Early cretaceous angiosperm leaves from southern South America

Early angiosperm leaves from the Aptian (113 to 119 million years ago) Baqueró Formation of Patagonia have been found in a fossil flora dominated by more than 100 species of gymnosperms and pteridophytes. They may be the first early Cretaceous angiosperm leaves to be reported from southern South Ame...

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Detalles Bibliográficos
Publicado: 1986
Materias:
gymnosperms
pteridophytes
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00368075_v234_n4783_p1580_Romero
http://hdl.handle.net/20.500.12110/paper_00368075_v234_n4783_p1580_Romero
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00368075_v234_n4783_p1580_Romero
record_format dspace
spelling paper:paper_00368075_v234_n4783_p1580_Romero2023-06-08T15:02:03Z Early cretaceous angiosperm leaves from southern South America gymnosperms pteridophytes Early angiosperm leaves from the Aptian (113 to 119 million years ago) Baqueró Formation of Patagonia have been found in a fossil flora dominated by more than 100 species of gymnosperms and pteridophytes. They may be the first early Cretaceous angiosperm leaves to be reported from southern South America and one of the few reported in the Southern Hemisphere. The leaves are large, lobate, craspedodromous, and dentate (A-1 teeth) and have ramified tertiary veins and random fourth-order venation. Several of these features have been found in coeval and younger strata elsewhere, but not in the same combination. They were probably a marginal component of the flora. 1986 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00368075_v234_n4783_p1580_Romero http://hdl.handle.net/20.500.12110/paper_00368075_v234_n4783_p1580_Romero
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic gymnosperms
pteridophytes
spellingShingle gymnosperms
pteridophytes
Early cretaceous angiosperm leaves from southern South America
topic_facet gymnosperms
pteridophytes
description Early angiosperm leaves from the Aptian (113 to 119 million years ago) Baqueró Formation of Patagonia have been found in a fossil flora dominated by more than 100 species of gymnosperms and pteridophytes. They may be the first early Cretaceous angiosperm leaves to be reported from southern South America and one of the few reported in the Southern Hemisphere. The leaves are large, lobate, craspedodromous, and dentate (A-1 teeth) and have ramified tertiary veins and random fourth-order venation. Several of these features have been found in coeval and younger strata elsewhere, but not in the same combination. They were probably a marginal component of the flora.
title Early cretaceous angiosperm leaves from southern South America
title_short Early cretaceous angiosperm leaves from southern South America
title_full Early cretaceous angiosperm leaves from southern South America
title_fullStr Early cretaceous angiosperm leaves from southern South America
title_full_unstemmed Early cretaceous angiosperm leaves from southern South America
title_sort early cretaceous angiosperm leaves from southern south america
publishDate 1986
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00368075_v234_n4783_p1580_Romero
http://hdl.handle.net/20.500.12110/paper_00368075_v234_n4783_p1580_Romero
_version_ 1768544217078956032

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