A new palm trunk from the Upper Cretaceous of Argentina

A new morphospecies of palm trunk, Palmoxylon pichaihuensis sp. nov., is proposed on the basis of several specimens recovered from a succession of tuffs and breccias at Pichaihue, Neuquén Province, Argentina. The specimens comprise atactosteles that display densely crowded fibrovascular bundles in t...

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Detalles Bibliográficos
Autor principal: Ottone, Eduardo Guillermo
Publicado: 2007
Materias:
Argentina
Palm
Upper Cretaceous
angiosperm
Cretaceous
fossil
humid environment
morphology
new species
peripheral region
South America
Palmoxylon
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v44_n4_p719_Ottone
http://hdl.handle.net/20.500.12110/paper_00027014_v44_n4_p719_Ottone
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00027014_v44_n4_p719_Ottone
record_format dspace
spelling paper:paper_00027014_v44_n4_p719_Ottone2023-06-08T14:22:15Z A new palm trunk from the Upper Cretaceous of Argentina Ottone, Eduardo Guillermo Argentina Palm Upper Cretaceous angiosperm Cretaceous fossil humid environment morphology new species peripheral region Argentina South America Palmoxylon A new morphospecies of palm trunk, Palmoxylon pichaihuensis sp. nov., is proposed on the basis of several specimens recovered from a succession of tuffs and breccias at Pichaihue, Neuquén Province, Argentina. The specimens comprise atactosteles that display densely crowded fibrovascular bundles in the peripheral zone, and less congested fibrovascular bundles, randomly scattered or arranged in irregular circles in the central zone; sclerenchyma reniform; xylem with 1-4 large metaxylem vessels and 6-12 smaller protoxylem elements in the central zone, and an f/v ratio of 1.3-2:1. The Pichaihue fossil assemblage is similar to, and probably coeval with the flora of Bajo de Santa Rosa, Río Negro Province, reflecting a warm and relatively humid climate, at ca. 40- 45° S, in southern South America during the Late Cretaceous. © Asociación Paleontológica Argentina. Fil:Ottone, E.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v44_n4_p719_Ottone http://hdl.handle.net/20.500.12110/paper_00027014_v44_n4_p719_Ottone
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
Palm
Upper Cretaceous
angiosperm
Cretaceous
fossil
humid environment
morphology
new species
peripheral region
Argentina
South America
Palmoxylon
spellingShingle Argentina
Palm
Upper Cretaceous
angiosperm
Cretaceous
fossil
humid environment
morphology
new species
peripheral region
Argentina
South America
Palmoxylon
Ottone, Eduardo Guillermo
A new palm trunk from the Upper Cretaceous of Argentina
topic_facet Argentina
Palm
Upper Cretaceous
angiosperm
Cretaceous
fossil
humid environment
morphology
new species
peripheral region
Argentina
South America
Palmoxylon
description A new morphospecies of palm trunk, Palmoxylon pichaihuensis sp. nov., is proposed on the basis of several specimens recovered from a succession of tuffs and breccias at Pichaihue, Neuquén Province, Argentina. The specimens comprise atactosteles that display densely crowded fibrovascular bundles in the peripheral zone, and less congested fibrovascular bundles, randomly scattered or arranged in irregular circles in the central zone; sclerenchyma reniform; xylem with 1-4 large metaxylem vessels and 6-12 smaller protoxylem elements in the central zone, and an f/v ratio of 1.3-2:1. The Pichaihue fossil assemblage is similar to, and probably coeval with the flora of Bajo de Santa Rosa, Río Negro Province, reflecting a warm and relatively humid climate, at ca. 40- 45° S, in southern South America during the Late Cretaceous. © Asociación Paleontológica Argentina.
author Ottone, Eduardo Guillermo
author_facet Ottone, Eduardo Guillermo
author_sort Ottone, Eduardo Guillermo
title A new palm trunk from the Upper Cretaceous of Argentina
title_short A new palm trunk from the Upper Cretaceous of Argentina
title_full A new palm trunk from the Upper Cretaceous of Argentina
title_fullStr A new palm trunk from the Upper Cretaceous of Argentina
title_full_unstemmed A new palm trunk from the Upper Cretaceous of Argentina
title_sort new palm trunk from the upper cretaceous of argentina
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v44_n4_p719_Ottone
http://hdl.handle.net/20.500.12110/paper_00027014_v44_n4_p719_Ottone
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AT ottoneeduardoguillermo newpalmtrunkfromtheuppercretaceousofargentina
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