991, p. 117) docu- In this study, we analyzed calcareous samples mented that the benthic foraminifera were affected derived from the Cenomanian El Abra Formation in two steps; the genera Praealveolina, Chrysalidina, containing an abundant and well-preserved ben- Pseudocyclammina, and Pseudolituonella disappeared thic foraminiferal assemblage that also includes at the top of Geslinianum Zone. During the late algae, corals, echinoderms, and annelids. Cenomanian (Juddii Zone) the benthic forami The El Abra Formation is renowned for its inverte- nifera were scarce and poorly diversified miliolids, brate fossils, primarily Albian rudists, which have been analyzed by numerous authors (e.g. Adkins, textularids, and trochamminids. At second step 1930; Coogan; 1973; Alencáster, 1998; Alencáster occurs when a major extinction affected the ben- and García-Barrera, 2008). thic foraminifera at the C/T boundary. The Albian benthic foraminifers from the El Abra Parente et al. (2008) also reported a two-step pa Formation were documented by Bonet (1956), and ttern of extinction of larger foraminifers in the Tavitas and Solano (1984) from the eastern part upper Cenomanian in shallow-water carbonates VSLPP. They reported an assemblage composed of the southern Apennines (Italy). They stated that of Orbitolina (Mesorbitolina) texana, Dictyoconus wal- “the first step eliminated the alveolinids, the most nutensis (Carsey), Coskinolina sunnilandensis (Maync), extreme k strategists, reducing the diversity of the Pseudonummoloculina heimi (Bonet), and Dicyclina larger foraminifera to less complex forms such as schlumbergeri (Munier-Chalmas). Chrysalidina, Pseudolituonella and Pseudoraphydionina; We studied the benthic foraminiferal community when the high productivity persisted only r–oppor- from the western part of the VSLPP. This associ- tunist planktic foraminifers predominated while ation has been dated as middle-late Cenomanian the rise of the mesotrophic threshold triggered the and is very different from the well-known foramin- second step extinction of larger foraminifera.” iferal association of the eastern part composed However, in the present
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    ESTUDIO TÉCNICO AMBIENTAL DE LÍNEA BASE EN EL ÁREA DE EVALUACIÓN COL 3 SOBRE LA CUENCA SEDIMENTARIA DEL CARIBE COLOMBIANO INFORME TÉCNICO FINAL PRY-BEM-13-17-ITF ESTUDIO TÉCNICO AMBIENTAL DE LÍNEA BASE EN EL ÁREA DE EVALUACIÓN COL 3 SOBRE LA CUENCA SEDIMENTARIA DEL CARIBE COLOMBIANO PRY –BEM-013-17 – ITF CUERPO DIRECTIVO INVEMAR COORDINACIÓN DEL PROYECTO Director General ANH Francisco Armando Arias Isaza INVEMAR Edgar Emilio Rodriguez B. Subdirector Coordinación Científica (SCI) David Alonso Carvajal Martha Patricia Vides C. Anny Lizette Castillo C. Jesús Antonio Garay Tinoco GRUPO DE INVESTIGACION Subdirectora Recursos y Apoyo a la Investigación (SRA) Programa BEM Programa VAR Sandra Rincón Cabal Juan S. Cortes Karen Ayala Laura Londoño Alfredo Rodríguez Ana Gonzalez Cristina Cedeño Anyela Velázquez Coordinadora de Investigación e Luis Rangel Erika Montoya-Cadavid Diana García Información para la Fernando Dorado Eliana Barrios Eylin Jiménez Gestión Marina y Costera (GEZ) Eugenia Escarria Fabián Escobar Paula Cristina Sierra Correa Jose M. Gutierrez Programa GEO Harold Castillo-Navarro Karla Contreras Constanza Ricaurte Javier Gómez-León Coordinador Programa de Biodiversidad y Manuel Garrido Magnolia Murcia Jose Correa-Daza Ecosistemas Marinos (BEM) Maria Mutis Laura Catalina Cantor Katerine Carreño David Alonso Carvajal Eliana Barros Andrés Ordóñez Laura Jutinico Sara Guzmán Paola Andrea Quintero Lina Blandón Coordinadora Programa Calidad Ambiental Adibe Cárdenas David Morales Mario Rueda Marina (CAM) Leonel Fernandez Martha Bastidas Marisol Santos-Acevedo Sandra Pareja Marynes Quintero Luisa Fernanda Espinosa Díaz Catalina Arteaga Mayra Ávila Programa CAM Carlos Benítez Cesar A. Bernal. Sarith Salas-Castro Coordinadora Programa Geociencias Israel Caicedo Marinas y Costeras (GEO) Luisa Espinoza Andrea Polanco+ Constanza Ricaurte Villota GRUPO DE APOYO Coordinador Programa Valoración y Aprovechamiento de Recursos (VAR) Laboratorio de Calidad Ambiental Marina Mario E.
  • New and Poorly Known Middle Jurassic Larger Benthic Foraminifera from the Karst Dinarides of Croatia 

