On the Supposed Presence of Miocene Tayassuidae and Dromomerycinae (Mammalia, Cetartiodactyla) in South America

The earliest record of North American mammals in South America is significant for constraining the timing of intercontinental faunal interchange. At present, the oldest securely dated remains of a North American terrestrial mammal in South America pertain to a late Miocene procyonid; a few other Nor...

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Autores principales:	Gasparini, Germán Mariano, Parisi Dutra, Rodrigo, Perini, Fernando A., Croft, Darin A., Cozzuol, Mario Alberto, Velloso Missagia, Rafaela, Lucas, Spencer G.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2021
Materias:	Paleontología Paleontology Quaternary Outcrop Geography Mammal Late miocene Provenance Tayassu pecari Amazon rainforest Pleistocene
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/125197
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-125197
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Paleontología Paleontology Quaternary Outcrop Geography Mammal Late miocene Provenance Tayassu pecari Amazon rainforest Pleistocene
spellingShingle	Paleontología Paleontology Quaternary Outcrop Geography Mammal Late miocene Provenance Tayassu pecari Amazon rainforest Pleistocene Gasparini, Germán Mariano Parisi Dutra, Rodrigo Perini, Fernando A. Croft, Darin A. Cozzuol, Mario Alberto Velloso Missagia, Rafaela Lucas, Spencer G. On the Supposed Presence of Miocene Tayassuidae and Dromomerycinae (Mammalia, Cetartiodactyla) in South America
topic_facet	Paleontología Paleontology Quaternary Outcrop Geography Mammal Late miocene Provenance Tayassu pecari Amazon rainforest Pleistocene
description	The earliest record of North American mammals in South America is significant for constraining the timing of intercontinental faunal interchange. At present, the oldest securely dated remains of a North American terrestrial mammal in South America pertain to a late Miocene procyonid; a few other North American mammal groups are present in late Miocene and early Pliocene outcrops in South America, but most are not recorded until the late Pliocene or Pleistocene, after the complete emergence of the Panamanian Isthmus. This long-established pattern has recently been called into question by reports of a proboscidean, two tayassuids, and a dromomerycine cervoid in supposed late Miocene deposits of Peruvian Amazon. In this contribution, we analyze the taxonomic identities and stratigraphic provenances of the tayassuid and dromomerycine fossils in detail. We conclude that these specimens are not distinguishable from modern tayassuids (Tayassu pecari and Dicotyles tajacu) and cervids, and that previous taxonomic identifications are based on misinterpretation of characters or inadequate specimens. In addition, there is insufficient evidence to support a late Miocene age for these terrestrial cetartiodactyl fossils; the stratigraphic provenance of the specimens is highly dubious, and the fossils are likely Quaternary in age.
format	Articulo Articulo
author	Gasparini, Germán Mariano Parisi Dutra, Rodrigo Perini, Fernando A. Croft, Darin A. Cozzuol, Mario Alberto Velloso Missagia, Rafaela Lucas, Spencer G.
author_facet	Gasparini, Germán Mariano Parisi Dutra, Rodrigo Perini, Fernando A. Croft, Darin A. Cozzuol, Mario Alberto Velloso Missagia, Rafaela Lucas, Spencer G.
author_sort	Gasparini, Germán Mariano
title	On the Supposed Presence of Miocene Tayassuidae and Dromomerycinae (Mammalia, Cetartiodactyla) in South America
title_short	On the Supposed Presence of Miocene Tayassuidae and Dromomerycinae (Mammalia, Cetartiodactyla) in South America
title_full	On the Supposed Presence of Miocene Tayassuidae and Dromomerycinae (Mammalia, Cetartiodactyla) in South America
title_fullStr	On the Supposed Presence of Miocene Tayassuidae and Dromomerycinae (Mammalia, Cetartiodactyla) in South America
title_full_unstemmed	On the Supposed Presence of Miocene Tayassuidae and Dromomerycinae (Mammalia, Cetartiodactyla) in South America
title_sort	on the supposed presence of miocene tayassuidae and dromomerycinae (mammalia, cetartiodactyla) in south america
publishDate	2021
url	http://sedici.unlp.edu.ar/handle/10915/125197
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On the Supposed Presence of Miocene Tayassuidae and Dromomerycinae (Mammalia, Cetartiodactyla) in South America

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