Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | |
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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Anais da Academia Brasileira de Ciências (Online) |
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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 |
format |
article |
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 |
_version_ |
1754302859093999616 |