Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South China

The study of moulting behaviour in the fossil record is relatively well known in arthropods and this is especially true for trilobites. Nevertheless, while studies focusing on the style of moulting in social and semi-social groups of modern animals (e.g. arthropods) are common, very few works invest...

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Detalles Bibliográficos
Autores: Corrales, Alejandro, Esteve Serrano, Jorge Vicente, YuanLong, Zhao, XingLian, Yang
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/98661
Acceso en línea:https://hdl.handle.net/20.500.14352/98661
Access Level:acceso abierto
Palabra clave:565.393
Paleontología
2416.02 Paleontología de Los Invertebrados
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spelling Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South ChinaCorrales, AlejandroEsteve Serrano, Jorge VicenteYuanLong, ZhaoXingLian, Yang565.393Paleontología2416.02 Paleontología de Los InvertebradosThe study of moulting behaviour in the fossil record is relatively well known in arthropods and this is especially true for trilobites. Nevertheless, while studies focusing on the style of moulting in social and semi-social groups of modern animals (e.g. arthropods) are common, very few works investigate moulting adaptations in deep time. Here we report a trilobite assemblage from the Cambrian Series 2 “Tsinghsutung” Formation of South China. Around 850 specimens were used for this study from three diferent levels across one section near Balang (SE Guizhou Province, South China). These levels preserve numerous trilobite clusters in some cases containing around 400 individual specimens. Up to four species have been found in these clusters, but two species are more common. Trilobite clusters bear a high percentage of disarticulated specimens that we interpret as moults. Additionally, measurements of bioclast orientation and the dorsoventral attitude suggests very quiet water conditions followed by rapid burial events, prior to scavenger disturbance. Together, this indicates that the fossil assemblages were a result of a biological phenomenon rather than mechanical processes, allowing us to interpret the position of the fossil parts as diferent moulting confgurations. Since the trilobite assemblage seems to be in situ, the large number of exuviae suggests a local place of migration. This was triggered by the need for group protection while moulting, which is suggestive of gregarious behaviour, possibly synchronized. These trilobites from the Cambrian Epoch 2, Age 4 constitute one of the earliest known gregarious community of trilobites and has important implications for understanding the ecology of this group during their emergence in the Cambrian.Nature Publishing GroupUniversidad Complutense de Madrid20202020-01-0120202020-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/98661reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengINV-2019-62- 1652 Not available Not availableXDB26000000 Not available Not available41772021 Not available Not available41962002 Not available Not available2015FY310100 Not available Not availableDD20160120-04 Not available Not availableCGL2017-87631-P Not available Not availableopen 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:20.500.14352/986612026-06-02T12:44:21Z
dc.title.none.fl_str_mv Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South China
title Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South China
spellingShingle Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South China
Corrales, Alejandro
565.393
Paleontología
2416.02 Paleontología de Los Invertebrados
title_short Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South China
title_full Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South China
title_fullStr Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South China
title_full_unstemmed Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South China
title_sort Synchronized moulting behaviour in trilobites from the Cambrian Series 2 of South China
dc.creator.none.fl_str_mv Corrales, Alejandro
Esteve Serrano, Jorge Vicente
YuanLong, Zhao
XingLian, Yang
author Corrales, Alejandro
author_facet Corrales, Alejandro
Esteve Serrano, Jorge Vicente
YuanLong, Zhao
XingLian, Yang
author_role author
author2 Esteve Serrano, Jorge Vicente
YuanLong, Zhao
XingLian, Yang
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 565.393
Paleontología
2416.02 Paleontología de Los Invertebrados
topic 565.393
Paleontología
2416.02 Paleontología de Los Invertebrados
description The study of moulting behaviour in the fossil record is relatively well known in arthropods and this is especially true for trilobites. Nevertheless, while studies focusing on the style of moulting in social and semi-social groups of modern animals (e.g. arthropods) are common, very few works investigate moulting adaptations in deep time. Here we report a trilobite assemblage from the Cambrian Series 2 “Tsinghsutung” Formation of South China. Around 850 specimens were used for this study from three diferent levels across one section near Balang (SE Guizhou Province, South China). These levels preserve numerous trilobite clusters in some cases containing around 400 individual specimens. Up to four species have been found in these clusters, but two species are more common. Trilobite clusters bear a high percentage of disarticulated specimens that we interpret as moults. Additionally, measurements of bioclast orientation and the dorsoventral attitude suggests very quiet water conditions followed by rapid burial events, prior to scavenger disturbance. Together, this indicates that the fossil assemblages were a result of a biological phenomenon rather than mechanical processes, allowing us to interpret the position of the fossil parts as diferent moulting confgurations. Since the trilobite assemblage seems to be in situ, the large number of exuviae suggests a local place of migration. This was triggered by the need for group protection while moulting, which is suggestive of gregarious behaviour, possibly synchronized. These trilobites from the Cambrian Epoch 2, Age 4 constitute one of the earliest known gregarious community of trilobites and has important implications for understanding the ecology of this group during their emergence in the Cambrian.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-01-01
2020
2020-01-01
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/20.500.14352/98661
url https://hdl.handle.net/20.500.14352/98661
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv INV-2019-62- 1652 Not available Not available
XDB26000000 Not available Not available
41772021 Not available Not available
41962002 Not available Not available
2015FY310100 Not available Not available
DD20160120-04 Not available Not available
CGL2017-87631-P Not available Not available
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 Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
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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