Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina

Detalhes bibliográficos
Autor(a) principal: Vera,Ezequiel I.
Data de Publicação: 2012
Outros Autores: Césari,Silvia N.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Anais da Academia Brasileira de Ciências (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300005
Resumo: Two new conifer morphospecies represented by a secondary xylem are reported for the Lower Cretaceous Baqueró Group (Santa Cruz Province, Argentina). Agathoxylon sp. is characterized by poorly defined growth rings, predominantly uniseriate pitting in the radial wall of the tracheids, cross fields with 1-6 pits and uniseriate rays. These features are shared with the leafy branches described for the unit as Araucaria grandifolia Feruglio emend. Del Fueyo and Archangelsky. The second taxon, Brachyoxylon sp. cf. B. boureaui, possesses poorly defined growth rings, mixed wood with predominantly uniseriate radial pitting, cross fields with 8-26 pits and uniseriate rays. These taxa represent the first fossil woods described for Baqueroan strata.
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spelling Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, ArgentinaFossil woodsAgathoxylonBrachyoxylonLower CretaceousPatagoniaBaqueró GroupTwo new conifer morphospecies represented by a secondary xylem are reported for the Lower Cretaceous Baqueró Group (Santa Cruz Province, Argentina). Agathoxylon sp. is characterized by poorly defined growth rings, predominantly uniseriate pitting in the radial wall of the tracheids, cross fields with 1-6 pits and uniseriate rays. These features are shared with the leafy branches described for the unit as Araucaria grandifolia Feruglio emend. Del Fueyo and Archangelsky. The second taxon, Brachyoxylon sp. cf. B. boureaui, possesses poorly defined growth rings, mixed wood with predominantly uniseriate radial pitting, cross fields with 8-26 pits and uniseriate rays. These taxa represent the first fossil woods described for Baqueroan strata.Academia Brasileira de Ciências2012-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300005Anais da Academia Brasileira de Ciências v.84 n.3 2012reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/S0001-37652012005000047info:eu-repo/semantics/openAccessVera,Ezequiel I.Césari,Silvia N.eng2012-08-06T00:00:00Zoai:scielo:S0001-37652012000300005Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2012-08-06T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false
dc.title.none.fl_str_mv Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina
title Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina
spellingShingle Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina
Vera,Ezequiel I.
Fossil woods
Agathoxylon
Brachyoxylon
Lower Cretaceous
Patagonia
Baqueró Group
title_short Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina
title_full Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina
title_fullStr Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina
title_full_unstemmed Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina
title_sort Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina
author Vera,Ezequiel I.
author_facet Vera,Ezequiel I.
Césari,Silvia N.
author_role author
author2 Césari,Silvia N.
author2_role author
dc.contributor.author.fl_str_mv Vera,Ezequiel I.
Césari,Silvia N.
dc.subject.por.fl_str_mv Fossil woods
Agathoxylon
Brachyoxylon
Lower Cretaceous
Patagonia
Baqueró Group
topic Fossil woods
Agathoxylon
Brachyoxylon
Lower Cretaceous
Patagonia
Baqueró Group
description Two new conifer morphospecies represented by a secondary xylem are reported for the Lower Cretaceous Baqueró Group (Santa Cruz Province, Argentina). Agathoxylon sp. is characterized by poorly defined growth rings, predominantly uniseriate pitting in the radial wall of the tracheids, cross fields with 1-6 pits and uniseriate rays. These features are shared with the leafy branches described for the unit as Araucaria grandifolia Feruglio emend. Del Fueyo and Archangelsky. The second taxon, Brachyoxylon sp. cf. B. boureaui, possesses poorly defined growth rings, mixed wood with predominantly uniseriate radial pitting, cross fields with 8-26 pits and uniseriate rays. These taxa represent the first fossil woods described for Baqueroan strata.
publishDate 2012
dc.date.none.fl_str_mv 2012-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0001-37652012005000047
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Academia Brasileira de Ciências
publisher.none.fl_str_mv Academia Brasileira de Ciências
dc.source.none.fl_str_mv Anais da Academia Brasileira de Ciências v.84 n.3 2012
reponame:Anais da Academia Brasileira de Ciências (Online)
instname:Academia Brasileira de Ciências (ABC)
instacron:ABC
instname_str Academia Brasileira de Ciências (ABC)
instacron_str ABC
institution ABC
reponame_str Anais da Academia Brasileira de Ciências (Online)
collection Anais da Academia Brasileira de Ciências (Online)
repository.name.fl_str_mv Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)
repository.mail.fl_str_mv ||aabc@abc.org.br
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