Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)

Two ichnofabrics characterized by abundant vertical and helical burrows (ichnogenus Gyrolithes) are described from the Pliocene siliciclastic facies of the southwestern sector of the Guadalquivir Basin (Lepe, Huelva, SW Spain). These ichnofabrics, associated with shallow and marginal marine environm...

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Authors: Muñiz, Fernando, Belaústegui Barahona, Zain
Format: article
Status:Versión aceptada para publicación
Publication Date:2019
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/223719
Online Access:https://hdl.handle.net/2445/223719
Access Level:Open access
Keyword:Icnologia
Paleoecologia
Paleontologia
Pliocè
Ichnology
Paleoecology
Paleontology
Pliocene
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spelling Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)Muñiz, FernandoBelaústegui Barahona, ZainIcnologiaPaleoecologiaPaleontologiaPliocèIchnologyPaleoecologyPaleontologyPlioceneTwo ichnofabrics characterized by abundant vertical and helical burrows (ichnogenus Gyrolithes) are described from the Pliocene siliciclastic facies of the southwestern sector of the Guadalquivir Basin (Lepe, Huelva, SW Spain). These ichnofabrics, associated with shallow and marginal marine environments, characterize two consecutive and concordant stratigraphic units: (1) the lower one is dominated by G. nodosus (together with other pellet-lined ichnotaxa), occurs in fine- to medium-grained, massive sands and silty sands, and is characterized by moderate to high bioturbation; (2) the upper ichnofabric is dominated by G. variabilis (and other unlined ichnofossils), occurs in sandy silts, and is characterized by low to high bioturbation. The transition of these two ichnofabrics clearly reflects the ability of an infaunal community to assimilate environmental changes over time. Additionally, new observations at the type locality of G. nodosus, the description of a new locality for G. variabilis and review of existing literature on this ichnogenus have provided the bases for emending the diagnoses of both ichnospecies, to propose a neotype for G. nodosus and to suggest a new type locality for G. variabilis. According to the main architectural features of Gyrolithes specimens studied herein and by comparison with modern analogues, 'thalassinidean' shrimps are proposed as their most likely tracemakers. Although it is known that these kinds of crustaceans exhibit a great variability in regards to their burrowing behaviors, further study is needed in order to more fully understand the purpose of these helical bioturbation structures.Society of Economic Paleontologists and Mineralogists.2025202520192025info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion43 p.application/pdfhttps://hdl.handle.net/2445/223719Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.2110/palo.2018.084Palaios, 2019, vol. 34, num.1, p. 1-14https://doi.org/10.2110/palo.2018.084(c) Society of Economic Paleontologists and Mineralogists., 2019info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2237192026-05-29T05:05:01Z
dc.title.none.fl_str_mv Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
title Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
spellingShingle Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
Muñiz, Fernando
Icnologia
Paleoecologia
Paleontologia
Pliocè
Ichnology
Paleoecology
Paleontology
Pliocene
title_short Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
title_full Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
title_fullStr Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
title_full_unstemmed Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
title_sort Helical crustacean burrows: <em>Gyrolithes</em> ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
dc.creator.none.fl_str_mv Muñiz, Fernando
Belaústegui Barahona, Zain
author Muñiz, Fernando
author_facet Muñiz, Fernando
Belaústegui Barahona, Zain
author_role author
author2 Belaústegui Barahona, Zain
author2_role author
dc.subject.none.fl_str_mv Icnologia
Paleoecologia
Paleontologia
Pliocè
Ichnology
Paleoecology
Paleontology
Pliocene
topic Icnologia
Paleoecologia
Paleontologia
Pliocè
Ichnology
Paleoecology
Paleontology
Pliocene
description Two ichnofabrics characterized by abundant vertical and helical burrows (ichnogenus Gyrolithes) are described from the Pliocene siliciclastic facies of the southwestern sector of the Guadalquivir Basin (Lepe, Huelva, SW Spain). These ichnofabrics, associated with shallow and marginal marine environments, characterize two consecutive and concordant stratigraphic units: (1) the lower one is dominated by G. nodosus (together with other pellet-lined ichnotaxa), occurs in fine- to medium-grained, massive sands and silty sands, and is characterized by moderate to high bioturbation; (2) the upper ichnofabric is dominated by G. variabilis (and other unlined ichnofossils), occurs in sandy silts, and is characterized by low to high bioturbation. The transition of these two ichnofabrics clearly reflects the ability of an infaunal community to assimilate environmental changes over time. Additionally, new observations at the type locality of G. nodosus, the description of a new locality for G. variabilis and review of existing literature on this ichnogenus have provided the bases for emending the diagnoses of both ichnospecies, to propose a neotype for G. nodosus and to suggest a new type locality for G. variabilis. According to the main architectural features of Gyrolithes specimens studied herein and by comparison with modern analogues, 'thalassinidean' shrimps are proposed as their most likely tracemakers. Although it is known that these kinds of crustaceans exhibit a great variability in regards to their burrowing behaviors, further study is needed in order to more fully understand the purpose of these helical bioturbation structures.
publishDate 2019
dc.date.none.fl_str_mv 2019
2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/223719
url https://hdl.handle.net/2445/223719
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.2110/palo.2018.084
Palaios, 2019, vol. 34, num.1, p. 1-14
https://doi.org/10.2110/palo.2018.084
dc.rights.none.fl_str_mv (c) Society of Economic Paleontologists and Mineralogists., 2019
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Society of Economic Paleontologists and Mineralogists., 2019
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 43 p.
application/pdf
dc.publisher.none.fl_str_mv Society of Economic Paleontologists and Mineralogists.
publisher.none.fl_str_mv Society of Economic Paleontologists and Mineralogists.
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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