A late Paleozoic fossil forest from the southern Andes, Argentina

An anatomical and ecological study of a Late Pennsylvanian-early Permian assemblage of silicified trunks from the San Ignacio Formation of southern Andean Cordillera is detailed. This stratigraphic unit has been divided in three facies associations. The silicified trunks are abundant in the middle p...

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Detalles Bibliográficos
Publicado: 2012
Materias:
Anatomy
Gondwana
Late Paleozoic
Paleoecology
Trees
anatomy
biostratigraphy
facies
fossil record
paleoecology
Pennsylvanian
Permian
sedimentology
vascular plant
Andes
Argentina
Misiones [Argentina]
San Ignacio
Arthropoda
Cordaitales
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00310182_v333-334_n_p131_Cesari
http://hdl.handle.net/20.500.12110/paper_00310182_v333-334_n_p131_Cesari
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00310182_v333-334_n_p131_Cesari
record_format dspace
spelling paper:paper_00310182_v333-334_n_p131_Cesari2023-06-08T14:56:39Z A late Paleozoic fossil forest from the southern Andes, Argentina Anatomy Gondwana Late Paleozoic Paleoecology Trees anatomy biostratigraphy facies fossil record paleoecology Pennsylvanian Permian sedimentology vascular plant Andes Argentina Misiones [Argentina] San Ignacio Arthropoda Cordaitales An anatomical and ecological study of a Late Pennsylvanian-early Permian assemblage of silicified trunks from the San Ignacio Formation of southern Andean Cordillera is detailed. This stratigraphic unit has been divided in three facies associations. The silicified trunks are abundant in the middle part of the facies association C (limestones, shales and volcanics) forming a persistent forested stratigraphic level. Anatomical information integrated with sedimentological data, has allowed reconstruction of a plant community that grew on the westernmost margin of Gondwana. The paleoforest grew in wetland environments, where a taphocoenosis of only permineralized trunks and stumps has been preserved. Based on characters of the stem and roots the trees are cordaitaleans, though distinct from other members of this group. Vascular traces exhibit tracheids arranged in circular patterns indicating auxin regulation of axial growth and probably the presence of epicormic shoots. These fossil trees also preserve anatomical evidence of plant-arthropod interactions and rootlets invading the decaying wood. Indistinct growth rings as well as additional indirect evidence indicate that this ecosystem experienced an overall humid, warm climatic regime. © 2012 Elsevier B.V. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00310182_v333-334_n_p131_Cesari http://hdl.handle.net/20.500.12110/paper_00310182_v333-334_n_p131_Cesari
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Anatomy
Gondwana
Late Paleozoic
Paleoecology
Trees
anatomy
biostratigraphy
facies
fossil record
paleoecology
Pennsylvanian
Permian
sedimentology
vascular plant
Andes
Argentina
Misiones [Argentina]
San Ignacio
Arthropoda
Cordaitales
spellingShingle Anatomy
Gondwana
Late Paleozoic
Paleoecology
Trees
anatomy
biostratigraphy
facies
fossil record
paleoecology
Pennsylvanian
Permian
sedimentology
vascular plant
Andes
Argentina
Misiones [Argentina]
San Ignacio
Arthropoda
Cordaitales
A late Paleozoic fossil forest from the southern Andes, Argentina
topic_facet Anatomy
Gondwana
Late Paleozoic
Paleoecology
Trees
anatomy
biostratigraphy
facies
fossil record
paleoecology
Pennsylvanian
Permian
sedimentology
vascular plant
Andes
Argentina
Misiones [Argentina]
San Ignacio
Arthropoda
Cordaitales
description An anatomical and ecological study of a Late Pennsylvanian-early Permian assemblage of silicified trunks from the San Ignacio Formation of southern Andean Cordillera is detailed. This stratigraphic unit has been divided in three facies associations. The silicified trunks are abundant in the middle part of the facies association C (limestones, shales and volcanics) forming a persistent forested stratigraphic level. Anatomical information integrated with sedimentological data, has allowed reconstruction of a plant community that grew on the westernmost margin of Gondwana. The paleoforest grew in wetland environments, where a taphocoenosis of only permineralized trunks and stumps has been preserved. Based on characters of the stem and roots the trees are cordaitaleans, though distinct from other members of this group. Vascular traces exhibit tracheids arranged in circular patterns indicating auxin regulation of axial growth and probably the presence of epicormic shoots. These fossil trees also preserve anatomical evidence of plant-arthropod interactions and rootlets invading the decaying wood. Indistinct growth rings as well as additional indirect evidence indicate that this ecosystem experienced an overall humid, warm climatic regime. © 2012 Elsevier B.V.
title A late Paleozoic fossil forest from the southern Andes, Argentina
title_short A late Paleozoic fossil forest from the southern Andes, Argentina
title_full A late Paleozoic fossil forest from the southern Andes, Argentina
title_fullStr A late Paleozoic fossil forest from the southern Andes, Argentina
title_full_unstemmed A late Paleozoic fossil forest from the southern Andes, Argentina
title_sort late paleozoic fossil forest from the southern andes, argentina
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00310182_v333-334_n_p131_Cesari
http://hdl.handle.net/20.500.12110/paper_00310182_v333-334_n_p131_Cesari
_version_ 1768545774667300864

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