Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE Brazil
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jsames.2021.103443 http://hdl.handle.net/11449/233355 |
Resumo: | Brachyurans played important ecological and evolutionary roles in the marine benthic communities of the past and were the components of the Mesozoic Decapod Revolution. Therefore, the search for their fossil remains is fundamental to understanding the composition, diversity, and ecological structure of Mesozoic marine benthic communities. Brachyuran remains are uncommon in the decapod record of the Aptian Romualdo Formation in the Araripe Basin. In this context, we recorded and described new occurrences of Exucarcinus gonzagai, preserved in shales from the middle portion of the Romualdo Formation, near the city of Jardim in the State of Ceará. Comparisons between these new specimens and former specimens from the Exu locality, State of Pernambuco, including the type material, allowed us to recognize, for the first time, three distinct ontogenetic stages (i.e., informally referred as I, II, and III). Throughout ontogenetic development, the carapace becomes wider and spinier. Stage III carapaces exhibit a large number of grooves, although the grooves are poorly impressed, and some are pitted. Growth also resulted in better-developed orbital lobes and fissures. In addition, the preservation of some anatomical structures is highly influenced by the carapace fossilization process (i.e., molds or cuticles), including the tubercles, grooves, and spines. Unfortunately, those characters that can vary according to ontogenetic development or fossilization are commonly used in the systematic and phylogenetic decisions of the group. Hence, it is advisable to consider these changes whenever possible to avoid the erection of taphotaxons and mistaken phylogenetic decisions. |
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Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE BrazilAptianBrachyuraExucarcinusFrog crabOrithopsidaeRomualdo formationBrachyurans played important ecological and evolutionary roles in the marine benthic communities of the past and were the components of the Mesozoic Decapod Revolution. Therefore, the search for their fossil remains is fundamental to understanding the composition, diversity, and ecological structure of Mesozoic marine benthic communities. Brachyuran remains are uncommon in the decapod record of the Aptian Romualdo Formation in the Araripe Basin. In this context, we recorded and described new occurrences of Exucarcinus gonzagai, preserved in shales from the middle portion of the Romualdo Formation, near the city of Jardim in the State of Ceará. Comparisons between these new specimens and former specimens from the Exu locality, State of Pernambuco, including the type material, allowed us to recognize, for the first time, three distinct ontogenetic stages (i.e., informally referred as I, II, and III). Throughout ontogenetic development, the carapace becomes wider and spinier. Stage III carapaces exhibit a large number of grooves, although the grooves are poorly impressed, and some are pitted. Growth also resulted in better-developed orbital lobes and fissures. In addition, the preservation of some anatomical structures is highly influenced by the carapace fossilization process (i.e., molds or cuticles), including the tubercles, grooves, and spines. Unfortunately, those characters that can vary according to ontogenetic development or fossilization are commonly used in the systematic and phylogenetic decisions of the group. Hence, it is advisable to consider these changes whenever possible to avoid the erection of taphotaxons and mistaken phylogenetic decisions.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)PetrobrasConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Instituto de Biociências Universidade Estadual Paulista, Distrito de Rubião JuniorDepartamento de Geologia Centro de Tecnologia e Geociências Universidade Federal de PernambucoInstituto de Geociências Universidade de São PauloDepartamento de Geologia Escola de Minas Universidade Federal de Ouro Preto, Morro do CruzeiroDepartamento de Geociências Instituto de Ciências Exatas Universidade Federal do AmazonasFG Paläoumwelt GeoZentrum Nordbayern der Friedrich-Alexander-Universität Erlangen-Nürnberg, Loewenichstrasse 28Departamento de Geologia Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista Campus de Rio ClaroInstituto de Biociências Universidade Estadual Paulista, Distrito de Rubião JuniorDepartamento de Geologia Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista Campus de Rio ClaroFAPESP: 17/20803–1Petrobras: 2014/00519–9CNPq: 304800/2017–1CNPq: 401039/2014–5Universidade Estadual Paulista (UNESP)Universidade Federal de Pernambuco (UFPE)Universidade de São Paulo (USP)Universidade Federal de Ouro PretoUniversidade Federal do AmazonasGeoZentrum Nordbayern der Friedrich-Alexander-Universität Erlangen-NürnbergMatos, Suzana Aparecida [UNESP]Castilho, Antonio Leão [UNESP]Prado, Ludmila Alves Cadeira doBondioli, João GuedesVarejão, Filipe GiovaniniCustódio, Michele AndriolliFürsich, Franz TheodorAssine, Mario Luis [UNESP]Simões, Marcello Guimarães [UNESP]2022-05-01T07:58:52Z2022-05-01T07:58:52Z2021-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jsames.2021.103443Journal of South American Earth Sciences, v. 111.0895-9811http://hdl.handle.net/11449/23335510.1016/j.jsames.2021.1034432-s2.0-85111951333Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of South American Earth Sciencesinfo:eu-repo/semantics/openAccess2022-05-01T07:58:52Zoai:repositorio.unesp.br:11449/233355Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-05-01T07:58:52Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE Brazil |
