Tetrapod footprints from the Triassic of Patagonia: Reappraisal of the evidence

To date, the only known Triassic tetrapod footprints in Patagonia are those from the Los Menucos Basin, Río Negro province. The footprints occur at several levels in the Vera Formation in finegrained tuffaceous sandstones interbedded with tuffaceous mudstones that contain a rich "Dicroidium-typ...

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Detalles Bibliográficos
Publicado:	2006
Materias:	Argentina Late Triassic Patagonia Tetrapod footprints Therapsids fauna footprint mudstone sandstone tetrapod Triassic Los Menucos Rio Negro [Argentina] South America Dicroidium Dinosauria Tetrapoda Therapsida
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v43_n1_p55_Domnanovich http://hdl.handle.net/20.500.12110/paper_00027014_v43_n1_p55_Domnanovich
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00027014_v43_n1_p55_Domnanovich
record_format	dspace
spelling	paper:paper_00027014_v43_n1_p55_Domnanovich2023-06-08T14:22:11Z Tetrapod footprints from the Triassic of Patagonia: Reappraisal of the evidence Argentina Late Triassic Patagonia Tetrapod footprints Therapsids fauna footprint mudstone sandstone tetrapod Triassic Argentina Los Menucos Patagonia Rio Negro [Argentina] South America Dicroidium Dinosauria Tetrapoda Therapsida To date, the only known Triassic tetrapod footprints in Patagonia are those from the Los Menucos Basin, Río Negro province. The footprints occur at several levels in the Vera Formation in finegrained tuffaceous sandstones interbedded with tuffaceous mudstones that contain a rich "Dicroidium-type Flora". A revision of the original material described by Casamiquela and study of undescribed specimen from the same locality are presented herein. Previous assumptions about the large number of tetrapod groups represented by the footprint assemblage are not corroborated by the available evidence. However, this new analysis supports former propositions about the relative abundance and high diversity of small therapsids, probably theriodonts. This footprint assemblage suggests a unique Late Triassic tetrapod fauna in northern Patagonia, in which archosaurs (basal archosaurs and dinosaurs) were not the dominant component as in most known Late Triassic Gondwanan tetrapod faunas. This unusual situation might be either the result of a taphonomic bias or the record of an endemic fauna actually dominated by therapsid taxa. © Asociación Paleontológica Argentina. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v43_n1_p55_Domnanovich http://hdl.handle.net/20.500.12110/paper_00027014_v43_n1_p55_Domnanovich
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 Late Triassic Patagonia Tetrapod footprints Therapsids fauna footprint mudstone sandstone tetrapod Triassic Argentina Los Menucos Patagonia Rio Negro [Argentina] South America Dicroidium Dinosauria Tetrapoda Therapsida
spellingShingle	Argentina Late Triassic Patagonia Tetrapod footprints Therapsids fauna footprint mudstone sandstone tetrapod Triassic Argentina Los Menucos Patagonia Rio Negro [Argentina] South America Dicroidium Dinosauria Tetrapoda Therapsida Tetrapod footprints from the Triassic of Patagonia: Reappraisal of the evidence
topic_facet	Argentina Late Triassic Patagonia Tetrapod footprints Therapsids fauna footprint mudstone sandstone tetrapod Triassic Argentina Los Menucos Patagonia Rio Negro [Argentina] South America Dicroidium Dinosauria Tetrapoda Therapsida
description	To date, the only known Triassic tetrapod footprints in Patagonia are those from the Los Menucos Basin, Río Negro province. The footprints occur at several levels in the Vera Formation in finegrained tuffaceous sandstones interbedded with tuffaceous mudstones that contain a rich "Dicroidium-type Flora". A revision of the original material described by Casamiquela and study of undescribed specimen from the same locality are presented herein. Previous assumptions about the large number of tetrapod groups represented by the footprint assemblage are not corroborated by the available evidence. However, this new analysis supports former propositions about the relative abundance and high diversity of small therapsids, probably theriodonts. This footprint assemblage suggests a unique Late Triassic tetrapod fauna in northern Patagonia, in which archosaurs (basal archosaurs and dinosaurs) were not the dominant component as in most known Late Triassic Gondwanan tetrapod faunas. This unusual situation might be either the result of a taphonomic bias or the record of an endemic fauna actually dominated by therapsid taxa. © Asociación Paleontológica Argentina.
title	Tetrapod footprints from the Triassic of Patagonia: Reappraisal of the evidence
title_short	Tetrapod footprints from the Triassic of Patagonia: Reappraisal of the evidence
title_full	Tetrapod footprints from the Triassic of Patagonia: Reappraisal of the evidence
title_fullStr	Tetrapod footprints from the Triassic of Patagonia: Reappraisal of the evidence
title_full_unstemmed	Tetrapod footprints from the Triassic of Patagonia: Reappraisal of the evidence
title_sort	tetrapod footprints from the triassic of patagonia: reappraisal of the evidence
publishDate	2006
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v43_n1_p55_Domnanovich http://hdl.handle.net/20.500.12110/paper_00027014_v43_n1_p55_Domnanovich
_version_	1768543445070118912

Tetrapod footprints from the Triassic of Patagonia: Reappraisal of the evidence

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