Upper Ordovician sponge spicules from Gondwana: New data from Peru and Libya

Descripción del Articulo

Trabajo presentado en Simposio ICGP 591 ‘The Early to Middle Palaeozoic Revolution’, Closing Meeting Abstract, Ghent University, Belgium, 6-9 july 2016.
Detalles Bibliográficos
Autores: Gutiérrez Marco, Juan Carlos, Carrera, Marcelo Gabriel, Ghienne, Jean-François, Chacaltana Budiel, César Augusto
Formato: objeto de conferencia
Fecha de Publicación:2016
Institución:Instituto Geológico, Minero y Metalúrgico
Repositorio:INGEMMET-Institucional
Lenguaje:inglés
OAI Identifier:oai:repositorio.ingemmet.gob.pe:20.500.12544/1826
Enlace del recurso:https://hdl.handle.net/20.500.12544/1826
Nivel de acceso:acceso abierto
Materia:Fauna espongiario
Esponja
Gondwana
Sponges
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dc.title.es_PE.fl_str_mv Upper Ordovician sponge spicules from Gondwana: New data from Peru and Libya
title Upper Ordovician sponge spicules from Gondwana: New data from Peru and Libya
spellingShingle Upper Ordovician sponge spicules from Gondwana: New data from Peru and Libya
Gutiérrez Marco, Juan Carlos
Fauna espongiario
Esponja
Gondwana
Sponges
title_short Upper Ordovician sponge spicules from Gondwana: New data from Peru and Libya
title_full Upper Ordovician sponge spicules from Gondwana: New data from Peru and Libya
title_fullStr Upper Ordovician sponge spicules from Gondwana: New data from Peru and Libya
title_full_unstemmed Upper Ordovician sponge spicules from Gondwana: New data from Peru and Libya
title_sort Upper Ordovician sponge spicules from Gondwana: New data from Peru and Libya
author Gutiérrez Marco, Juan Carlos
author_facet Gutiérrez Marco, Juan Carlos
Carrera, Marcelo Gabriel
Ghienne, Jean-François
Chacaltana Budiel, César Augusto
author_role author
author2 Carrera, Marcelo Gabriel
Ghienne, Jean-François
Chacaltana Budiel, César Augusto
author2_role author
author
author
dc.contributor.author.fl_str_mv Gutiérrez Marco, Juan Carlos
Carrera, Marcelo Gabriel
Ghienne, Jean-François
Chacaltana Budiel, César Augusto
dc.subject.es_PE.fl_str_mv Fauna espongiario
Esponja
Gondwana
Sponges
topic Fauna espongiario
Esponja
Gondwana
Sponges
description Trabajo presentado en Simposio ICGP 591 ‘The Early to Middle Palaeozoic Revolution’, Closing Meeting Abstract, Ghent University, Belgium, 6-9 july 2016.
publishDate 2016
dc.date.accessioned.none.fl_str_mv 2018-09-24T16:58:39Z
dc.date.available.none.fl_str_mv 2018-09-24T16:58:39Z
dc.date.issued.fl_str_mv 2016-07
dc.type.es_PE.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/20.500.12544/1826
url https://hdl.handle.net/20.500.12544/1826
dc.language.iso.es_PE.fl_str_mv eng
language eng
dc.rights.es_PE.fl_str_mv info:eu-repo/semantics/openAccess
dc.rights.uri.es_PE.fl_str_mv https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.format.es_PE.fl_str_mv application/pdf
dc.coverage.spatial.es_PE.fl_str_mv Perú
Libia
dc.coverage.temporal.none.fl_str_mv Ordovícico
dc.publisher.es_PE.fl_str_mv Ghent University
dc.publisher.country.es_PE.fl_str_mv BE
dc.source.es_PE.fl_str_mv Instituto Geológico, Minero y Metalúrgico – INGEMMET
Repositorio Institucional INGEMMET
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reponame_str INGEMMET-Institucional
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spelling Gutiérrez Marco, Juan CarlosCarrera, Marcelo GabrielGhienne, Jean-FrançoisChacaltana Budiel, César AugustoPerúLibiaOrdovícico2018-09-24T16:58:39Z2018-09-24T16:58:39Z2016-07https://hdl.handle.net/20.500.12544/1826Trabajo presentado en Simposio ICGP 591 ‘The Early to Middle Palaeozoic Revolution’, Closing Meeting Abstract, Ghent University, Belgium, 6-9 july 2016.The record of Middle to Upper Ordovician sponges outside Laurentia and north-Gondwana (=Australia) is too sparse that any new record significantly contribute to the global diversity and biogeographic knowledge of the group (Muir et al. 2013). Conspicuous spicule assemblages and a partially complete sponge have been recorded from Peru and Libya, from where isolated occurrences of Ordovician sponge spicules have been previously reported without any morphological or stratigraphic detail. The spicule association recorded from Peru comes from Sandbian beds on the lower part of the Calapuja Formation west of Lake Titicaca. It consists of isolated hexactins, pentactins and ropes or divergent tufts of elongate, large monaxons in subparallel orientation. Some of these monaxon groupings are clavate masses of slightly divergent, mainly smooth monaxons and some of them are ornamented. These forms resemble the genus Pyritonema McCoy (= Hyalostelia Hinde), commonly misinterpreted until the recent review by Botting (2005). Other spicule assemblages are related to root-tufts of hexactinellids with long monaxons including anchoring terminations. The spicules from the Upper Ordovician of Libya come from the basal horizon of the Melaz Shuqran Formation in the Tihemboka High, west of the Murzuq Basin. The assemblage consists of simple hexactines, hexactine-based stauracts and pentacts and some isolated large monaxons. Different size or rank of hexactines occurred; some of them in an apparent original arrangement. 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