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, E.G.
Formato: JOUR
Materias:
Argentina
Palm
Upper Cretaceous
angiosperm
Cretaceous
fossil
humid environment
morphology
new species
peripheral region
South America
Palmoxylon
Acceso en línea: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 todo:paper_00027014_v44_n4_p719_Ottone
record_format dspace
spelling todo:paper_00027014_v44_n4_p719_Ottone2023-10-03T13:53:02Z A new palm trunk from the Upper Cretaceous of Argentina Ottone, E.G. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, E.G.
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.
format JOUR
author Ottone, E.G.
author_facet Ottone, E.G.
author_sort Ottone, E.G.
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
url http://hdl.handle.net/20.500.12110/paper_00027014_v44_n4_p719_Ottone
work_keys_str_mv AT ottoneeg anewpalmtrunkfromtheuppercretaceousofargentina
AT ottoneeg newpalmtrunkfromtheuppercretaceousofargentina
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