The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the Lagerstätte

The recent record of extremely rare rhabdopleurid graptolites with a supposed epibiontic life style in the Fezouata biota has to be rejected, as the specimens indicate an epibenthic growth on a shell fragment lying on the sea bottom. In absence of morphological data that support a truly colonial dev...

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Detalhes bibliográficos
Autores: Maletz, Jörg, Gutiérrez Marco, Juan Carlos
Tipo de documento: artigo
Data de publicação:2024
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositório:Docta Complutense
Idioma:inglês
OAI Identifier:oai:docta.ucm.es:20.500.14352/117997
Acesso em linha:https://hdl.handle.net/20.500.14352/117997
Access Level:Acceso aberto
Palavra-chave:562(64)
Benthic graptolites
Epibiontic
Diversity
Lagerstätten
Fezouata Shale
Morocco
Ordovician
Paleontología
2416.02 Paleontología de Los Invertebrados
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spelling The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the LagerstätteMaletz, JörgGutiérrez Marco, Juan Carlos562(64)Benthic graptolitesEpibionticDiversityLagerstättenFezouata ShaleMoroccoOrdovicianPaleontología2416.02 Paleontología de Los InvertebradosThe recent record of extremely rare rhabdopleurid graptolites with a supposed epibiontic life style in the Fezouata biota has to be rejected, as the specimens indicate an epibenthic growth on a shell fragment lying on the sea bottom. In absence of morphological data that support a truly colonial development on these encrusters, it cannot be ruled out that the specimens may alternatively represent the pseudo-colonial tubaria of cephalodiscid-like pterobranchs. The interpretation of the presence of benthic graptolites (class Pterobranchia; subclass Graptolithina) from the Fezouata Shale biota of Morocco provides us with some serious problems. Their life style as benthic or epibenthic organisms living on firm substrates and hardgrounds makes it difficult for them to be preserved in these highly fossiliferous, originally ‘soupy’ soft sediments of the Fezouata Shale, unless they are transported and covered by sediment subsequently. The graptolite record of the Fezouata biota appears to be restricted to planktic forms of Graptoloidea: the review of the few benthic dendroids so far cited for the Lagerstätte resulted in the identification of the rare planktic dendroid genus Calyxdendrum. The problematic species Webbyites felix may represent a hydrozoan (Cnidaria) rather than a benthic graptolite.ElsevierUniversidad Complutense de Madrid20242024-12-0120242024-12-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/117997reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1179972026-06-02T12:44:21Z
dc.title.none.fl_str_mv The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the Lagerstätte
title The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the Lagerstätte
spellingShingle The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the Lagerstätte
Maletz, Jörg
562(64)
Benthic graptolites
Epibiontic
Diversity
Lagerstätten
Fezouata Shale
Morocco
Ordovician
Paleontología
2416.02 Paleontología de Los Invertebrados
title_short The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the Lagerstätte
title_full The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the Lagerstätte
title_fullStr The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the Lagerstätte
title_full_unstemmed The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the Lagerstätte
title_sort The purported record of an epibiontic rhabdopleurid in the early Ordovician Fezouata biota of Morocco, with a discussion about benthic pterobranchs (Hemichordata) in the Lagerstätte
dc.creator.none.fl_str_mv Maletz, Jörg
Gutiérrez Marco, Juan Carlos
author Maletz, Jörg
author_facet Maletz, Jörg
Gutiérrez Marco, Juan Carlos
author_role author
author2 Gutiérrez Marco, Juan Carlos
author2_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 562(64)
Benthic graptolites
Epibiontic
Diversity
Lagerstätten
Fezouata Shale
Morocco
Ordovician
Paleontología
2416.02 Paleontología de Los Invertebrados
topic 562(64)
Benthic graptolites
Epibiontic
Diversity
Lagerstätten
Fezouata Shale
Morocco
Ordovician
Paleontología
2416.02 Paleontología de Los Invertebrados
description The recent record of extremely rare rhabdopleurid graptolites with a supposed epibiontic life style in the Fezouata biota has to be rejected, as the specimens indicate an epibenthic growth on a shell fragment lying on the sea bottom. In absence of morphological data that support a truly colonial development on these encrusters, it cannot be ruled out that the specimens may alternatively represent the pseudo-colonial tubaria of cephalodiscid-like pterobranchs. The interpretation of the presence of benthic graptolites (class Pterobranchia; subclass Graptolithina) from the Fezouata Shale biota of Morocco provides us with some serious problems. Their life style as benthic or epibenthic organisms living on firm substrates and hardgrounds makes it difficult for them to be preserved in these highly fossiliferous, originally ‘soupy’ soft sediments of the Fezouata Shale, unless they are transported and covered by sediment subsequently. The graptolite record of the Fezouata biota appears to be restricted to planktic forms of Graptoloidea: the review of the few benthic dendroids so far cited for the Lagerstätte resulted in the identification of the rare planktic dendroid genus Calyxdendrum. The problematic species Webbyites felix may represent a hydrozoan (Cnidaria) rather than a benthic graptolite.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-12-01
2024
2024-12-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/117997
url https://hdl.handle.net/20.500.14352/117997
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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