    New and Poorly Known Middle Jurassic Larger Benthic Foraminifera from the Karst Dinarides of Croatia 

    Geologia Croatica 64/2 81–99 15 Figs. 3 Tabs. Zagreb 2011 81 New and poorly known Middle Jurassic larger benthic foraminifera from the Karst Dinarides of Croatia Felix Schlagintweit1 and Ivo Velić2 1Lerchenauerstr. 167, D-80935 München, Germany; ([email protected]) 2Croatian Geological Survey, Sachsova 2, 10000 Zagreb, Croatia; ([email protected]) doi: 104154/gc.2011.08 GeologiaGeologia CroaticaCroatica AB STRA CT Some new and poorly known larger benthic foraminifera are described from Middle Jurassic (Upper Aalenian–Ba- jocian) shallow-water limestones of the Croatian Karst Dinarides. Cymbriaella lorigae FUGAGNOLI is reported for the fi rst time outside its type-locality, the Upper Pliensbachian of the Southern Alps. New taxa described include Bos- niella bassoulleti n. sp. and Dubrovnikella septfontainei n. gen., n. sp. (family Biokovinidae). Both Cymbriaella lori- gae FUGAGNOLI and Everticyclammina praevirguliana FUGAGNOLI are reported for the fi rst time from Middle Jurassic strata. The new fi ndings enlarge the stratigraphic ranges and allow further insights into the phylogenetic evo- lution of the larger benthic foraminifera during the Early to Middle Jurassic period. Keywords: Benthic foraminifera, taxonomy, phylogeny, Middle Jurassic, Karst Dinarides, Croatia 1. INTRODUCTION CHERCHI & SCHROEDER, Pseudodictyopsella jurassica SEPTFONTAINE & DE MATOS, Marzoella fi ccarellii Larger benthic foraminifera are widely distributed in Juras- CHIO CCHINI & MANCINELLI, Paravalvulina complicata sic shallow-water carbonates of the Karst Dinarides. They SEPTFONTAINE, and Pseudoeggerella elongata SEPT- were studied and illustrated in many palaeontological and/ FONTAINE. Based on these fi ndings, four chronostratigra- or biostratigraphical papers, mostly during the ’60s and ’70s phic zones within older Middle Jurassic deposits were estab- of the 20th century, especially from the Lower Jurassic and lished by VELIĆ (2005).
  • Modern Benthic Foraminiferal Diversity: an Initial Insight Into the Total Foraminiferal Diversity Along the Kuwait Coastal Water

    Modern Benthic Foraminiferal Diversity: an Initial Insight Into the Total Foraminiferal Diversity Along the Kuwait Coastal Water

    diversity Article Modern Benthic Foraminiferal Diversity: An Initial Insight into the Total Foraminiferal Diversity along the Kuwait Coastal Water Eqbal Al-Enezi 1, Sawsan Khader 2, Eszter Balassi 3 and Fabrizio Frontalini 3,* 1 Kuwait Institute for Scientific Research, Safat 13109, Kuwait; [email protected] 2 Department of Earth and Environmental Sciences, Faculty of Science, Kuwait University, Safat 13060, Kuwait; [email protected] 3 Department of Pure and Applied Sciences (DiSPeA), Urbino University, 61029 Urbino, Italy; [email protected] * Correspondence: [email protected]; Tel.: +39-392-8457-666 Received: 11 March 2020; Accepted: 2 April 2020; Published: 5 April 2020 Abstract: Kuwait territorial water hosts an important part of national biodiversity (i.e., zooplankton and phytoplankton), but very limited information exists on the overall diversity of benthic foraminifera. On the basis of the integration of publications, reports and theses with new available data from the Kuwait Bay and the northern islands, this study infers the total benthic foraminiferal diversity within Kuwait territorial water. This new literature survey documents the presence of 451 species belonging to 156 genera, 64 families, 31 superfamilies and 9 orders. These values are relatively high in consideration of the limited extension and the shallow depth of the Kuwait territorial water. Kuwait waters offer a variety of different environments and sub-environments (low salinity/muddy areas in the northern part, embayment, rocky tidal flats, coral reef systems, islands and shelf slope) that all together host largely diversified benthic foraminiferal communities. These figures are herein considered as underestimated because of the grouping of unassigned species due to the lack of reference collections and materials, as well as the neglection of the soft-shell monothalamids (‘allogromiids’).