A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)

The oological record from the late Campanian – early Maastrichtian Poyos fossil site (Guadalajara Province) within the Villalba de la Sierra Formation at the Iberian Ranges, is described here in detail for the first time. This site yields the southernmost and possibly the oldest occurrence of Fusioo...

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Autores: Sanguino, Fernando, Celis, Ane de, Horra Del Barco, Raúl De La, Fernández Fernández, Elena, Fernández Martínez, Javier, Marcos Fernández, María Fátima, Pérez García, Adán, Ortega, Francisco
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/119826
Acesso em linha:https://hdl.handle.net/20.500.14352/119826
Access Level:acceso abierto
Palavra-chave:568.19
Campanian
Maastrichtian
Guadalajara
Parataxonomy
Titanosauria
Fusioolithidae
Paleontología
2416.05 Paleontología de Los Vertebrados
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oai_identifier_str oai:docta.ucm.es:20.500.14352/119826
network_acronym_str ES
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repository_id_str
spelling A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)Sanguino, FernandoCelis, Ane deHorra Del Barco, Raúl De LaFernández Fernández, ElenaFernández Martínez, JavierMarcos Fernández, María FátimaPérez García, AdánOrtega, Francisco568.19CampanianMaastrichtianGuadalajaraParataxonomyTitanosauriaFusioolithidaePaleontología2416.05 Paleontología de Los VertebradosThe oological record from the late Campanian – early Maastrichtian Poyos fossil site (Guadalajara Province) within the Villalba de la Sierra Formation at the Iberian Ranges, is described here in detail for the first time. This site yields the southernmost and possibly the oldest occurrence of Fusioolithus baghensis in Europe, a widespread oospecies mainly found in mid to uppermost Maastrichtian deposits. The record from Poyos also allows the recognition of the second fusioolithid ootaxon from Europe, herein described as Litosoolithus poyosi oogen. et oosp. nov. This ootaxon is mainly characterized by very large eggs with a exceptionally thin eggshell compared to other ootaxa attributed to titanosaur sauropods. It also exhibits an unusually low porosity, and an eggshell composed of an uneven combination of two types of shell units which differ in their shape, dimensions, fusion degree, and absence or presence of a node. This new ootaxon also presents a dispersituberculated ornamentation that contrasts with the typical compactituberculated ornamentation of the Fusioolithus oogenus. The analysis of the spherolith dimensions of Fusioolithidae and Megaloolithidae ootaxa provides statistical support for discriminating Litosoolithus poyosi from other oospecies and for recognizing the differences between its two types of spheroliths. Litosoolithus poyosi and Fusioolithus baghensis co-occur on the same stratigraphic levels in Poyos which is, unlike the co-occurrence of megaloolithids or megaloolithids with fusioolithids, a rare occurrence in the global fossil record outside India. Therefore, the record of the Poyos site provides valuable data for ongoing discussions, allowing comparison with other similarly aged Ibero-Armorican formations.Universidad Complutense de Madrid20252025-01-0120252025-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/119826reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1198262026-06-02T12:44:21Z
dc.title.none.fl_str_mv A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)
title A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)
spellingShingle A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)
Sanguino, Fernando
568.19
Campanian
Maastrichtian
Guadalajara
Parataxonomy
Titanosauria
Fusioolithidae
Paleontología
2416.05 Paleontología de Los Vertebrados
title_short A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)
title_full A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)
title_fullStr A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)
title_full_unstemmed A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)
title_sort A unique association of fusioolithid dinosaur eggs from the Upper Cretaceous of Spain (Poyos, central system)
dc.creator.none.fl_str_mv Sanguino, Fernando
Celis, Ane de
Horra Del Barco, Raúl De La
Fernández Fernández, Elena
Fernández Martínez, Javier
Marcos Fernández, María Fátima
Pérez García, Adán
Ortega, Francisco
author Sanguino, Fernando
author_facet Sanguino, Fernando
Celis, Ane de
Horra Del Barco, Raúl De La
Fernández Fernández, Elena
Fernández Martínez, Javier
Marcos Fernández, María Fátima
Pérez García, Adán
Ortega, Francisco
author_role author
author2 Celis, Ane de
Horra Del Barco, Raúl De La
Fernández Fernández, Elena
Fernández Martínez, Javier
Marcos Fernández, María Fátima
Pérez García, Adán
Ortega, Francisco
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 568.19
Campanian
Maastrichtian
Guadalajara
Parataxonomy
Titanosauria
Fusioolithidae
Paleontología
2416.05 Paleontología de Los Vertebrados
topic 568.19
Campanian
Maastrichtian
Guadalajara
Parataxonomy
Titanosauria
Fusioolithidae
Paleontología
2416.05 Paleontología de Los Vertebrados
description The oological record from the late Campanian – early Maastrichtian Poyos fossil site (Guadalajara Province) within the Villalba de la Sierra Formation at the Iberian Ranges, is described here in detail for the first time. This site yields the southernmost and possibly the oldest occurrence of Fusioolithus baghensis in Europe, a widespread oospecies mainly found in mid to uppermost Maastrichtian deposits. The record from Poyos also allows the recognition of the second fusioolithid ootaxon from Europe, herein described as Litosoolithus poyosi oogen. et oosp. nov. This ootaxon is mainly characterized by very large eggs with a exceptionally thin eggshell compared to other ootaxa attributed to titanosaur sauropods. It also exhibits an unusually low porosity, and an eggshell composed of an uneven combination of two types of shell units which differ in their shape, dimensions, fusion degree, and absence or presence of a node. This new ootaxon also presents a dispersituberculated ornamentation that contrasts with the typical compactituberculated ornamentation of the Fusioolithus oogenus. The analysis of the spherolith dimensions of Fusioolithidae and Megaloolithidae ootaxa provides statistical support for discriminating Litosoolithus poyosi from other oospecies and for recognizing the differences between its two types of spheroliths. Litosoolithus poyosi and Fusioolithus baghensis co-occur on the same stratigraphic levels in Poyos which is, unlike the co-occurrence of megaloolithids or megaloolithids with fusioolithids, a rare occurrence in the global fossil record outside India. Therefore, the record of the Poyos site provides valuable data for ongoing discussions, allowing comparison with other similarly aged Ibero-Armorican formations.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-01-01
2025
2025-01-01
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/20.500.14352/119826
url https://hdl.handle.net/20.500.14352/119826
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-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/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-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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
_version_ 1869409272701386752
score 15.812429

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