title |
Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE Brazil |
spellingShingle |
Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE Brazil Matos, Suzana Aparecida [UNESP] Aptian Brachyura Exucarcinus Frog crab Orithopsidae Romualdo formation |
title_short |
Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE Brazil |
title_full |
Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE Brazil |
title_fullStr |
Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE Brazil |
title_full_unstemmed |
Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE Brazil |
title_sort |
Taphonomy and ontogeny of the brachyuran crab Exucarcinus gonzagai, from the Lower Cretaceous (Aptian) Romualdo Formation, Araripe Basin, NE Brazil |
author |
Matos, Suzana Aparecida [UNESP] |
author_facet |
Matos, Suzana Aparecida [UNESP] Castilho, Antonio Leão [UNESP] Prado, Ludmila Alves Cadeira do Bondioli, João Guedes Varejão, Filipe Giovanini Custódio, Michele Andriolli Fürsich, Franz Theodor Assine, Mario Luis [UNESP] Simões, Marcello Guimarães [UNESP] |
author_role |
author |
author2 |
Castilho, Antonio Leão [UNESP] Prado, Ludmila Alves Cadeira do Bondioli, João Guedes Varejão, Filipe Giovanini Custódio, Michele Andriolli Fürsich, Franz Theodor Assine, Mario Luis [UNESP] Simões, Marcello Guimarães [UNESP] |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Federal de Pernambuco (UFPE) Universidade de São Paulo (USP) Universidade Federal de Ouro Preto Universidade Federal do Amazonas GeoZentrum Nordbayern der Friedrich-Alexander-Universität Erlangen-Nürnberg |
dc.contributor.author.fl_str_mv |
Matos, Suzana Aparecida [UNESP] Castilho, Antonio Leão [UNESP] Prado, Ludmila Alves Cadeira do Bondioli, João Guedes Varejão, Filipe Giovanini Custódio, Michele Andriolli Fürsich, Franz Theodor Assine, Mario Luis [UNESP] Simões, Marcello Guimarães [UNESP] |
dc.subject.por.fl_str_mv |
Aptian Brachyura Exucarcinus Frog crab Orithopsidae Romualdo formation |
topic |
Aptian Brachyura Exucarcinus Frog crab Orithopsidae Romualdo formation |
description |
Brachyurans played important ecological and evolutionary roles in the marine benthic communities of the past and were the components of the Mesozoic Decapod Revolution. Therefore, the search for their fossil remains is fundamental to understanding the composition, diversity, and ecological structure of Mesozoic marine benthic communities. Brachyuran remains are uncommon in the decapod record of the Aptian Romualdo Formation in the Araripe Basin. In this context, we recorded and described new occurrences of Exucarcinus gonzagai, preserved in shales from the middle portion of the Romualdo Formation, near the city of Jardim in the State of Ceará. Comparisons between these new specimens and former specimens from the Exu locality, State of Pernambuco, including the type material, allowed us to recognize, for the first time, three distinct ontogenetic stages (i.e., informally referred as I, II, and III). Throughout ontogenetic development, the carapace becomes wider and spinier. Stage III carapaces exhibit a large number of grooves, although the grooves are poorly impressed, and some are pitted. Growth also resulted in better-developed orbital lobes and fissures. In addition, the preservation of some anatomical structures is highly influenced by the carapace fossilization process (i.e., molds or cuticles), including the tubercles, grooves, and spines. Unfortunately, those characters that can vary according to ontogenetic development or fossilization are commonly used in the systematic and phylogenetic decisions of the group. Hence, it is advisable to consider these changes whenever possible to avoid the erection of taphotaxons and mistaken phylogenetic decisions. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-11-01 2022-05-01T07:58:52Z 2022-05-01T07:58:52Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.jsames.2021.103443 Journal of South American Earth Sciences, v. 111. 0895-9811 http://hdl.handle.net/11449/233355 10.1016/j.jsames.2021.103443 2-s2.0-85111951333 |
url |
http://dx.doi.org/10.1016/j.jsames.2021.103443 http://hdl.handle.net/11449/233355 |
identifier_str_mv |
Journal of South American Earth Sciences, v. 111. 0895-9811 10.1016/j.jsames.2021.103443 2-s2.0-85111951333 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of South American Earth Sciences |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965295737044992 |